JP6497811B2 - Information processing system, information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing system, an information processing apparatus, an information processing method, and a program.

  In GIS (Geographic Information System), information associated with each position on the map is displayed in a superimposed manner on the map. For example, various types of information are managed in units of layers, and when necessary layers are displayed, the information on the layers is displayed so as to overlap the map (for example, Non-Patent Document 1).

National Land Information Web Mapping System (Ministry of Land, Infrastructure, Transport and Tourism, National Land Policy Bureau, National Land Information Division) http://nrb-www.mlit.go.jp/webmapc/mapmain.html

  In the GIS described above, when the layer data to be displayed on the map increases, it is necessary to obtain a large amount of data online, so the display speed of the data may be reduced and usability may be impaired.

  The present invention has been made in view of the above points, and an object thereof is to provide an information processing system, an information processing apparatus, an information processing method, and a program that improve the display speed of data displayed on a map.

  SUMMARY An advantage of some aspects of the invention is that a display information acquisition unit in which an information processing apparatus acquires display information regarding a display area of a map displayed by an information providing apparatus. And a first data acquisition unit that acquires data of a layer in the first region corresponding to the display information acquired by the display information acquisition unit from an external database, and a layer data acquired by the first data acquisition unit A second data acquisition unit that acquires data of a layer other than the data acquired by the first data acquisition unit from an external database; and a storage unit that stores an image based on the layer data acquired by the second data acquisition unit; An image output unit that outputs an image based on the layer data of the first region acquired by the first data acquisition unit to the information providing device, and the information providing device Includes a display control unit that displays the layer image output from the image output unit on a map, and the image output unit changes the display information when the display information acquisition unit changes. The information processing system outputs an image based on the layer data acquired by the second data acquisition unit stored in the storage unit.

  In addition, according to one aspect of the present invention, in the information processing system, the second data acquisition unit includes a second region that does not include the first region based on layer data acquired by the first data acquisition unit. Layer data is acquired as layer data other than the data acquired by the first data acquisition unit.

  In addition, according to one aspect of the present invention, in the information processing system, the second data acquisition unit includes a layer acquired by the first data acquisition unit based on layer data acquired by the first data acquisition unit, and Is acquired as data of layers other than the data acquired by the first data acquisition unit.

  In addition, according to one aspect of the present invention, in the information processing system, the second data acquisition unit is based on layer data acquired by the first data acquisition unit and a degree of association between layers set in advance. Then, the data of the other layer related to the data of the layer acquired by the first data acquisition unit is acquired.

  Further, according to one aspect of the present invention, in the information processing system, the second data acquisition unit may be configured such that the value included in the layer data acquired by the first data acquisition unit exceeds a predetermined threshold value. Data of a layer other than the data acquired by one data acquisition unit is acquired.

  In addition, according to one aspect of the present invention, in the information processing system, the second data acquisition unit includes data of a layer in a second area that does not include the first area, based on map information corresponding to the first area. To get.

  Further, according to one aspect of the present invention, in the information processing system, the second data acquisition unit is configured to acquire the data acquired by the first data acquisition unit based on the history information of the layer acquired by the first data acquisition unit. Get data of other layers.

  In one embodiment of the present invention, in the information processing system, the display information includes information indicating a position, a range, or a magnification of a map displayed by the information providing apparatus.

  According to another aspect of the present invention, a display information acquisition unit that acquires display information related to a display region of a map displayed by the information providing device, and a layer of a first region corresponding to the display information acquired by the display information acquisition unit A first data acquisition unit that acquires the data from the external database and a layer data other than the data acquired by the first data acquisition unit based on the layer data acquired by the first data acquisition unit from the external database A second data acquisition unit, a storage unit for storing an image based on the layer data acquired by the second data acquisition unit, and an image based on the layer data of the first region acquired by the first data acquisition unit An image output unit that outputs the image to the information providing device that displays the image superimposed on a map, the image output unit acquired by the display information acquisition unit If the serial display information is changed, the storage unit outputs the image based on data of the second layer that data acquisition unit has acquired to be stored in accordance with the change, an information processing apparatus.

  One embodiment of the present invention corresponds to the display information acquisition step in which the information processing apparatus acquires display information related to the display area of the map displayed by the information providing apparatus, and the display information acquired in the display information acquisition step. Based on the first data acquisition step of acquiring the layer data of the first region from the external database and the layer data acquired in the first data acquisition step, the layer other than the data acquired in the first data acquisition step A second data acquisition step for acquiring data from an external database, a storage step for storing an image based on the layer data acquired in the second data acquisition step in a storage unit, and the first data acquisition step acquired in the first data acquisition step An image output step of outputting an image based on the layer data of one region to the information providing device; And the information providing apparatus includes a display control step for displaying the layer image output in the image output step so as to be superimposed on a map, and the display acquired in the display information acquisition step in the image output step When information changes, it is an information processing method which outputs the image based on the data of the layer acquired by the said 2nd data acquisition step which the said memory | storage part memorize | stores according to the said change.

  According to another aspect of the present invention, there is provided a display information acquisition step for acquiring display information relating to a display area of a map displayed by the information providing device, and a layer of the first area corresponding to the display information acquired in the display information acquisition step Based on the first data acquisition step of acquiring the data from the external database and the layer data acquired in the first data acquisition step, the data of the layers other than the data acquired in the first data acquisition step is retrieved from the external database. A second data acquisition step to be acquired; a storage step for storing an image based on the layer data acquired in the second data acquisition step in a storage unit; and a layer in the first area acquired in the first data acquisition step. Outputting an image based on the data to the information providing apparatus for displaying the image on a map; When the display information acquired in the image output step and the display information acquisition step changes, an image based on the layer data acquired in the second data acquisition step stored in the storage unit according to the change is output. And a second image output step for causing the computer to execute the second image output step.

  ADVANTAGE OF THE INVENTION According to this invention, the display speed of the data displayed on a map can be improved.

Explanatory drawing explaining the outline | summary of GIS. The figure which shows an example of the layer selection screen which concerns on 1st Embodiment. Schematic which shows an example of the information processing system which concerns on 1st Embodiment. 1 is a block diagram showing an example of the configuration of an information processing apparatus according to a first embodiment. The sequence diagram which shows an example of the map data display process which concerns on 1st Embodiment. The block diagram which shows an example of a structure of the information processing apparatus which concerns on 2nd Embodiment. The block diagram which shows an example of a structure of the information processing apparatus which concerns on 3rd Embodiment. 10 is a flowchart showing a first example of prefetch processing according to the third embodiment. 10 is a flowchart showing a second example of prefetch processing according to the third embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
First, an outline of a GIS (Geographic Information System) related to the present embodiment will be described. FIG. 1 is an explanatory diagram for explaining the outline of the GIS.

  GIS is a system for visualizing and controlling geospatial information. Specifically, the GIS manages the data associated with each position on the map in units of information groups that can be superimposed as layers, and images (icons, photos, Graphics, characters, etc.) are superimposed on the map. For example, as shown in the figure, in GIS, a map is layered and data having position information corresponding to the map area is transferred from an external database to each layer (layer A, layer B, layer C,...). The image based on the acquired data of each layer is superimposed and displayed on the map that is the base layer. As a result, it is possible to visually grasp what is on the map and the situation of each position on the map.

  The data acquired for each layer may be any information as long as the information includes position information. For example, the data acquired for each layer may be an object whose position is fixed, such as a store, a track, a road, a park, or a building, or a sensor (temperature sensor, wind sensor) actually installed at each point. Further, it may be data representing the detection result of a rainfall sensor, a river water level sensor, a flow sensor, or the like, or an object that visualizes the data. In addition, the data acquired for each layer may be a hazard map such as a flood or landslide disaster, a photograph or video of each point, and the like.

  In GIS, various data are displayed overlaid on the map, so operability such as how to select the necessary data and ease of visualization when multiple pieces of information are visualized on a single map. Is important. If the data to be displayed increases and the operability when displaying and using the data on a map is poor, or the displayed data is difficult to see, the practicality in business use is impaired and GIS is incorporated. It becomes difficult to proceed with the introduction of a new system.

  For example, if there is a lot of data for the layers to be selected in the past, and they are expressed in text, it is difficult to imagine what is specifically displayed with the text alone, so it is difficult to find the data you want to display. . Also, if many layers are displayed in an overlapping manner, it is difficult to know what data is displayed, and even if an unnecessary layer is removed from the display, it is difficult to understand in which text the layer is expressed. In the case of a check box type data selection UI (User Interface) expressed in a hierarchical structure of a directory, it is necessary to repeatedly dig down the directory and visually check a large number of candidates, and search for the target data. Is difficult. Further, when combining a plurality of data, it takes more time to find the data. In this way, in other words, conventionally, it has been troublesome to select the displayed layer. Conventionally, the data display image (how many, how many statuses are present, whether the data is distributed in the currently displayed area, etc.) is the data for that area in layers. I don't know until I get it, so it takes time even if I just want to check it.

  Therefore, the information processing system according to the present embodiment displays each selectable layer individually on the map so that the data of the layer to be selected can be visually recognized. Thereby, in the information processing system according to the present embodiment, the data is displayed on the map in an easy-to-understand manner, so that it is easy to find the data to be displayed.

(Example of layer selection screen)
FIG. 2 is a diagram illustrating an example of a layer selection screen according to the present embodiment. A reference symbol G10 shown in the figure indicates the entire layer selection screen and is described as a layer selection screen G10. In the layer selection screen G10, thumbnail images of layers that can be selected as objects to be displayed are displayed side by side in the area indicated by reference numeral G11. The thumbnail image of each layer is an image in which an image based on the data of each layer is superimposed on the map. The map is a thumbnail image of a map of the area displayed on the information providing apparatus 10, and is arranged in the lowest layer as a base layer. Here, thumbnail images of four layers, layer A, layer B, layer C, and layer D, are displayed side by side, and the thumbnail image of each layer is superimposed on the map of the same area based on the data of each layer The resulting image. For example, when the map area displayed in the information providing apparatus 10 is changed, the map area of the thumbnail image of the four layers, layer A, layer B, layer C, and layer D, and the data of each layer to be superimposed The image based on is also changed in conjunction.

  For example, the layer selection screen G10 is displayed on a display equipped with a touch panel that receives an operation input on the display screen. A user (also referred to as an operator) can select a layer to be displayed by touching the thumbnail image of the layer to be displayed from among the thumbnail images of the layer displayed side by side. . A plurality of layers can be selected, but the number of selections may be limited.

  In the layer selection screen G10, various operation buttons are displayed in the area indicated by the symbol G12. The type selection button B1 (“type selection”) is an operation button for selecting the type of data. The data type is, for example, a disaster type such as flood, fire, earth and sand disaster. When the operator performs a touch operation on the type selection button B1, a menu screen for selecting a disaster type is displayed in the area indicated by reference numeral G11. When the operator performs an operation of selecting a target disaster from the disaster types displayed on the menu screen, a thumbnail image of the layer related to the selected disaster is displayed in the area indicated by reference numeral G11 as shown. The In the illustrated example, layer A is a water level sensor layer, layer B is a rain mesh information layer, layer C is a flood hazard map layer, and layer C is a local photo layer.

  The composite image button B2 (“composite image”) is an operation button for temporarily displaying a composite image of the selected layer. When the operator performs a touch operation on the composite image button B2, a composite image when the layer selected at that time is superimposed on the map is displayed in an area indicated by reference numeral G11.

  The composite / transfer button B3 (“composite / transfer”) is an operation button for actually generating and transferring a composite image when the displayed composite image is acceptable. When the operator performs a touch operation on the composite / transfer button B3, the composite of the layer image superimposed on the map in the displayed composite image and the map image (base layer image) are combined. An image is generated and transferred. The transfer destination is a predetermined display device (for example, a projector) of the information processing system, and is different from the operator display on which the layer selection screen G10 shown in this figure is displayed. The transfer destination and the operator display may be the same display device.

  The return button B4 ("Return") is an operation button for returning the screen displayed in the area indicated by the reference sign G11 to the screen displayed immediately before. For example, when a menu screen for selecting a disaster type or a composite image is displayed in the area indicated by reference numeral G11, when a touch operation is performed on the return button B4, thumbnails of layers that can be selected as display targets are displayed. The screen switches to a screen where images are displayed side by side.

  When there are many selectable layers, thumbnail images of selectable layers are displayed divided into a plurality of pages. The page advance button B5 and the page return button B6 are operation buttons for performing page advance and return, respectively. In the page label LB1, the page being displayed is displayed in the area indicated by reference numeral G11. By having a page switching function in this way, a large amount of information can be confirmed as a selection target. Note that only the designated layer may be displayed on the full screen display (for example, the entire area indicated by the reference sign G11).

  Here, an example in which the layer selection screen G10 is displayed on a display equipped with a touch panel has been described with reference to FIG. 2, but the display on which the layer selection screen G10 is displayed includes a touch panel. Each layer and each operation button may be operated by an operator operating a mouse or the like.

(Configuration of information processing system)
Hereinafter, the configuration of the information processing system according to the present embodiment will be described.
FIG. 3 is a schematic diagram illustrating an example of the information processing system 1 according to the present embodiment. For example, the information processing system 1 is a disaster countermeasure support system that supports damage prediction when a disaster occurs and decision making in a disaster countermeasure plan. In the illustrated example, the information processing system 1 includes an information providing device 10, an information processing device 20, and an external database 30. The information providing apparatus 10, the information processing apparatus 20, and the external database 30 are configured to be able to communicate with each other via a communication network NW.

  The communication network NW is an information communication network configured by the Internet, a WAN (Wide Area Network), a LAN (Local Area Network), and the like. The WAN includes, for example, a mobile phone network, a PHS (Personal Handy-phone System) network, a PSTN (Public Switched Telephone Network), a dedicated communication line network, a VPN (Virtual Private Network), and the like.

  The information providing apparatus 10 and the information processing apparatus 20 link various functions of each apparatus and display various data on a map using GIS. The information providing apparatus 10 has a map display function as an existing GIS, for example, and projects a composite image in which various types of data are superimposed on the map onto the digital sheet 12 via the projector 11. The digital sheet 12 has a role of a screen for projecting an image projected from the projector 11 and accepts input of disaster countermeasure information by operating the digital pen 13 on the projected map. The input information received by the digital sheet 12 is sent to the information providing apparatus 10.

  The information processing apparatus 20 acquires map data of a map display area displayed on the information providing apparatus 10 and data corresponding to the map display area from the external database 30 for each layer. The external database 30 includes map data, data indicating values based on detection results of sensors actually installed at each point, images including objects that visualize the data, hazard maps such as floods and landslides, It is a database that provides photos and videos in layers. In this figure, one database is shown as the external database 30, but a plurality of databases may be provided according to various data. The external database 30 also includes a storage device that stores various data, and a communication device that transmits the various data stored in the storage device to the information processing device 20 in units of layers in response to requests from the information processing device 20. It is comprised including.

  In addition, when acquiring and using map data from the external database 30, the information processing apparatus 20 uses an open / free map database to reduce license costs or use a map suitable for the application. Can do. In addition, a detailed map is usually used, and when the response is slow (the network load is high), it may be switched to a lightweight map (rough resolution map).

  Further, the information processing apparatus 20 causes thumbnail images based on the acquired data for each layer to be individually superimposed on the map and displayed on the sub display 21 (see the layer selection screen G10 in FIG. 2). The sub-display 21 is a display unit for an operator, such as a liquid crystal display or an organic EL (Electroluminescence) display. In addition, the sub display 21 is equipped with a touch panel that receives an operation input on the display screen, for example.

  Further, the information processing apparatus 20 generates a composite image in which the image of the layer selected by the operator on the layer selection screen G <b> 10 displayed on the sub display 21 is superimposed on the map, and transmits the composite image to the information providing apparatus 10. The information providing apparatus 10 acquires the composite image transmitted from the information processing apparatus 20. Thereby, the information providing apparatus 10 can project the composite image in which the image of the layer selected by the operator is mapped onto the digital sheet 12 via the projector 11.

(Configuration of information processing apparatus 20)
Next, the configuration of the information processing apparatus 20 will be described in detail with reference to FIG.
FIG. 4 is a block diagram illustrating an example of the configuration of the information processing apparatus 20 according to the present embodiment.
The information processing apparatus 20 shown in the figure includes a display information acquisition unit 210, a data acquisition unit 220, a layer image generation unit 230, a storage unit 240, a display control unit 250 (first display control unit), and a selection unit 260. , And an image output unit 270.

  The display information acquisition unit 210 acquires display information related to the display area of the map displayed by the information providing apparatus 10. Here, the display information includes position information (latitude and longitude information) indicating the position of the map displayed by the information providing apparatus 10. The display information may include information indicating the range or magnification of the map displayed by the information providing apparatus 10. The display information acquisition unit 210 outputs the acquired display information to the data acquisition unit 220.

  The data acquisition unit 220 acquires data of each layer from the external database 30. For example, when the data acquisition unit 220 acquires the display information output from the display information acquisition unit 210, the data corresponding to the map area corresponding to the acquired display information (map data and data to be superimposed on the map) is displayed for each layer. To get to. Note that the data acquisition unit 220 may acquire only related layer data according to the data type (for example, disaster type) selected by the operator. For example, the association between the data type and the layer to be acquired is set in advance and stored in the storage unit 240. Then, the data acquisition unit 220 outputs the acquired data of each layer to the layer image generation unit 230.

  The layer image generation unit 230 generates an image of each layer based on the data of each layer acquired by the data acquisition unit 220. Then, the layer image generation unit 230 stores the generated image of each layer in the storage unit 240. Here, the image of each layer is a map image and an image (icon, photograph, figure, character, etc.) to be displayed superimposed on the map. For example, when generating an image of a layer to be displayed on a map, the layer image generation unit 230 visually determines the data value by converting the layer data into a color or icon corresponding to the data value. Visualize as you can. When the data acquired from the external database 30 by the data acquisition unit 220 is already image data that can be displayed on the map, the layer image generation unit 230 stores the acquired data in the storage unit 240 as it is. Let In addition, the layer image generation unit 230 generates a thumbnail image of the generated layer image and causes the storage unit 240 to store the thumbnail image. A thumbnail image is an image obtained by reducing the size of the original image.

  The storage unit 240 includes an HDD (Hard Disc Drive), a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), a RAM (Random Memory Program, etc.). Memorize data, etc. For example, the storage unit 240 stores the layer image and the thumbnail image generated by the layer image generation unit 230. In addition, the storage unit 240 stores history information such as a layer selected by the operator, and setting information such as importance and relevance of each layer. For example, type related information in which related layers are associated as a set for each data type is stored.

  The display control unit 250 causes the thumbnail images of the respective layers stored in the storage unit 240 to be individually displayed on the sub display 21 while being superimposed on the map. In other words, the display control unit 250 displays the thumbnail images of the respective layers based on the data of the respective layers acquired by the data acquisition unit 220 on the sub-display 21 while being individually superimposed on the map.

  For example, the display control unit 250 individually converts the thumbnail images of each layer of the portion corresponding to the display information acquired by the display information acquisition unit 210 (the display area of the map displayed on the information providing apparatus 10) into the map. Overlapping display. Specifically, the display control unit 250 individually displays the thumbnail images of the respective layers corresponding to the position information, the range, or the magnification included in the display information on the map. In addition, when the display information changes, the display control unit 250 individually displays the thumbnail images of the respective layers changed according to the change so as to be superimposed on the map. That is, when the display area of the map displayed on the information providing apparatus 10 is changed, the display control unit 250 changes and displays the thumbnail image of each layer in the changed area.

In this way, the map serving as the base layer is linked to the map of the existing GIS (information providing apparatus 10), so that the operator can confirm necessary information while performing operations on the existing GIS. When the map display position is moved or the scale is changed in the existing GIS, the display position or scale of each thumbnail map on the sub-display 21 is changed in conjunction with the movement.

  In addition, when a data type (for example, disaster type) is selected, the display control unit 250 refers to the type-related information stored in the storage unit 240 and associates the layer associated with the selected data type. On the basis of the set, thumbnail images for one set of layers necessary for the type of data (for example, flood) are superimposed and displayed on the map. Note that the display control unit 250 may learn a layer that has been displayed in the past, and display it as a combination of data of related layers in subsequent displays.

  The selection unit 260 selects a layer to be displayed based on the operator's operation input on the layer selection screen G10 (FIG. 2) displayed on the sub display 21. Then, information indicating the selected layer is output to the display control unit 250 and the image output unit 270. When the display control unit 250 acquires information indicating the selected layer from the selection unit 260, the display control unit 250 displays the selection. Further, the image output unit 270 uses the information indicating the selected layer acquired from the selection unit 260 when performing layer synthesis.

  Note that the selection unit 260 may select a portion in the image of each layer based on an operation input by the operator on the layer selection screen G10 (FIG. 2) displayed on the sub-display 21. For example, the selection unit 260 may select a selection range input by an operator or a target (object) input by an operator as the portion in the thumbnail image of each layer.

  As a selection method, for example, when the size of a circle (or a square frame) indicating an area is changed (enlarged or reduced) by a touch operation or the like on the screen of the composite image, the selection unit 260 is included in the circle. These data may be selected. In addition, among the plurality of water level sensors, the selection unit 260 may select only the point that has reached the inundation risk area, and the selection unit 260 may select only the point that has reached the inundation risk area. The unit 260 may select automatically. Further, the operator may manually select a necessary range (such as a radius of 1 km) from the water level sensor, and the selection unit 260 may select only the range.

  As a result, the information processing apparatus 20 can display only a necessary portion of the layer image on the map, instead of overlaying the entire layer image on the map. In general, in open data and dynamically changing data, it is rare that all the information in the range displayed in the layer is necessary, so that only a portion necessary for analysis can be selected. For example, the operator selects the data display range and only the portion is combined, so that the data can be prevented from being displayed in an unnecessary place, and the data amount can be reduced.

  Further, the selection unit 260 may cause the storage unit 240 to store history information of a portion selected in the thumbnail image of the layer. Then, the selection unit 260 may select a portion in the thumbnail image of the layer based on the history information stored in the storage unit 240.

  The image output unit 270 combines the image of the selected layer among the thumbnail images of each layer displayed on the sub-display 21 with the base layer of the map and outputs it to the information providing apparatus 10. For example, the image output unit 270 includes an extraction unit 271 and a synthesis unit 272.

  The extraction unit 271 extracts the image of the layer selected by the selection unit 260 (for example, the entire image displayed as a thumbnail image in each layer) and reads it from the storage unit 240. Further, when the selection unit 260 selects a portion in the thumbnail image of the layer, the extraction unit 271 extracts an image of the selected portion in the layer and reads it from the storage unit 240. In addition, the extraction unit 271 extracts a map image (an image corresponding to a display area) serving as a base layer and reads it from the storage unit 240.

  The combining unit 272 generates a combined image by combining the layer images including the map image extracted by the extracting unit, and outputs (transmits) the generated combined image to the information providing apparatus 10.

  The information providing apparatus 10 includes a map display function unit 110 that displays a GIS map via a projector 11. Here, the map display function unit 110 functions as a display control unit (second display control unit) that acquires the composite image transmitted from the information processing apparatus 20 and displays the acquired composite image via the projector 11. .

  In this way, the information processing apparatus 20 synthesizes data of a plurality of layers displayed as thumbnail images and generates a composite image as one layer. It is only necessary to have a function of displaying. For example, the information processing device 20 acquires data and combines layers as an intermediary with the information providing device 10 (existing GIS) in order to meet the needs to link data and map information on the Internet. The modification and processing load in the information providing apparatus 10 (existing GIS) can be suppressed.

  In the above description, a configuration example in which layers are combined in the information processing device 20 in consideration of suppression of modification of the information providing device 10 and processing load is described. The image may be transmitted to the information providing apparatus 10 and the information providing apparatus 10 may combine the layers. The information processing apparatus 20 may generate a composite image obtained by combining layers other than the map and transmit the composite image to the information providing apparatus 10. In this case, the information providing apparatus 10 generates a composite image in which the acquired composite image layer is superimposed on the map layer.

(Operation of map data display processing)
Next, with reference to FIG. 5, the operation of the map data display process for displaying various data on the map in the information processing system 1 will be described.
FIG. 5 is a sequence diagram showing an example of map data display processing according to the present embodiment.

  First, the information providing apparatus 10 displays a map of an area where a disaster has occurred (want to collect information) on the digital sheet 12 via the projector 11 in accordance with the operation of the operator (step S101). Next, when the operator clicks on the information collection button by operating the digital pen 13 on the digital sheet 12 (step S301), the information providing apparatus 10 displays display information on the display area of the displayed map ( (Position information, information indicating range or magnification) is transmitted to the information processing apparatus 20 (step S102).

  When the information processing apparatus 20 acquires the display information transmitted from the information providing apparatus 10, the information processing apparatus 20 displays a menu screen for selecting a disaster type (water damage, fire, earth and sand disaster, etc.) on the sub display 21 (step S201). The operator selects a disaster type on the menu screen displayed on the sub display 21 (step S302). Here, it is assumed that the operator selects “water damage” on the menu screen.

  When the operator selects “water damage” as the disaster type, the information processing apparatus 20 stores water-related data (water level sensor, rainfall mesh information, hazard map, local photographs, etc.) previously associated with “water damage”. Then, it is collected and acquired for each layer from the external database 30 (step S202). Then, the information processing apparatus 20 displays thumbnail images based on the acquired flood-related data individually on the map for each layer and displays them on the sub display 21 (see step S203, the layer selection screen G10 in FIG. 2). The map of each layer at this time is linked to the display area of the map displayed by the information providing apparatus 10. When the collected data does not match the position and scale of the map displayed by the information providing apparatus 10, the information processing apparatus 20 appropriately changes the position and scale and displays the data.

  Next, the operator selects a thumbnail image of a layer to be combined (that is, a layer desired to be displayed on the information providing apparatus 10) on the layer selection screen G10, and performs a touch operation on the combined image button B2 (step S303). Thereby, the information processing apparatus 20 generates a composite image when the selected layer is superimposed on the map, and displays the composite image in the region indicated by the code G11 of the layer selection screen G10 (step S204).

  Further, the operator performs an operation (such as an operation of enlarging or reducing a circle indicating an area) for selecting a portion in the thumbnail image of the layer on the layer selection screen G10, and selects a range (area) of data to be combined ( Step S304). As a result, the information processing apparatus 20 generates a composite image when a thumbnail image including only data within the selected range is superimposed on the map, and displays it in the area indicated by the code G11 of the layer selection screen G10. It is displayed (step S205).

  Next, the operator touches the composition / transfer button B3 while confirming the composition image displayed in step S205 (step S305). As a result, the information processing apparatus 20 generates a composite image in which the image of the selected layer or the image of the selected portion in the layer is superimposed on the map (step S206), and the generated composite image is the information providing apparatus 10. (Step S207).

  The information providing apparatus 10 acquires the composite image transmitted from the information processing apparatus 20, and displays the acquired composite image on the digital sheet 12 via the projector 11 (step S103).

  As described above, the information processing system 1 according to the present embodiment includes the information providing apparatus 10 and the information processing apparatus 20. The information processing apparatus 20 acquires the data of each layer from the external database 30 and arranges the images of each layer based on the acquired data of each layer individually on the map and arranges them on the sub display 21 (an example of a display unit). Display. Further, the information processing apparatus 20 outputs the image of the selected layer among the images of each layer displayed on the sub display 21 to the information providing apparatus 10. Then, the information providing apparatus 10 displays the layer image output from the information processing apparatus 20 so as to overlap the map. Thereby, the information processing system 1 can display the data to be displayed on the map so that the operator can easily select the data.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
In the present embodiment, an example will be described in which an image is converted so that an image of a layer displayed on a map is easily visible.

  The basic configuration of the information processing system 1A according to the present embodiment is the same as that of the information processing system 1 shown in FIG. 3, but a part of the configuration of the information processing apparatus 20 is different. FIG. 6 is a block diagram illustrating an example of the configuration of the information processing apparatus 20A according to the present embodiment. In FIG. 6, the components corresponding to those shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  The illustrated information processing apparatus 20A includes a display information acquisition unit 210, a data acquisition unit 220, a layer image generation unit 230A, a storage unit 240, a display control unit 250, a selection unit 260, and an image output unit 270. Consists of including. For example, when colors are overlapped or mixed in the composition of layers, it becomes difficult to see information on which layer, or it becomes difficult to see. Therefore, the layer image generation unit 230A adjusts the color of each layer so that the same color or similar colors do not overlap when the layers are combined, and generates an image of each layer. For example, the layer image generation unit 230 </ b> A includes a determination unit 231 and a conversion unit 232.

  The determination unit 231 determines whether or not the objects in the image overlap when at least two images of each layer based on the data of each layer acquired by the data acquisition unit 220 are overlapped. For example, the determination unit 231 determines whether or not objects overlap between layers based on the position and size of the object in the image of each layer. Note that the overlapping of objects is not limited to the case where all the objects overlap, but also includes the case where a part of the objects overlaps by a preset ratio or more.

  The conversion unit 232 converts an image for at least one of the images of each layer based on the determination result of the determination unit 231. For example, when the determination unit 231 determines that the objects overlap, the conversion unit 232 converts the color of the object determined to overlap for at least one of the images of each layer. That is, the conversion unit 232 changes the color of at least one object to a color different from or different from the color of the other object so that the colors of the objects of each layer determined to overlap do not become the same color or similar colors. Set to.

  Even when the objects in the image do not overlap when the images of at least two layers are overlapped, it is similarly difficult to see if the colors of the adjacent objects are the same or similar. Therefore, the determination unit 231 determines whether or not the colors in the predetermined image region are the same or similar when at least two images of each layer based on the data of each layer acquired by the data acquisition unit 220 are superimposed. It may be determined. In this case, when the determination unit 231 determines that the colors in the predetermined image area are the same or similar, the conversion unit 232 sets the color of the object in the image area for at least one of the images in each layer. Convert.

  In addition, when converting the color of the image of at least one layer, the conversion unit 232 combines a plurality of data values of the layer to be converted with a function, converts the value into a new value, and then converts it using a new color pattern. May be.

  Moreover, the conversion unit 232 may convert not only the color but also any one of the display modes such as the color, shape, size, etc., or a combination of a plurality of display modes. . In addition, the conversion unit 232 may change a display mode for converting a graphic in the image into a character for at least one of the images of each layer.

  For example, the conversion unit 232 may convert the color of a graphic represented by a square or a circle visualized based on the data of at least one layer into another color, or may convert the shape of the graphic into another color. You may convert into a shape and may reduce a magnitude | size. Further, the conversion unit 232 may convert the graphic into characters or a graph representing data. Specifically, when objects of the same color or similar colors overlap, the conversion unit 232 avoids expressing each object with a color and expresses at least one with a line (contour line), or at least One of them may be converted to be expressed as a bar graph. As an example, the conversion unit 232 has two types of data representations, such as a rain mesh information layer (color) and a flood hazard map (color), with a rainfall as a central point (which appears three-dimensionally), You may convert into the line surrounding the flood inundation area | region of the flood level calculated from the rainfall.

  In addition, the process by the determination part 231 and the conversion part 232 mentioned above is performed when the process by the determination part 231 and the conversion part 232 mentioned above produces | generates the synthesized image of FIG.5 S204, for example. Note that this may be performed when generating a thumbnail image based on the flood-related data in step S203 shown in FIG.

As described above, in the information processing apparatus 20 according to the present embodiment, the conversion unit 232 converts an image for at least one of the images of each layer based on the data of each layer acquired by the data acquisition unit 220. Then, the display control unit 250 displays the thumbnail image of the layer including the image converted by the conversion unit 232 on the map.
Thereby, the information processing apparatus 20 can improve the visibility of the image of each layer, when displaying the image of a several layer on a map. That is, the information processing apparatus 20 can improve the visibility of information displayed on the map.

  Note that the information processing apparatus 20 may change the display mode according to the user to be used, the purpose of use, the work type, and the like. For example, the information processing apparatus 20 may display the same information, such as for fire extinguishing or emergency use, depending on the application, or by changing the type or size of an object figure (such as an icon).

Further, the information processing apparatus 20 may set the order of layers to be superimposed on the map. For example, the image output unit 270 determines the overlapping order of the images of the selected layers among the images of the respective layers displayed on the sub display 21 based on the importance set in advance for each layer. Thereby, the information processing apparatus 20 can prevent information with high importance from being hidden by information of other layers, for example, by superimposing a layer with high importance on top.
Further, the information processing apparatus 20 may set the order of the layers to be superimposed on the map according to the display mode of each layer to be superimposed on the map. For example, the information processing apparatus 20 may superimpose a bar graph converted from the value of the rainfall sensor on the flood hazard map layer.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.
In the use of GIS, if a large amount of data is required and the number of layers to be superimposed on the map increases, the data acquired from the external database 30 may increase, resulting in a long waiting time for acquisition. Since it is necessary to acquire data from the external database 30 every time the display area changes due to movement of the map display area or enlargement / reduction operation, there is a concern that the response will deteriorate if it takes time each time. In addition, once the data that has been acquired and displayed has been viewed and hidden, if it is displayed again for confirmation, it may be necessary to acquire the data again, which may take time. As described above, when the processing load in the GIS is heavy and the data display speed is reduced, there is a concern that usability is impaired and the original work cannot be performed. Therefore, in the present embodiment, an example in which the display speed of data displayed on a map is improved will be described.

  The basic configuration of the information processing system 1B according to the present embodiment is the same as that of the information processing system 1 shown in FIG. 3, but a part of the configuration of the information processing apparatus 20 is different. FIG. 7 is a block diagram illustrating an example of the configuration of the information processing apparatus 20B according to the present embodiment. In FIG. 7, the components corresponding to those shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  The information processing apparatus 20B caches the layer data once acquired from the external database 30 in the storage unit 240 (stores it as cache data), and then accesses the external database 30 when the data becomes necessary next time. Without using cached data. Further, the information processing apparatus 20B prefetches (prefetchs) data of a layer predicted to be used from the external database 30 (stores it as prefetch data), and prepares for display. As a result, the information processing system 1B according to the present embodiment can improve the display speed of the data to be displayed on the map by using the cache data or the prefetch data.

  The illustrated information processing apparatus 20B includes a display information acquisition unit 210, a data acquisition unit 220B, a layer image generation unit 230, a storage unit 240, a display control unit 250, a selection unit 260, and an image output unit 270. Consists of including. The data acquisition unit 220B includes a first data acquisition unit 221 and a second data acquisition unit 222.

  The first data acquisition unit 221 acquires from the external database 30 the data of the first region layer corresponding to the display information acquired by the display information acquisition unit 210. The function of the first data acquisition unit 221 corresponds to the function of the data acquisition unit 220 in FIGS. 4 and 6. That is, the display control unit 250 displays the thumbnail images of the layers based on the layer data acquired by the first data acquisition unit 221 in a superimposed manner on the map (see the layer selection screen G10 in FIG. 2). The first area is, for example, an area corresponding to the display area of the map displayed on the information providing apparatus 10 and is an area equal to or larger than the map display area (an area slightly wider than the map display area). is there.

  Also, the image output unit 270 combines the images of the layers selected on the layer selection screen G10 out of the images based on the layer data of the first region acquired by the first data acquisition unit 221 to the information providing apparatus 10. Send. The information providing apparatus 10 acquires the transmitted composite image and displays the layer image superimposed on the map.

  The layer image and the thumbnail image based on the layer data acquired by the first data acquisition unit 221 are stored (stored) in the storage unit 240 as cache data. The first data acquisition unit 221 does not newly acquire the data from the external database 30 even when the data becomes necessary next time. In this case, the display control unit 250 and the image output unit 270 use cache data stored in the storage unit 240.

  On the other hand, the second data acquisition unit 222 acquires data of layers other than the data acquired by the first data acquisition unit 221. For example, the data of the layer other than the data acquired by the first data acquisition unit 221 is the data of the layer of the second area that does not include the first area. The data in the second area may be data in the second area in the same layer as the data layer acquired by the first data acquisition unit 221 or data in the second area in a different layer. The data of the layer other than the data acquired by the first data acquisition unit 221 may be data of another layer different from the layer acquired by the first data acquisition unit 221.

  Then, the layer image generation unit 230 generates an image (including a thumbnail image) based on the layer data acquired by the second data acquisition unit 222 and stores it in the storage unit 240 as prefetch data. The display control unit 250 and the image output unit 270 use the prefetch data when the display area of the map is changed to move to the area for displaying the prefetch data.

  For example, when the display information acquired by the display information acquisition unit 210 changes (that is, when the display area of the map changes), the display control unit 250 prefetch data (the first data stored in the storage unit 240 according to the change). 2) The layer selection screen G10 is displayed on the sub-display 21 using the thumbnail image based on the layer data acquired by the data acquisition unit. In addition, when the display information acquired by the display information acquisition unit 210 changes (that is, when the display area of the map changes), the image output unit 270 prefetch data (the first data stored in the storage unit 240 according to the change) 2) A composite image is generated using an image based on layer data acquired by the data acquisition unit and transmitted to the information providing apparatus 10.

Hereinafter, a specific example of data prefetched by the information processing apparatus 20 will be described.
(1) Example of Prefetching Other Relevant Layers The information processing apparatus 20 stores a degree of association between layers set in advance in the storage unit 240 and prefetches based on the degree of association between layers. . For example, layers such as a flood hazard map and a landslide hazard map are set as highly relevant layers in the water level sensor layer and the rainfall mesh information layer.

  For example, the second data acquisition unit 222 refers to the layer acquired by the first data acquisition unit based on the layer data acquired by the first data acquisition unit 221 and the degree of association between the layers set in advance. Get data of other different layers. Specifically, the second data acquisition unit 222 acquires data of another layer related to the layer data acquired by the first data acquisition unit 221.

  Further, the second data acquisition unit 222 relates to the layer data acquired by the first data acquisition unit 221 when the value included in the layer data acquired by the first data acquisition unit 221 exceeds a predetermined threshold. Data of other layers may be acquired. For example, when the value of the water level sensor layer or the rainfall mesh information layer (water level or rainfall) acquired by the first data acquisition unit 221 exceeds a predetermined threshold value, the second data acquisition unit 222 performs a flood hazard map or sediment. Get disaster hazard map layer data. The predetermined threshold is set in advance based on, for example, a water level or a rainfall amount that is determined to be necessary to check a flood hazard map or a sediment disaster hazard map.

  FIG. 8 is a flowchart showing a first example of prefetch processing according to the present embodiment. With reference to this FIG. 8, an example of the operation | movement of the process which prefetches a layer with high relevance degree is demonstrated. Here, an example of processing for prefetching a flood hazard map as a highly relevant layer when the water level or rainfall exceeds a predetermined threshold will be described.

  When the information processing apparatus 20 transmits the composite image to the information providing apparatus 10 (step S211), based on whether the transmitted composite image includes a water level sensor layer or a rainfall mesh information layer. In the information providing apparatus 10, it is determined whether or not the water level or rainfall information is displayed (step S212).

  When it is determined that the water level or rainfall information is not displayed (step S212: NO), the information processing apparatus 20 ends the process without performing prefetching. On the other hand, when it is determined that the water level or rainfall information is displayed (step S212: YES), the information processing apparatus 20 determines whether there is a location that exceeds a predetermined threshold for the water level or rainfall ( Step S213).

  If it is determined that there is no portion that exceeds the predetermined threshold for the water level or the rainfall (step S213: NO), the information processing apparatus 20 ends the process without performing prefetching. On the other hand, when it is determined that there is a location that exceeds a predetermined threshold for the water level or the rainfall (step S213: YES), the information processing device 20 sets the layer of the flood hazard map to the layer of the water level sensor or the rainfall mesh information. A layer having a high degree of association with the layer is extracted (step S214).

  Next, the information processing apparatus 20 determines whether or not a flood hazard map layer has been acquired (step S215). When it is determined that the flood hazard map layer has been acquired (step S215: YES), the information processing apparatus 20 ends the process without performing prefetching. On the other hand, when it is determined that the flood hazard map layer has not been acquired (step S215: NO), the information processing apparatus 20 acquires the flood hazard map layer data and stores the image of the layer as prefetch data. The data is stored in the unit 240 (step S216).

  Here, the flood hazard map layer prefetched by the information processing apparatus 20 is a first area layer corresponding to the display area in the information providing apparatus 10. Note that the information processing apparatus 20 may prefetch a flood hazard map layer in a wider range than the first area.

(2) Example of Prefetching Layers of Other Areas Based on Map Information The information processing apparatus 20 uses layers of other areas different from the map display area displayed on the information providing apparatus 10 based on the map information. Prefetch data. For example, when the water level or the rainfall amount exceeds a predetermined threshold value downstream of the river, the information processing apparatus 20 collects and prefetches upstream dam information. In this example, the dam information layer is set as a highly relevant layer in the water level sensor layer and the rainfall mesh information layer. The predetermined threshold value is set in advance based on, for example, the water level or the rainfall that is determined to be necessary to check the dam information.

  For example, when the value included in the layer data acquired by the first data acquisition unit 221 exceeds a predetermined threshold, the second data acquisition unit 222 determines that the first region is based on the map information corresponding to the first region. The data of the layer of the 2nd field which does not contain is acquired. At this time, the second data acquisition unit 222 acquires data of another layer related to the layer data acquired by the first data acquisition unit 221. Specifically, the second data acquisition unit 222 determines that the first area is based on the river information included in the map information of the first area when the water level or rainfall of the river in the first area exceeds a predetermined threshold. The data of the layer of the dam information in the second region, which is upstream of the river inside, is acquired.

  FIG. 9 is a flowchart illustrating a second example of prefetch processing according to the present embodiment. With reference to this FIG. 9, an example of the operation | movement of the process which prefetches the layer of another area | region based on map information is demonstrated. Here, an example of processing for prefetching a layer of dam information upstream of a river when the water level or rainfall exceeds a predetermined threshold will be described.

  When the information processing apparatus 20 transmits the composite image to the information providing apparatus 10 (step S221), based on whether the transmitted composite image includes a water level sensor layer or a rainfall mesh information layer. In the information providing apparatus 10, it is determined whether or not the water level or rainfall information is displayed (step S222).

  If it is determined that the water level or rainfall information is not displayed (step S222: NO), the information processing apparatus 20 ends the process without performing prefetching. On the other hand, when it is determined that the water level or rainfall information is displayed (step S222: YES), the information processing apparatus 20 determines whether there is a location that exceeds a predetermined threshold for the water level or rainfall ( Step S223).

  When it is determined that there is no portion that exceeds the predetermined threshold for the water level or the rainfall (step S223: NO), the information processing apparatus 20 ends the process without performing prefetching. On the other hand, when it is determined that there is a location that exceeds a predetermined threshold for the water level or the rainfall (step S223: YES), the information processing apparatus 20 sets the layer of the dam information as the layer of the water level sensor or the layer of the rainfall mesh information. And extracted as a layer having a high degree of relevance (step S224).

  Next, the information processing apparatus 20 specifies dam information upstream of the river at a location where the water level or the rainfall exceeds a predetermined threshold based on the map information (step S225).

  Next, the information processing apparatus 20 determines whether a layer including the specified dam information has been acquired (step S226). When it is determined that the layer including the identified dam information has been acquired (step S226: YES), the information processing apparatus 20 ends the process without performing prefetch. On the other hand, when it is determined that the layer including the specified dam information has not been acquired (step S226: NO), the information processing apparatus 20 acquires the data of the layer including the specified dam information, and The image is stored in the storage unit 240 as prefetch data (step S227).

Here, the layer including the specified dam information may be a layer of the first region or a layer of the second region depending on the position of the specified dam on the map. For example, when the specified dam information is in the first area, the information processing apparatus 20 prefetches the layer of the dam information in the first area. On the other hand, when the specified dam information is in the second area, the information processing apparatus 20 prefetches the layer of the dam information in the second area.
Note that the information processing apparatus 20 may prefetch a layer of dam information in a wider range than the first area when prefetching the dam information layer of the first area. Further, when prefetching the dam information layer of the second area, the information processing apparatus 20 may include the dam information layer of the first area.

  In addition, although the example which prefetches the layer of another area based on other related layers and map information in the above (1) and (2) has been described, the layer to be prefetched is determined based on other conditions. Also good.

  For example, the information processing apparatus 20 may prefetch based on the history information of layers synthesized in the past. Specifically, the second data acquisition unit 222 acquires layer data other than the data acquired by the first data acquisition unit 221 based on the layer history information acquired by the first data acquisition unit 221. As a result, the information processing apparatus 20 can prefetch a layer having a high degree of association collected at that time based on the history of layers that have been synthesized in the past. Therefore, the information processing apparatus 20 can easily reproduce the previously used layer combination.

  In addition, the information processing apparatus 20 quantifies the degree of association between layers based on the degree of association between layers set in advance or the history information of layers synthesized in the past, and based on the quantified degree of association. The prefetch layer and the prefetch layer area may be determined.

  Further, the information processing apparatus 20 may prefetch related layers based on the proximity of the positions where the thumbnail images of the layers are displayed side by side (stronger if they are in contact with each other, weaker as they are separated).

  As described above, the information processing apparatus 20 according to the present embodiment includes the layer data of the peripheral area where the movement from the display area of the map displayed on the information providing apparatus 10 is predicted, the layer being displayed, By prefetching highly relevant layer data, it is possible to improve the performance of information collection and improve the data display speed. Even when the information providing apparatus 10 is analyzing a narrow area, prefetching surrounding information in anticipation of movement of the map display area or enlargement of the scale makes it possible to immediately move or change the scale of the map. It can correspond to.

  As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to For example, each structure demonstrated in the above-mentioned 1st-3rd embodiment can be combined arbitrarily. In the following description, the information processing systems 1, 1A, 1B will be described as the information processing system 1 unless otherwise distinguished. In addition, the information processing devices 20, 20 </ b> A, and 20 </ b> B are described as the information processing device 20 when not particularly distinguished.

  Note that the information processing apparatus 20 may aggregate and summarize the data of each layer according to the scale of the base map. For example, the information processing device 20 calculates the truncation accuracy of latitude / longitude information based on the scale and the resolution of the map (vertical and horizontal pixels), generates a layer image by combining several objects in the layer, Some objects may be put together and displayed on the map. Alternatively, the information processing apparatus 20 may display a preset number of objects, and may switch to a process for grouping subsequent objects when the area where the displayed objects overlap exceeds a specified ratio. If the display mode of the object is a point, the information processing apparatus 20 may convert the object into a circle having a radius proportional to the number of points and display the circle. Further, if the display mode of the object is a region composed of a plurality of colors, the information processing apparatus 20 may display the object with a color ratio proportional to the area.

  Further, the information processing apparatus 20 may change the display area for each thumbnail of each layer according to the purpose. For example, the information processing apparatus 20 may change the scale and the display position according to the content of the information of each layer without reducing the thumbnail images of all layers to the same scale. For example, in the rain mesh information layer indicating the rainfall amount for each region, the information processing device 20 displays the entire layer screen depending on the scale when, for example, a 1 km × 1 km range is displayed in the same color (that is, the same rain amount). Are the same color and do not make sense. In that case, the information processing apparatus 20 changes the scale to display a wide area, and displays a thumbnail image so that a change in rainfall can be seen.

  Further, the information processing apparatus 20 may display an image of a layer in response to a change due to elapsed time. For example, the information processing apparatus 20 may change the display content in response to a change in the content of information such as the position and color over time. As an example, the information processing apparatus 20 changes color information of each mesh representing a change in rainfall with the passage of time in accordance with the content of the information in each layer of the rainfall mesh information. Moreover, the information processing apparatus 20 may acquire the location information of the local worker and display the movement progress.

  In addition, each structure with which the information processing system 1 mentioned above is provided can be distributed or aggregated and arrange | positioned in arbitrary computer apparatuses. For example, the information providing apparatus 10 and the information processing apparatus 20 can be arbitrarily set according to the cloud environment, the network environment, the number of users, the number of hardware prepared for configuring the information processing system 1, specifications, and the like. It can be distributed or aggregated on computer devices. In addition, the storage units included in the server apparatuses of the information providing apparatus 10 and the information processing apparatus 20 may be included in server apparatuses different from the respective server apparatuses. Further, the information providing apparatus 10 and the information processing apparatus 20 may be configured as an integrated server apparatus.

  In addition, you may make it implement | achieve at least one part function of the information provision apparatus 10 in the embodiment mentioned above, and the information processing apparatus 20 with a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed. Here, the “computer system” is a computer system built in the information providing apparatus 10 and the information processing apparatus 20 and includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In such a case, a volatile memory inside a computer system serving as a server or a client may be included and a program that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Moreover, you may implement | achieve part or all of the information provision apparatus 10 in the embodiment mentioned above, and the information processing apparatus 20 as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the information providing apparatus 10 and the information processing apparatus 20 may be individually made into a processor, or a part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to the advancement of semiconductor technology, an integrated circuit based on the technology may be used.

  1, 1A, 1B Information processing system, 10 Information providing device, 11 Projector, 12 Digital sheet, 13 Digital pen, 20, 20A, 20B Information processing device, 21 Sub display, 30 External database, 210 Display information acquisition unit, 220, 220B data acquisition unit, 221 first data acquisition unit, 222 second data acquisition unit, 230, 230A layer image generation unit, 231 determination unit, 232 conversion unit, 240 storage unit, 250 display control unit, 260 selection unit, 270 image Output unit, 271 extraction unit, 272 synthesis unit

Claims (11)

Information processing device
A display information acquisition unit that acquires display information related to a display area of a map displayed by the information providing device;
A first data acquisition unit for acquiring, from an external database, layer data of a first region corresponding to the display information acquired by the display information acquisition unit;
A second data acquisition unit for acquiring data of a layer other than the data acquired by the first data acquisition unit from an external database based on the data of the layer acquired by the first data acquisition unit;
A storage unit for storing an image based on the layer data acquired by the second data acquisition unit;
An image output unit that outputs an image based on the layer data of the first region acquired by the first data acquisition unit to the information providing device;
With
The information providing device is
A display control unit that displays the layer image output from the image output unit on a map;
The image output unit includes:
When the display information acquired by the display information acquisition unit changes, an image based on the layer data acquired by the second data acquisition unit stored in the storage unit according to the change is output.
Information processing system. The second data acquisition unit
Based on the layer data acquired by the first data acquisition unit, the layer data of the second region not including the first region is acquired as data of a layer other than the data acquired by the first data acquisition unit. ,
The information processing system according to claim 1. The second data acquisition unit
Based on the data of the layer acquired by the first data acquisition unit, data of another layer different from the layer acquired by the first data acquisition unit is stored in a layer other than the data acquired by the first data acquisition unit. Get as data,
The information processing system according to claim 1 or 2. The second data acquisition unit
The data of the other layer related to the data of the layer acquired by the first data acquisition unit based on the data of the layer acquired by the first data acquisition unit and the preset degree of association between the layers To get the
The information processing system according to claim 3. The second data acquisition unit
If the value included in the layer data acquired by the first data acquisition unit exceeds a predetermined threshold, acquire data of a layer other than the data acquired by the first data acquisition unit;
The information processing system according to any one of claims 1 to 4. The second data acquisition unit
Based on the map information corresponding to the first area, obtain layer data of the second area not including the first area;
The information processing system according to any one of claims 1 to 5. The second data acquisition unit
Based on the layer history information acquired by the first data acquisition unit, acquire layer data other than the data acquired by the first data acquisition unit;
The information processing system according to any one of claims 1 to 6. The display information includes information indicating the position, range, or magnification of a map displayed by the information providing device.
The information processing system according to any one of claims 1 to 7. A display information acquisition unit that acquires display information related to a display area of a map displayed by the information providing device;
A first data acquisition unit for acquiring, from an external database, layer data of a first region corresponding to the display information acquired by the display information acquisition unit;
A second data acquisition unit for acquiring data of a layer other than the data acquired by the first data acquisition unit based on the data of the layer acquired by the first data acquisition unit;
A storage unit for storing an image based on the layer data acquired by the second data acquisition unit;
An image output unit that outputs an image based on the layer data of the first region acquired by the first data acquisition unit to the information providing apparatus that displays the image superimposed on a map;
With
The image output unit includes:
When the display information acquired by the display information acquisition unit changes, an image based on the layer data acquired by the second data acquisition unit stored in the storage unit according to the change is output.
Information processing device. Information processing device
A display information acquisition step for acquiring display information relating to a display area of a map displayed by the information providing device;
A first data acquisition step of acquiring data of a layer in the first region corresponding to the display information acquired in the display information acquisition step from an external database;
A second data acquisition step of acquiring data of a layer other than the data acquired in the first data acquisition step from an external database based on the layer data acquired in the first data acquisition step;
A storage step of storing an image based on the layer data acquired in the second data acquisition step in a storage unit;
An image output step of outputting an image based on the layer data of the first region acquired in the first data acquisition step to the information providing device;
Have
The information providing device is
A display control step of displaying the layer image output in the image output step so as to overlap the map,
In the image output step,
When the display information acquired in the display information acquisition step changes, an image based on the layer data acquired in the second data acquisition step stored in the storage unit according to the change is output.
Information processing method. A display information acquisition step for acquiring display information relating to a display area of a map displayed by the information providing device;
A first data acquisition step of acquiring data of a layer in the first region corresponding to the display information acquired in the display information acquisition step from an external database;
A second data acquisition step of acquiring data of a layer other than the data acquired in the first data acquisition step from an external database based on the layer data acquired in the first data acquisition step;
A storage step of storing an image based on the layer data acquired in the second data acquisition step in a storage unit;
A first image output step of outputting an image based on the layer data of the first region acquired in the first data acquisition step to the information providing apparatus for displaying the image superimposed on a map;
When the display information acquired in the display information acquisition step changes, a second image output step of outputting an image based on the layer data acquired in the second data acquisition step stored in the storage unit according to the change When,
A program that causes a computer to execute.