JP6905922B2 - Visualizers, visualization methods, visualization programs and recording media - Google Patents

Description

The present invention relates to a visualization technique for displaying N types of data in a single screen.

Conventionally, there has been a heat map display as a display method for visualizing data in an easy-to-understand manner. A heat map is a method of illustrating numerical data as continuously changing colors. In particular, by displaying the data values at each point in the form of changes in color and shade by superimposing them on a two-dimensional map, areas that could not be obtained by simply displaying icons on the map or bar graphs. It is possible to obtain an easy-to-understand visual effect such as expressing a typical distribution characteristic as a dark color. As a technique for displaying such a heat map, openLayers. Software such as js is open to the public.

Further, conventionally, there has been an automatic determination technique for road pavement damage shown in Non-Patent Document 1. Damage such as cracks, flatness, and rutting of road asphalt pavement can be calculated as the degree of damage at each point and plotted on a map. At the time of display, a visualization method such as displaying an icon at the damaged point or calculating the damage ratio for each fixed section such as 20 m and displaying it in different colors by a method specified by the Ministry of Land, Infrastructure, Transport and Tourism has been conventionally used.

"Birth! Infrastructure x AI Industry Map Don't Miss Adult Images and Suspicious People, What Deep Learning Sees Next: Infrastructure Maintenance Market Aimed by AI (Pavement 2: NTT Comware)", http://itpro.nikkeibp. co.jp/atcl/column/17/051900200/052400007/, Website publication date June 6, 2017

Conventionally, when displaying data with a heat map, if two different types of data are displayed on the same screen, there is a problem that colors are mixed and visibility is deteriorated. There are several ways of thinking about color mixing, such as the three primary colors of light. For example, it is assumed that the three primary colors of light are mixed and the former data is superimposed in blue and the latter data is superimposed in green. In this case, the superimposed part is light blue, but since each data is actually continuous quantity or multi-valued data, it is subtle such as "slightly light blue", "light green", and "slightly bluish green". Colors will be drawn continuously on the map.

When viewed by humans, it is extremely difficult to read the approximate data values in each of the original data axes from the shades of these mixed results, and it lacks practicality as a display method for plotting two types of data. There was a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to display a plurality of types of data on a single screen by a heat map and easily visually recognize each type of data.

The present invention is a visualization device that displays N types (N ≧ 2) of data, and generates a base image that generates a base image showing a control unit that accepts input of a viewpoint angle and a visualization target that is the lowest layer. 3) The unit, the individual image generation unit that generates an individual heat map image of the data of the type for each type, the base image, and the individual heat map image for each type are multi-layered and viewed from the viewpoint angle. It has a display unit for generating a dimensional image and a display unit.

The present invention is a visualization device that displays N types (N ≧ 2) of data, and is an individual image generation unit that generates an individual heat map image of the type of data for each type, and the N types of individual heat. Of the map images, a superposed image generator that generates a superposed heat map image by superimposing at least two types of individual heat map images, and one of the at least two types of heat map images are to be visualized. It is a heat map image of design prediction data predicted at the time of design, and the other one of the at least two types of heat map images is a heat map image of actual measurement data showing the current state of the visualization target, and the overlay. The combined image generation unit colors or blinks a portion of the superimposed heat map image in which the design prediction data is better than a predetermined threshold value and the actually measured data is worse than the predetermined threshold value with a predetermined color.

The present invention is a visualization method for displaying N types (N ≧ 2) of data performed by a computer, and generates a control step that accepts an input of a viewpoint angle and a base image showing a visualization target that is the lowest layer. A base image generation step to be performed, an individual image generation step for generating an individual heat map image of the type of data for each type, and the base image and the individual heat map image for each type are layered to form the viewpoint angle. Perform the generation step of generating the three-dimensional image viewed in.

The present invention is a visualization method for displaying N types (N ≧ 2) of data performed by a computer, and includes an individual image generation step for generating an individual heat map image of the type of data for each type, and the N. Of the types of individual heat map images, a superposed image generation step of generating a superposed heat map image in which at least two types of individual heat map images are superposed is performed, and among the at least two types of heat map images. One is a heat map image of design prediction data predicted at the time of designing the visualization target, and the other one of the at least two types of heat map images is a heat of actual measurement data indicating the current state of the visualization target. It is a map image, and the superimposed image generation step determines a portion of the superimposed heat map image in which the design prediction data is better than a predetermined threshold value and the actually measured data is worse than a predetermined threshold value. Color or blink with color.

The present invention is a visualization program for making a computer function as the visualization device.

The present invention is a recording medium on which a visualization program for making a computer function as the visualization device is recorded.

According to the present invention, while displaying a plurality of types of data on a single screen by a heat map, each type of data can be easily visually recognized.

The configuration of the visualization device is shown. Shows the contents of the screen display. The flowchart is shown. The relationship between the two types of data to be displayed is shown. An example of opacity calculation is shown.

One of the embodiments of the present invention is shown below.

FIG. 1 shows the configuration of the visualization device 101 according to the present embodiment. The visualization device 101 has the following functions. That is, screen 102, input device 103, 3D display unit 104, map generation unit 110, heat map generation unit A 111, heat map generation unit B 112, heat map generation unit K 113, input control unit 114, opacity calculation unit 115. In addition, the data and variables of the map DB 120, the master DB-A 121, the master DB-B A 122, the master DB-B B 123, and the angle variable storage unit 124 are provided.

The screen 102 is an output device such as a display. The input device 103 may be a mouse, a touch pad, a keyboard, a button, or the like, and is a device for inputting an instruction for changing a three-dimensional display viewpoint, particularly, an angle (viewpoint angle) for viewing an object displayed on the screen 102. be. The input angle is held by the angle variable storage unit 124.

The 3D display unit 104 is an API (Application Programming Interface) instruction from the map generation unit 110, the heat map generation unit A 111, the heat map generation unit B 112, and the heat map generation unit K 113, and is a tertiary view from an input angle. It has a function to generate an original image and display it on the screen 102. The 3D display unit 104 is, for example, HTML5, WebGL, three. js, openlayers. It can be realized by using publicly available software such as js and publicly available technology.

The map DB 120 holds data for generating a base image showing the visualization target at the bottom layer. Here, the map DB 120 holds a map in the display area to be visualized.

The master DB-A 121 holds data for generating a heat map image (individual heat map image) of a certain type of data in the display area corresponding to the map DB 120. Here, the master DB-A 121 holds the pavement damage data of the inspection result regarding the road pavement damage in the display area corresponding to the map DB 120.

Master DB-B A 122 and Master DB-B B 123 hold data for generating heat map images (individual heat map images) of other types of data in the display area corresponding to map DB 120. Here, the master DB-B A 122 holds the traffic volume data predicted at the time of designing the road pavement in the display area corresponding to the map DB 120. Master DB-B Otsu 123 holds data on the number of years elapsed since road pavement construction in the display area corresponding to map DB 120.

The input control unit 114 (control unit) receives the input of the angle (viewpoint angle) and stores it in the angle variable storage unit 124. The map generation unit 110 (base image generation unit) generates a base image (here, a map image) in which the visualization target to be the lowest layer is shown.

The heat map generation unit A 111 and the heat map generation unit B 112 (individual image generation unit) generate individual heat map images of the type of data for each type of data. The heat map generation unit K 113 (superimposed image generation unit) generates a superposed heat map image in which at least two types of individual heat map images are superimposed among a plurality of types of individual heat map images.

The opacity calculation unit 115 calculates the opacity of each of the at least two types of individual heat map images and the superimposed heat map image using the input angle. The 3D display unit 104 multi-layers the base image and the individual heat map image for each type, and generates a three-dimensional image viewed from an input angle. Further, the 3D display unit 104 (display unit) adjusts at least two types of individual heat map images and superimposed heat map images using the corresponding opacity to generate a three-dimensional image.

The operations of the map generation unit 110, the heat map generation unit A 111, the heat map generation unit B 112, the heat map generation unit K 113, the input control unit 114, and the opacity calculation unit 115 will be described in detail below.

FIG. 2 shows the contents of the screen display displayed on the screen 102. In the present embodiment, the screen is displayed three-dimensionally with all four layers. A map (base image) is displayed on the bottom layer (201) which is the base. Here, it is assumed that N = 2 (type) data is displayed as the data.

On the layer A (202), the measured surface, that is, the pavement damage data of the inspection result of the master DB-A 121 is displayed as a heat map. In layer B (204), the design prediction surface, that is, the value represented by the product of the traffic volume of master DB-B A 122 and the elapsed years of master DB-B B 123 is used as the data to be displayed, and the heat map is used. Display as. Further, layer K (203) displays a superposed heat map, that is, the overlap of the data of layer A and the data of layer B. In the illustrated example, a multilayer structure is formed in which the base layer (201), the layer B (204), the layer K (203), and the layer A (202) are arranged in this order from the bottom.

FIG. 2 is only an example of screen display, and the process of actually drawing such a screen is performed by each function in the visualization device 101 performing the operations described in detail below. be.

FIG. 3 shows a flowchart. First, when the visualization device 101 starts processing (procedure 300), the map generation unit 110 reads the map DB 120 and generates an image to be displayed on the base layer (201) (procedure 301).

Next, the heat map generator A 111 reads the pavement damage data of the inspection result regarding the road pavement damage from the master DB-A 121, and relates to the pavement damage at each point in the display area of the layer A (202) shown in FIG. A heat map image is generated after applying the data values to 10 stages from 1 to 10, and is set as an image to be displayed on the layer A (202). In addition, the heat map generation unit A 111 passes the values of each point applied to the 10 stages to the heat map generation unit K 113 (procedure 302).

The heat map image is generated by the above-mentioned openlayers. js has as a basic function. The heat map generation unit A 111 describes openlayers by writing a program that calls the API. Heat map image generation can be realized using js. At that time, the heat map generator A 111 uses white for the stage with a small degree of damage and yellow (first color tone) for the stage with a large degree of damage. The image will be generated.

In addition, in the application to the above 10 stages, for example, a situation in which the damage is large above a certain level may be set as stage 10, and values below that level may be distributed in direct proportion.

Next, the heat map generator B 112 reads the traffic volume data predicted at the time of road pavement design from the master DB-B A 122, and the elapsed years data from the road pavement construction from the master DB-B B 123. By reading and calculating the product (multiplication) of the values of these two data for each point in the display area of layer B (204) shown in FIG. 2, the calculated value (design prediction) related to the design prediction at each point. The value) is obtained, the calculated value is applied to 10 steps from 1 to 10, a heat map image is generated, and the heat map image is set as an image to be displayed on the layer B (204). In addition, the heat map generation unit B 112 passes the values of each point applied to the 10 stages to the heat map generation unit K 113 (procedure 303).

At that time, the heat map generation unit B 112 specifies the API parameter so that the above calculated value, that is, the stage where the design prediction value is small is white, the stage where the design prediction value is large is green (second color tone), and the color is gradually coded. The heat map image will be generated. The heat map generation unit B 112 specifies a color tone (green) different from the color tone (yellow) specified by the heat map generation unit A 111.

For fitting to the above 10 steps, for example, the logarithm of the above calculated value of each point is taken to calculate the logarithm. In addition, a logarithm calculated by taking the logarithm of a certain number of years and a certain amount of traffic is set in advance as a reference value. Then, the case where the logarithmic value of the calculated value is the same as or higher than the reference value is set as step 10, and the logarithmic value of the calculated value less than that may be calculated by allocating the steps in direct proportion.

Next, the heat map generation unit K 113 is based on the values of the two types of data of each point in the display area passed in the steps 302 and 303, and based on the coloring policy shown below, the layer K ( Generate a heatmap image to be displayed in 203) (step 304).

FIG. 4 shows the relationship between the two types of data to be displayed. The heat map generation unit K 113 performs coloring processing for each point on the heat map to obtain the hue of the points after superposition from the values of the two types of data that are the basis of superposition. It shows the concept of coloring processing at points.

That is, the heat map generation unit K 113 represents the design prediction data in which each point of the heat map image displayed on the layer K (203) is applied to each stage and the actual measurement data of the pavement damage on two vertical and horizontal axes. It is applied on a color plane, different color tones are assigned to each of the four quadrants of the color plane, and the density of the color tones is changed according to the distance from the origin.

Specifically, the vertical axis 405 shows the value of the data represented by layer A (202), that is, the value of the measured surface, and the horizontal axis 406 is the value of the data represented by layer B (204), that is, the value of the design prediction surface. Indicates a value. Each point on the heat map image corresponds to any one point on the two-dimensional plane shown in FIG.

Here, for example, at a point where "traffic volume x age" is small but "paving damage as an inspection result" is large, there is a possibility that serious problems such as poor construction and land subsidence may occur, and an urgent investigation etc. Is presumed to be necessary, so we will call attention by coloring it in red in the superimposed heat map image. That is, the quadrant 402 is based on red, and is colored so that the value on the measured surface becomes an abnormal value of large damage, that is, the higher the value, the deeper the red.

That is, in the superimposed heat map image, the portion where the design prediction data is better than the predetermined threshold value and the measured data is worse than the predetermined threshold value is colored or blinked with a predetermined color to call attention.

The other quadrants are as follows. Quadrant 403 is all white. Quadrant 401 is based on yellow, and is colored so that the value on the measured surface becomes deeper yellow as the value on the measured surface becomes larger, that is, the higher it is. Quadrant 404 is based on green, and is colored so that the value of the design prediction surface becomes darker as the value of the design prediction surface becomes larger, that is, to the right.

As shown above, by fixing the color tone for each quadrant and changing only the color intensity, it solves the problem that it is difficult for humans to distinguish subtle shades and facilitates reading. In addition, the present embodiment has the advantage that a conspicuous color tone can be arranged in the quadrant to be especially alerted without relying on the color mixing law, and the alertness is improved.

The above is an example of the color scheme and the density setting policy for coloring, and other implementations are possible. For example, depending on the type of data and the field of application, quadrant 401 may be the most serious situation. Therefore, the color schemes of quadrant 401 and quadrant 402 may be exchanged and red may be arranged in quadrant 401.

Further, when a color is expressed by hue, lightness, saturation, or the like, the lightness or saturation may be changed independently, or both may be changed at the same time.

Alternatively, the coloring of the quadrant 401 may adopt a law that becomes darker toward the right instead of a law that becomes darker toward the top.

Furthermore, the concentration may be determined by an arbitrary calculation formula that takes two variables X and Y as inputs. For example, the density of the color tone may be changed according to the distance from the origin based on an arbitrarily determined measurement method, and specifically, the following calculation method may be used. For example, an example of calculating points on quadrant 401 is shown. A reference line 410 is provided in advance in each quadrant. The reference line 410 may be a straight line represented by Y = X, or may be a straight line having a slope other than 1. For a point on the reference line 410 (eg, point 411), the distance 412 from the origin may be used as the color intensity (density).

Alternatively, for a point not on the reference line 410 (for example, point 413), a perpendicular line 414 is drawn on the reference line 410, the distance 415 from the intersection of the perpendicular line 414 and the reference line 410 to the origin, and the length of the perpendicular line 414. The color depth may be obtained by using a calculation formula using these two values, for example, (distance 415) ÷ (1 + perpendicular line length 416 × constant c). The color intensity may be reflected in the lightness and saturation.

By performing the coloring process of FIG. 4 described above, the meaning of the combination of the two types of data can be highlighted. For example, in the above example, at a point where "traffic volume x elapsed years" is large and "paving damage as an inspection result" is also large, the damage itself is large but as planned, and no urgent response is required. On the other hand, there is a possibility that serious problems such as poor construction and land subsidence may occur at points where "paving damage as a result of inspection" is large even though "traffic volume x age" is small, so urgent investigations are required. Presumed to be necessary.

When attempting to superimpose and display such two types of data as a heat map, in the present embodiment, it is possible to display a part that seems to be a serious problem in a conspicuous color (for example, red) to call attention to humans. can. As a result, in the present embodiment, as compared with the case where the heat map is displayed by the conventional simple color mixture, the point of interest derived from the combination of a plurality of types of data is visually emphasized. Therefore, each type of data can be easily visually recognized.

Next, the opacity calculation unit 115 calculates the opacity of each of the layers A (202), the layer B (204), and the layer K (203) based on the angles stored in the angle variable storage unit 124. Then, each calculated opacity is passed to the 3D display unit 104 (step 310). Opacity indicates the degree to which the layer can be seen through. When the opacity is 0%, the layer becomes completely transparent and invisible, and when the opacity is 100%, the layer becomes opaque. The lower layers disappear.

The basic calculation policy of opacity is that when the angle variable is 90 degrees, that is, when viewed from directly above, only the layer K (203) appears to overlap the base layer (201). When drawing according to the angle, the opacity of layer A (202) and layer B (203) gradually increases so that the layer K (203) can be seen clearly as the angle approaches horizontal. Change the opacity of.

For example, the following formula may be used.

Opacity (%) of layer K (203) = angle variable ÷ 90 × 50
Opacity (%) of layer A (202) = Opacity (%) of layer B (204) = (1-angle variable ÷ 90) × 50
The opacity of the base layer (201) is always 100%. Further, the maximum value of the opacity of the layers K (203), the layer A (202) and the layer B (204) is set to 50% so that the base layer (201) can be seen through. ..

FIG. 5 shows an example of opacity calculation. An example of the above calculation formula is illustrated as shown in Graph 501 of FIG. 5 (a). Function 502 represents the opacity of layer K (203) and function 503 represents the opacity of layers A (202) and B (204), both of which are graph plots of the above equations.

The scope of the present invention is not limited to this, and the opacity may be changed non-linearly according to the angle, or the opacity may be changed discontinuously.

Graph 511 in FIG. 5B is an example of discontinuously changing the opacity. The function 512 represents the opacity of the layer K (203), the function 513 represents the opacity of the layers A (202) and the layer B (204), and the opacity value is 0% at the threshold t (514). It is defined in this example as a function that alternates discontinuously, such as 50% or 50% → 0%. In other words, in this example, only the layer K (203) is displayed when the threshold value t at a certain angle is exceeded, and conversely, only the layer A (202) and the layer B (204) are displayed when the threshold value t is exceeded. It corresponds to the case where the implementation is performed.

Next, the 3D display unit 104 displays the layers A (202), B (204), and layer K (203) generated (drawn) in steps 302, 303, and 304 with the opacity specified for each. It is adjusted, superposed on the base layer (201), multi-layered from the viewpoint of viewing from the direction of the angle variable stored in the angle variable storage unit 124, drawn to generate a three-dimensional image, and displayed on the screen 102. (Procedure 311).

After that, when an input instruction for changing the viewing angle is received from the input device 103 (procedure 320), the input control unit 114 updates the angle variable of the angle variable storage unit 124 with the input angle (procedure 321), and then again in step 310. By repeating the following steps from 1 to, the drawing contents displayed on the screen 102 are updated (control 322).

By using the visualization device 101 described above, a plurality of types of data can be displayed on a single screen by a three-dimensional heat map (superposition of multi-layer heat maps), and a plurality of types of data can be displayed by changing the display angle. It is possible to visually recognize the result of superimposing the above-mentioned data values, and it is possible to easily visually recognize each type of data value.

Further, there is an advantage that the data can be superimposed and displayed while visually emphasizing the point of interest derived from the combination of the plurality of data by the color indicating the abnormal state or the like.

Further, in the present embodiment, one type of heat map image is a heat map image of design prediction data predicted at the time of designing the visualization target, and the other type of heat map image indicates the current state of the visualization target. It is a heat map image of the actual measurement data, and in the superimposed heat map image, a portion where the design prediction data is better than a predetermined threshold value and the actual measurement data is worse than the predetermined threshold value is colored or blinked with a predetermined color.

Specifically, the design prediction data is data for predicting deterioration of road pavement, and the actual measurement data is data indicating the current state of road pavement.

By displaying the deterioration and damage of the road pavement on the heat map image in this way, the severely damaged sections and areas will be displayed on the map as dark areas, so for example, road maintenance by the local government is perfect. There is an advantage that areas that are not covered or areas where the pavement is severely damaged due to an earthquake or the like can be displayed in a much easier-to-understand manner than the conventional display using icons.

Regarding damage to road pavement, it goes without saying that the damage progresses as the years after construction progress, but it is also known that the damage progresses more rapidly as the traffic volume of heavy vehicles such as trucks increases. ing. For this reason, when designing pavement, the traffic volume is predicted in advance, and the pavement is constructed according to the traffic volume or reflected in the repair plan. Sections and areas that violate such repair plans may cause serious problems such as poor construction and land subsidence, and in the present embodiment, such sections and areas can be easily visually recognized.

The present invention is not limited to the above embodiment, and many modifications can be made within the scope of the gist thereof.

For example, in the present embodiment, the three-dimensional image displayed on the screen 102 is a base layer (201) and layers B (204) and A (202) (individual heat map images) as shown in FIG. ) And layer K (203) are multi-layered. The scope of the present invention is not limited to this, and only the base layer (201) and the layers B (204) and A (202) (individual heat map images) may be multi-layered. Even in this case, it is possible to easily visually recognize each type of data while displaying a plurality of types of data on a single screen by a heat map.

In the present embodiment, the position on the map cannot be moved, and only the function of changing the viewing angle is shown. The scope of the present invention is not limited to this, and the position of the map may be scrolled, and the map may be zoomed in and out by operating a mouse or a wheel, as in the usability of general map software. In order to realize this, when an input operation is performed in step 320 of FIG. 3, the input control unit 114 determines whether the operation involves changing the angle or moving the map (scrolling, zooming in, zooming out). In the case of an operation involving movement of the map, the function can be realized by returning to the procedure 301 as in the control 330 and executing the image generation process of each layer again.

In the present embodiment, the data to be displayed is N = 2 (type). The scope of the present invention is not limited to this, and three or more types (three layers) of heat maps may be superimposed and displayed. For example, instead of calculating the traffic volume data × the elapsed years data and displaying them collectively in the layer B, the former may be displayed in the layer B and the latter may be displayed in the layer C. In that case, when calculating the superposed heat map layer K, the calculation may be performed based on the three data from the layer A to the layer C.

In the present embodiment, each layer to be displayed does not have to be a still image, and moving images or animation processing may be incorporated. In particular, in the superposed heat map layer K, the “special attention” region may be displayed to improve visibility by incorporating movements such as blinking. The software group used for implementing the 3D display unit 104 has such a three-dimensional superposition of moving layers as a basic function, and these display forms are feasible.

In the present embodiment, the three-dimensional display is the basis, and when the viewpoint is set directly above (when the angle variable is 90 degrees), only the superimposed heat map layer K is displayed. The scope of the present invention is not limited to this, and the viewpoint may always be fixed directly above. That is, the implementation may have only the display function of the superposed heat map layer K. Even in this case, it is possible to easily visually recognize each type of data while displaying a plurality of types of data on a single screen by a heat map.

Further, if the mouse over operation is performed on the screen while the superimposed heat map layer K is visible, only the area around the mouse cursor may be switched to the data display of a specific layer such as layer A or layer B. At that time, the user may be able to specify which data display to switch to by selecting the icon. Alternatively, by pressing or swiping the display format switching button, the view in the superimposed display may be switched to a view in which only layer A is visible or a view in which only layer B is visible. Alternatively, when the user does not operate the viewpoint, the viewpoint may be rotated in the air or switched one after another to obtain a dynamic visual effect. By incorporating these secondary views, it is possible to obtain the advantage that the visibility of individual data values is further improved.

The visualization device 101 described above includes, for example, a CPU (Central Processing Unit, processor), a memory, a storage (HDD: Hard Disk Drive, SSD: Solid State Drive), a communication device, an input device, and an output. A general-purpose computer system including a device can be used. In this computer system, each function of the visualization device 101 is realized by executing a predetermined program loaded in the memory by the CPU. In addition, the program for the visualization device 101 can be stored in a computer-readable recording medium such as an HDD, SSD, USB memory, CD-ROM, DVD-ROM, or MO, or can be distributed via a network.

101: Visualization device
102: Screen
103: Input device
104: 3D display
110: Map generator
111: Heat map generator A
112: Heat map generator B
113: Heat map generator K
114: Input control unit
115: Opacity calculation unit
120: Map DB
121: Master DB-A
122: Master DB-B A
123: Master DB-B B
124: Angle variable storage

Claims (7)

A visualization device that displays N types of data (N ≧ 2).
A control unit that accepts input of the viewpoint angle and
A base image generator that generates a base image that shows the visualization target that is the bottom layer,
For each type, an individual image generator that generates an individual heat map image of the type of data,
A display unit that multi-layers the base image and individual heat map images for each type to generate a three-dimensional image viewed from the viewpoint angle.
A superposed image generation unit that generates a superposed heat map image in which at least two types of individual heat map images are superposed among the N types of individual heat map images.
It has an opacity calculation unit that calculates the opacity of each of the at least two types of individual heat map images and the superposed heat map image using the viewpoint angle.
The display unit is a visualization device that adjusts the at least two types of individual heat map images and the superimposed heat map image using the corresponding opacity to generate the three-dimensional image. The visualization device according to claim 1.
One of the at least two types of heat map images is a heat map image of design prediction data predicted at the time of designing the visualization target.
The other one of the at least two types of heat map images is a heat map image of actual measurement data showing the current state of the visualization target.
In the superimposed heat map image, the superimposed image generation unit colors or blinks a portion of the superimposed heat map image in which the design prediction data is better than a predetermined threshold value and the actually measured data is worse than the predetermined threshold value with a predetermined color. A visualization device characterized by letting the user do it. The visualization device according to claim 2.
The superimposed image generation unit
Each point of the superposed heat map image is fitted on a color plane represented by the vertical and horizontal two axes of the design prediction data and the actual measurement data.
A visualization device characterized in that different color tones are assigned to each of the four quadrants of the color plane, and the density of the color tones is changed according to the distance from the origin. The visualization device according to any one of claims 1 to 3.
The base image is a map
One of the at least two types of heat map images is a heat map image of design prediction data for predicting deterioration of road pavement.
The other one of the at least two types of heat map images is a visualization device, which is a heat map image of actual measurement data showing the current state of the road pavement. It is a visualization method for displaying N types (N ≧ 2) of data performed by a computer.
Control steps that accept input of viewpoint angle and
A base image generation step that generates a base image that shows the visualization target that is the bottom layer,
For each type, an individual image generation step to generate an individual heat map image of the type of data,
A superposed image generation step of generating a superposed heat map image in which at least two types of individual heat map images are superposed among the N types of individual heat map images.
An opacity meter step that calculates the opacity of each of the at least two types of individual heat map images and the superimposed heat map image using the viewpoint angle.
The base image, the individual heat map image for each type, and the superposed heat map image are multi-layered, and a generation step of generating a three-dimensional image viewed from the viewpoint angle is performed.
The generation step is a visualization method characterized in that at least two types of individual heat map images and the superposed heat map image are adjusted using the corresponding opacity to generate the three-dimensional image. A visualization program for operating a computer as the visualization device according to any one of claims 1 to 4. A recording medium on which a visualization program for operating a computer as the visualization device according to any one of claims 1 to 4 is recorded.

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