JP6655439B2 - Traverse survey result display device - Google Patents

Description

  The present invention relates to a traverse survey result display device.

  As a traverse survey result display device capable of adjusting a closing error, a device disclosed in Patent Document 1 is conventionally known. In this conventional example, when a point name of a reference point, an angle and a distance of a measurement point, and the like are input to a mobile phone at a surveying site, the data is transmitted to a server computer, and closed at the server computer using the registered coordinates of the reference point. The difference (closing error) is calculated, and the calculation result is transmitted to the mobile phone and displayed.

  In general, for surveying, the allowable range of the closing error is determined in advance by the work rules, and if the closing error calculated as described above exceeds this allowable range, it must be re-measured. On the other hand, when the closing error is within the allowable range, the closing error is distributed to the respective measuring points to adjust the closing error, and thereby the coordinates of the measuring point are finally determined.

JP 2003-337023 A

  However, when only the coordinates after the closing error distribution is provided as the survey result, there is a disadvantage that it is difficult to confirm the inherent closing error afterward.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described drawbacks, and has as its object to provide a traverse survey result display device capable of confirming an inherent closing error ex post facto.

According to the invention, the object is
The traverse survey result including the measurement coordinate value of the survey point 1, the connection destination survey point 1 of the survey line 2 connected to the survey point 1 and the intersection angle information between the survey lines 2 and 2 is stored, and the closing error for each of the survey points 1 is stored. A survey data storage unit 3 capable of referring to the assigned coordinates after distribution,
A preprocessing unit 4 for sequentially searching the survey data storage unit 3 for a survey point 1 having no composite connection to another survey point 1 and excluding it from the processing target, and extracting the remaining survey point 1 as the processing target survey point 1 When,
An error calculator 5 for calculating a closing error of each of the processing target measuring points 1;
A polygon extraction unit 8 for extracting a unit polygon 7 having a minimum area unit from a survey line network obtained by dividing a survey area by survey lines 2 connecting the processing target survey points 1 and 1;
A polygon error giving section 9 for giving the maximum value of the closing error of each measurement point 1 constituting each unit polygon 7 to the corresponding unit polygon 7 as an error representative value;
A display control unit 11 for displaying, on the display unit 10, the assigned coordinates and the survey line 2 after the closing error distribution, for each unit polygon 7, so that the division by the error representative value can be identified;
This is achieved by providing a traverse survey result display device having:

  According to the present invention, the unit polygon 7 is defined as a unit polygon 7 having a minimum area unit which forms a closed figure surrounded by the survey line 2 from a survey network in which the surveying area is divided by the survey line 2 connecting the processing target survey points 1 and 1. It is extracted by the extraction unit 8. An error representative value is given to each unit polygon 7 by the polygon error giving unit 9, and the maximum value of the closing errors of the measurement points 1 constituting the corresponding unit polygon 7 is adopted as this error representative value.

  The display of the survey result on the display unit 10 by the display control unit 11 is performed by arranging the survey line 2 at the coordinates given by distributing the closing error, and the classification based on the error representative value can be identified for each unit polygon 7. Done in a simple manner. Specifically, for example, a numerical value of the error representative value is displayed at or near the display position of the unit polygon 7, or the measurement line 2 forming the unit polygon 7 is color-coded according to the classification of the error representative value, or a different pattern is displayed. Or can be displayed.

  Therefore, according to the present invention, by observing the display of the display unit 10, the closing error inherent in the survey result can be confirmed ex post facto. For example, by using this survey result, another When the surveying is performed, it is possible to accurately grasp the possibility that the positional accuracy is reduced due to the accumulation of the closing errors.

  As described above, a numerical value or the like can be used as the display mode of the error representative value. However, the display control unit 11 selects the color selected from the color table 12 in which the color corresponds to the range of the closing error value. It is also possible to display the polygons 7 on the display unit 10 in different colors, and in this case, it is possible to more intuitively grasp the degree of the possibility of a closing error relating to the area of the polygons 7. It is desirable to set the number of error representative values to a number that makes it easy to grasp the approximate amount of the closing error and does not complicate it.

The unit extraction of the unit polygon 7 by the polygon extracting unit 8 can be performed by searching all the survey lines 2 in the survey network for the combination of the survey lines 2 constituting the section. About part 8
With respect to an approaching line 2 entering the processing target point 1 from another processing target point 1, a clockwise or counterclockwise rotation of the measuring line 2 exiting from the processing target point 1 to another processing target point Is designated as exit line 2 and the associated exit line 2 is associated with one entrance line 2 for all processing target points 1. An extraction unit 13;
For all the processing points 1 to be processed, an incoming line 2 for the processing point 1, an outgoing line 2 for the incoming line 2, and a processing point 1 corresponding to the outgoing line 2 are sequentially processed to be processed. A polygonal survey line extraction unit 14 for searching until the search result 1 matches the processing target survey point 1 at the start of the search, and extracting a polygon constituent survey line 2;
And an output unit 15 for outputting as a processing target polygon a polygon formed by the remaining polygon-constituting survey lines 2 excluding the overlap due to the circular permutation of all the polygon-constituting survey lines 2 extracted by the polygon survey-line extracting unit 14. If this is the case, the extraction efficiency will improve.

  In the closed traverse survey, which is a closed polygon method of traverse survey, a survey network composed of two or more unit polygons is set, and the position of a new point is determined on the condition that a side length and a wide angle obtained by measurement by a total station are used. It is common to calculate, but it is also possible to specify the side length by measuring the side length with a tape measure, and for the wide angle by measuring the direction of the side with a magnetic needle, the result of so-called compass surveying using such a measuring method It can also be realized by using. In particular, in forest surveys where compass surveys are often used, the visibility is poor and closure errors are likely to occur. .

Further, the traverse survey result display device according to the present invention,
The traverse survey result including the measurement coordinate value of the survey point 1 and the destination survey point 1 of the survey line 2 connected to the survey point 1 is stored, and the assigned coordinates after the closing error distribution for each of the survey points 1 can be referred to. A survey data storage unit 3,
A display position calculating unit 16 for calculating coordinates on the display unit 10 of the measuring point 1 based on the measured coordinate values and the assigned coordinates after the closing error distribution,
It is also possible to have a display control unit 11 for displaying measurement points 1 based on the measured coordinate values and the assigned coordinates after the closing error distribution on the same screen of the display unit 10 so that both can be identified. .

  In order to grasp the closing error inherent in the survey result, when displaying the survey result as described above, in addition to expressing the intrinsic closing error in numerical values or colors in polygon units, before and after the closing error is given It is sufficient to simultaneously display the measurement point 1 in both coordinates so that it can be identified. In this case, the overall tendency of the closing error can be intuitively understood, and the closing error inherent in the survey result can be grasped in more detail.

Furthermore, the coordinate conversion unit 17 that converts the measured coordinate value of each of the measurement points 1 or the assigned coordinate value after the closing error distribution from a relative coordinate system based on an initial known point to a public coordinate system,
When the display control unit 11 displays each survey point 1 together with spatial information other than the survey area displayed in the public coordinate system, it helps to grasp the survey position at the time of forest survey. As the space information, for example, a topographic map or the like can be used.

  As is apparent from the above description, according to the present invention, it is possible to provide a traverse survey result display device capable of confirming an inherent closing error ex post facto, for example, it is possible to improve the work efficiency of forest surveying become.

It is a hardware block diagram of the traverse survey result display apparatus concerning this invention. It is a figure showing an example of a display screen after data processing. It is a schematic flowchart of traverse survey data processing. It is a flowchart of extraction processing of a line group, calculation of a closing error, and adjustment processing. It is a flowchart of a polygon extraction process. FIG. 3A is a diagram illustrating data relating to measurement points and survey lines, FIG. 3A is a diagram illustrating input data, FIG. 3B is a diagram illustrating a database created based on the input data, and FIG. 3C is a data process such as closing error adjustment; FIG. 6 is a diagram showing a database created by reflecting the above. FIGS. 7A and 7B illustrate the contents of data processing by illustration, in which FIG. 7A is an image diagram of input data, and FIG. 7B is an image diagram when DANGLE line removal processing, which is the first stage of line grouping processing, is completed. FIG. 3 is a diagram illustrating the contents of a group determination process, which is the second stage of the grouping process of survey lines, in which (a) is an image diagram illustrating the contents of a primary group determination process based on a known point, and (b) is an image diagram. It is an image figure explaining the contents of the judgment processing of the secondary group based on the result of the primary group judgment processing. The illustration of the second stage of the line grouping process and the contents of the calculation and the adjustment process of the closing error are illustrated graphically. (A) of the display screen of the re-measurement instruction in the second stage of the line grouping process is shown. FIG. 4B is a diagram illustrating an example, and FIG. 4B is a diagram illustrating an example of a display screen of a re-measurement instruction in the calculation and adjustment processing of the closing error. The contents of the polygon extraction process are illustrated graphically, where (a) is an image diagram showing initial data before data processing, and (b) is a primary process which is a combination extraction process of an ingress line and an exit line for each measurement point. It is a figure explaining contents. 7A and 7B are diagrams illustrating the contents of polygon extraction processing, in which FIG. 7A is an image diagram illustrating a primary processing result, and FIG. 8B is an image diagram illustrating a result of a polygon configuration measurement line extraction process that is a secondary process. FIG. 4 is an image diagram illustrating the entire primary processing content of the polygon extraction processing by way of illustration. FIG. 7 is a diagram for explaining the contents of the display processing, and is an image diagram showing a representative example of a display processing result. FIGS. 7A and 7B are diagrams illustrating the contents of the display processing, in which FIG. 7A is an image diagram showing an example of another display processing result, and FIG. FIGS. 7A and 7B are diagrams illustrating input data, in which FIG. 7A illustrates input data for the first time, and FIG. 8B illustrates input data after re-measurement.

  1 to 13 show an embodiment of the traverse survey result display processing according to the present invention. This embodiment processes forest survey data. As shown in FIG. 1, a traverse survey result display device includes a control unit 20 including a central processing unit, a storage unit 21 including a memory, a keyboard, a disk drive, and the like. And a portable computer, such as a notebook computer or a tablet computer, provided with an input / output unit 22 composed of an LCD and the display unit 10 composed of an LCD.

  The storage unit 21 includes a survey data storage unit 3 that converts the forest survey data into a database and stores the data, and an adjustment data storage that converts the forest survey data into a database after reflecting a closing error adjustment and the like to be described later. A color table 12 that associates colors for color-coded display according to the degree of the closing error. In this embodiment in which the above-mentioned forest survey data is measured using a compass or the like by so-called compass survey, the contents of the survey that has been transcribed in the field notebook are input to the traverse survey result display device by keyboard input or the like. When the survey is performed using the total station, the data can be taken into the traverse survey result display device using the data output function of the total station.

  Specifically, as shown in the image of FIG. 6A, the contents of the survey are, for each survey line 2, the ID (measurement line name), the name of the end point, the azimuth angle, the elevation angle, the oblique distance, and the like. Be composed. The content of the survey is specified by relative coordinates based on a known point (initial known point) and an azimuth based on magnetic north.

  On the other hand, the above-described measurement contents are registered in the survey data storage unit 3 by public coordinates as shown in FIG. In the survey data storage unit 3, the survey line 2 and the survey point 1 are respectively stored in a database. In these databases, in addition to the above-described measurement contents, whether or not the coordinate value of the survey point 1 is an initial known point is determined. Although not shown, the distances on the XYZ coordinates of the survey line 2, the survey line 2 to which the survey point 1 belongs, the point names of other survey points 1 connected by the survey line 2, and the true north of the survey line 2 are referred to. The azimuth angle and the intersection angle between the survey lines 2 and 2 are also registered. In this embodiment in which forest survey data is processed, since a GPS signal cannot be easily received by a plant that flourishes in the survey area, only a single known point is included as an initial known point in the survey network. It is.

  In the adjustment data storage unit 23, as shown in FIG. 6C, similarly to the above-described survey data storage unit 3, the survey line 2 and the survey point 1 are respectively stored in a database. A database is also created for the groups 32 and polygons. These databases include IDs of the survey line group 32 and polygons, a list of survey lines 2 included in the survey line group 32, a list of survey points 1 included in the survey line group 32, representative values of closing errors of the survey line group 32, and furthermore, As the attribute information of the polygon, the ID of the survey line group 32 constituting the polygon, its area and perimeter, the center of gravity coordinate, the time of undercutting and pruning, the representative value of the closing error of the survey line group 32 constituting the polygon, and the like. be registered.

  In the color table 12, a closing error range obtained by dividing the closing error value according to the surveying accuracy is stored in such a manner that different colors are associated with the respective ranges. Specifically, for example, as shown in FIG. 2, the closing error range includes −1, 0.05 or more, from 0.05 to 0.03, from 0.03 to 0.02, from 0.02 to 0. Up to 01, 0.01 or less can be set.

  The traverse survey result display device includes a coordinate conversion unit 17, a data registration unit 24, a pre-processing unit 4, a group extraction unit 25, a survey line evaluation unit 26, and a polygon extraction unit 8 which operate under the control of the control unit 20 described above. , A polygon error giving unit 9, a display position calculating unit 16, a display control unit 11, an attribute giving unit 27, and a quadrature unit 28, which constitute a calculating unit (not shown).

  The coordinate conversion unit 17 converts the contents of the survey consisting of the relative coordinates into the public coordinates registered in the survey data storage unit 3 as described above, and converts the public coordinates of the initial known point which is the starting point of the survey. Based on this, the coordinate values and the like of each measurement point 1 are converted from relative coordinates to geographic coordinates.

  The data registration section 24 is a section for registering survey contents and the like in a database in the survey data storage section 3 described above, and as described above, the coordinate values of the survey points 1 and the survey lines 2, which are not included in the measurement contents, as described above. The intersection angle between the two is calculated based on the measurement content, whether or not the point is an initial known point is registered, and the azimuth angle is corrected from magnetic north to true north.

  The pre-processing unit 4 narrows down the target of the closing error adjustment described above from the data in the survey data storage unit 3, searches the database of the measurement point 1, and searches for other measurement data connected through the associated measurement line 2. The station 1 having no plurality of points 1 is excluded from the processing target, and the remaining station 1 is extracted as the processing point 1 to be processed. The preprocessing unit 4 registers the extraction result in the survey line 2 database in the adjustment data storage unit 23 described above. If the survey point 1 to be excluded from the processing target is an initial known point, another survey point 1 of the survey line 2 to which the survey point 1 belongs is newly set as a known point.

  The group extraction unit 25 extracts a survey line group 32 forming a closed figure using the processing target measurement point 1 extracted by the preprocessing unit 4. The extraction of the survey line group 32 is performed by following the survey line 2 in a predetermined rotation direction from the known point until reaching another known point, and the initial known point is excluded from the processing target by the preprocessing unit 4 as described above. In this case, the known point newly set by the preprocessing unit 4 along with the exclusion processing is set as the first starting point, and the survey line 2 is sequentially traced in a predetermined rotation direction from this point to form a closed figure. And returns to the starting point, the constituent line 2 of the closed figure is extracted as a line group 32.

  In addition, the group extraction unit 25 repeats the extraction process by using the added known point as a new starting point by adding a new known point by the line estimation unit 26 as described later, and thereby More than one can be extracted. In the second and subsequent extractions, since there are a plurality of known points, the survey line group 32 forms a combined traverse in which the starting point and the arrival point are different known points, and the constituent survey line 2 is extracted. When the extraction of the line group 32 is completed, the group extracting unit 25 registers the ID of the extracted line group 32, its constituent line 2, and its constituent point 1 in the line group database in the adjustment data storage unit 23.

  The survey line evaluation unit 26 evaluates the closing error of the survey line group 32 extracted by the group extracting unit 25, and instructs re-measurement or distributes the closing error in accordance with the degree thereof, and distributes the survey error in the survey line group 32 in the survey line group 32. To a known point. The survey line evaluation unit 26 includes an error calculation unit 5 that calculates a closing error, a coordinate providing unit 30 that sets the measuring point 1 in the survey line group 32 to a known point when the degree of the closing error is small, and an instruction for remeasurement. And an intersection detection unit 31 that performs the operation.

  The error calculator 5 calculates a closing error relating to the above-described survey line group 32. The calculation of the closing error is for coordinates, for example, a known coordinate value of a known point which is an arrival point, and a survey coordinate value of an arrival point derived by a plurality of measurements from the starting point via the measuring point 1. Is determined by calculating the ratio of the difference to the total distance from the starting point to the arrival point.

  When the closing error calculated by the error calculating unit 5 does not exceed the predetermined threshold, the coordinate giving unit 30 allocates the closing error to give coordinates to each of the measurement points 1 of the survey line group 32, The coordinate point is set as a known point. On the other hand, if the closing error exceeds the threshold value, an instruction to re-measure the line group 32 is output. For example, in this embodiment, when the threshold value is 0.05, that is, when the closing error exceeds 5%, the threshold value is set as a re-measurement target. When the above processing is completed, the coordinate assigning unit 30 determines whether the ID, assigned coordinate value, and coordinate assigned point of the measurement point 1 are known points in the measurement point 1 database in the adjustment data storage unit 23. Register

  It should be noted that, when the above-mentioned coordinate providing unit 30 registers the survey line 2 database in the adjustment data storage unit 23, each item such as the coordinate value of the measuring point 1 is registered by the above-described data registering unit 24 in accordance with the registered contents. Is done. At the time of registration, the data registration unit 24 calculates the azimuth angle, the elevation angle, the oblique distance, the respective distances on the XYZ coordinates, and the intersection angle between the survey lines 2 and 2 based on the new coordinates given to the survey line 2. calculate. In addition, among the closing errors of the measurement points 1 included in the line group 32, the largest one is registered as a representative value of the closing error for the line group 32.

  The intersection detection unit 31 determines whether or not the intersection between the survey lines 2 and 2 between the different survey line groups 32 and 32 has occurred as a result of the distribution of the closing errors performed by the coordinate providing unit 30 to all the survey line groups 32. Judgment is performed, and an instruction for re-measurement is output when intersection occurs. The determination of intersection can be made using any suitable existing algorithm of this type.

  The polygon extracting unit 8 extracts the unit polygon 7 which is a polygon constituting the minimum unit closed figure from the line network constituted by the plurality of line groups 32 constituted by the known points as described above. The polygon extracting unit 8 extracts a related line extracting unit 13 that extracts a line 2 starting from the above-described processing target point 1 and a polygon-constituting line 2 that forms the unit polygon 7 by combining the extracted line 2. A polygonal line extraction unit 14 and an output unit 15 for outputting a unit polygon 7 constituted by the polygonal configuration line 2 as a polygon to be processed.

  The related survey line extraction unit 13 is configured to determine whether or not the approach survey line 1 that enters the process target survey point 1 from another process subject survey point 1 is out of the survey subject survey point 1 to another process subject point. , The survey line 2 in which the angle (intersecting angle) measured in one of the predetermined rotation directions, clockwise or counterclockwise, is designated as the exit survey line 2, and the approach survey line for all the processing target survey points 1. 2 is associated with one exit line 2, in other words, a specific single exit line 2. As described above, by specifying the processing target point 1 as a reference at the time of extraction and specifying the rotation direction, detection of overlap of the survey line 2 due to a difference in the rotation direction is prevented, By selecting the smallest intersection angle of the survey line 2, the survey line 2 corresponding to the unit polygon 7 having the minimum area is detected without omission.

  The polygon survey line extraction unit 14 sequentially enters, for all the processing survey points 1, an entry survey line 2 for the processing survey point 1, an exit survey line 2 for the entry survey line 2, and a processing survey point 1 corresponding to the exit survey line 2. Then, the search is performed until the processing target station 1 after the search matches the processing target station 1 at the start of the search, and the polygon configuration survey line 2 is extracted. In the same manner as described above, on the basis of the processing target station 1 as a reference at the time of extraction, a search is made for the combination of the survey line 2 and the measuring point 1 until the same processing target station 1 is reached. The polygon configuration survey lines 2 covering all the polygons configured by combining a plurality of the polygons are detected without omission.

  The output unit 15 outputs, as a processing target polygon, the remaining polygons composed of the polygon-constituting survey lines 2 excluding the overlap due to the circular permutation of all the polygon-constituting survey lines 2. As described above, the entry / exit survey line 2 is extracted based on the processing target survey point 1, so that the polygon-constituting survey line 2 is detected in the same polygon as the number of the process subject survey point 1 in a redundant manner. . Therefore, the output unit 15 eliminates such overlap and associates each polygon with a single polygon-constituting survey line 2. When the above processing is completed, the output unit 15 registers the ID of the polygon and the ID of the survey line group 32 to which the polygon-constituting survey line 2 belongs as attribute information in the polygon database in the adjustment data storage unit 23. When polygon-configured survey lines 2 are formed by combining survey lines 2 belonging to different survey line groups 32, a plurality of IDs of the survey line groups 32 are registered.

  The polygon error giving section 9 gives an error representative value to the unit polygon 7 extracted by the polygon extracting section 8. This error representative value is a representative value of the closing error of the survey line group 32 to which the polygon constituting survey line 2 of the unit polygon 7 belongs, and corresponds to the representative value of the closing error with reference to the survey line group database in the adjustment data storage unit 23. It is registered as attribute information in the polygon database in association with the unit polygon 7. When the IDs of the plurality of measurement line groups 32 are registered in the unit polygon 7 as described above, for example, the maximum value among the representative values of the closing errors in the unit polygon 7 can be registered.

  The display position calculation unit 16 sets the display position by screen coordinates when displaying on the display unit 10 described above. The display position calculation unit 16 converts the geographical coordinates of the measurement points 1, the measurement lines 2, and the polygons into screen coordinates. Set the display position. The geographic coordinates can include not only the data in the adjustment data storage unit 23 but also the data in the survey data storage unit 3, that is, the data before adjustment of the closing error.

  The display control unit 11 controls the content and mode of the display when displaying on the display unit 10 described above. The display control unit 11 uses the calculation result of the above-described display position calculation unit 16 to color-change and superimpose an error by color-coding so that it is easy to compare the change of the public coordinate position of the survey line group 32 before and after adjusting the closing error. The display unit 33 includes a color classification display unit 34 for displaying the unit polygons 7 in colors according to the representative values of the closing errors of the unit polygons 7 with reference to the color table 12 described above. Further, for example, not only the measurement point 1, the measurement line 2, and the unit polygon 7 are displayed, but also the measurement coordinate value of the measurement point 1, the coordinate value after adjusting the closing error, and the attribute information of the unit polygon 7 are displayed. Alternatively, such information can be linked to the measurement point 1 and the unit polygon 7. Further, when a link is set to the unit polygon 7 as described above, the center of gravity of the unit polygon 7 is displayed, and a clickable area for the link can be set here.

  In addition, with respect to the instruction for re-measurement, the display control unit 11 can highlight the measurement point 1 where the closing error exceeds the threshold value or the measurement line 2 where the intersection is detected by color coding or the like. Furthermore, a plurality of maps such as a topographic map can be superimposed and displayed on the display of the measurement point 1 or the like by aligning with the public coordinates (see FIG. 9).

  The attribute assigning unit 27 registers various attribute information in the polygon database in the adjustment data storage unit 23 in association with the unit polygon 7. The attribute information also includes information such as the perimeter of the unit polygon 7 and the centroid position, and the attribute assigning unit 27 calculates and registers these with reference to the survey line 2 database and the like.

  The quadrature unit 28 calculates the area of the unit polygon 7, and is calculated using an appropriate existing algorithm of this kind. The calculated area is registered in the polygon database as attribute information in association with the corresponding unit polygon 7 via the attribute assigning unit 27 described above.

  The flow of data processing using the above traverse survey result display device will be described below. The data processing is started by inputting the results of forest surveying via the input / output unit 1522 as shown in FIG. 3 (step S1). As described above, the traverse survey result display device constituted by the notebook computer or the like is brought to the survey site, and forest survey is performed on several to several tens of survey points 1 before the above-described data input. The input data is obtained, for example, for a survey result of the relative coordinate system for one to several days, and may include public coordinates of an initial known point.

  Specifically, as shown in FIG. 15A, for example, the input data is obtained by converting the survey data into a file in an appropriate file format for each survey line 2, in other words, for each survey work unit. Can be used. In addition, in order to increase the efficiency of the process at the time of re-survey, which will be described later, a name that can identify before and after the survey work time can be given to each file. The names of the four files stored in the folder “0812” shown in FIG. 15 (a) were determined in the order from the first to the fourth on the same day in the survey made on August 12, 2013. The right side shows the data content actually recorded. The folder shown in the lower part of FIG. 14 stores the survey data files on August 12, 13, 19, 21 and September 18, 2013, respectively, and the "init" file is It records the public coordinates of an initial known point.

  The traverse survey result display device that has received the data input first performs an initial process (step S2). In the initial processing, the coordinate conversion unit 17 can convert from a relative coordinate system to an initial known point to a public coordinate system. After this initial processing, the survey result after coordinate conversion is registered in the survey data storage unit 3 by the data registration unit 24, and a database of the survey line 2 and the survey point 1 is constructed (step S3).

  Next, the survey line group 32 is extracted using the data in the survey data storage unit 3 (step S4). The process of extracting the survey line group 32 starts with the preprocessing unit 4 first extracting the processing target survey point 1. As shown in FIG. 4, extraction of the processing target survey point 1 is performed by detecting a survey line 2 (DANGLE survey line) in which the overlapping number of the start point or the end point is 1 (step S4-1), and the DANGLE survey line 2 is detected. Then, it is determined whether or not it includes an initial known point (step S4-2).

  As a result of the determination, if the initial known point is included, the measurement point 1 of the connection destination is newly set as a known point (step S4-3). Further, the DANGLE survey line 2 is excluded from the processing target (step S4-4). On the other hand, when the initial known point is not included, the DANGLE survey line 2 is simply excluded from the processing target (step S4-4). When the processing for the DANGLE line 2 detected as described above is completed, the detection operation is repeated until such a DANGLE line 2 is not detected (step S4-5).

  FIG. 7 graphically illustrates the above-described extraction processing of the target point 1 to be processed, where a black circle indicates the measurement point 1, a line segment indicates the measurement line 2, and a circle surrounded by the black circle indicates a measurement point. As for the number 1, the number located at the central portion in the longitudinal direction of the line segment indicates the number of the survey line 2, and the number surrounded by a double circle indicates that it is a known point. FIG. 7A shows a state before the processing, where only No. 1 is the only known point (initial known point) and No. 1 survey line 2, No. 2 survey line 2, and No. 15 survey line which do not constitute a closed figure. 2 and four DANGLE lines 2 of line 16. On the other hand, FIG. 7B shows the state after the processing, in which the four DANGLE survey lines 2 that do not constitute the above-mentioned closed figure are eliminated, and the third survey point 1 is newly set as a known point.

  Note that the third measurement point 1 is first converted into a known point by first determining that the first known point (initial known point) has no overlap with the other survey lines 2 and the overlapping number of the start point or the end point is 1. The second survey line 2 is excluded, and the second survey point 1 is newly set as a known point. Subsequently, the second survey line 2 having no overlap with the other survey line 2 at the second known point. Is excluded, and accordingly, the third measurement point 1 is newly set as a known point. On the other hand, at the third known point, the third survey line 2 and the sixth survey line 2 overlap, and thus the survey line 2 is not excluded.

  When the survey line 2 to be processed is extracted as described above, the group extraction unit 25 groups the combinations of the survey lines 2 from the known point to the known point again at the minimum intersection angle clockwise (step S4-6). In this embodiment in which forest surveying is performed using a single known point as a base, the extraction processing of the survey line group 32 is performed by grouping a combination of survey lines 2 forming a closed figure having a minimum area including the known point. start from. Thereafter, the process of extracting the survey line group 32 (step S4) is performed simultaneously and concurrently with the calculation and adjustment process of the closing error (step S5).

  First, after the first grouping process is completed as described above, the closing error is calculated by the error calculating unit 5 (step S5-1), and it is determined whether or not the calculated closing error exceeds a threshold value. The determination is made by the unit 30 (step S5-2). When the difference is not exceeded, the closing error is adjusted, and the measuring point 1 included in the survey line group 32 is set to a known point (step S5-3). On the other hand, if the closing error exceeds the threshold value, a re-measurement instruction is displayed on the display unit 10 and all data processing ends (step S5-5). The re-measurement can be started immediately by performing the above data processing in an external business. When the closing error is calculated as described above, the coordinate providing unit 30 records the coordinates in the adjustment data storage unit 23.

  The above-described series of extraction processing of the survey line group 32 is repeated until the known points increase in the survey line 2 to be processed, because new known points increase along with the grouping as described above. (Step S4-7). FIG. 8 is an image of the flow of this processing, in which the survey line 2 indicated by a solid line is a grouping target, and the third survey line forming a closing traverse by the first grouping process as shown in FIG. The second and fourth survey lines 2, the fifth survey line 2, and the sixth survey line 2 form a survey line group 32. FIG. 8B shows the second grouping process. In this case, the seventh line 8, the eighth line 2, and the ninth line 2 constituting the combined traverse are newly added to the line group. It becomes 32.

  When the grouping process is completed in this way, it is determined whether or not the survey lines 2 and 2 belonging to different survey line groups 32 intersect at a point other than the survey point 1 (step S5-4). Ends the closing error calculation and adjustment processing as it is, and when an intersection is found, displays a re-measurement instruction on the display unit 10 and ends all the data processing as well as the closing error calculation and adjustment processing. (Step S5-5).

  FIG. 9 shows an example in which an intersection between the survey lines 2 and 2 is found. FIG. 9A shows a case where the measurement target should be the 546 survey point 1 during the measurement work from the 154 survey point 1. This is due to the misunderstanding that the measurement point 1 of 545 was mistakenly set. On the other hand, in FIG. 7B, although there is no intersection at the stage of the survey result shown in FIG. 7A, the 17th survey line 2 and the 18th survey line 2 intersect due to the adjustment of the closing error thereafter. Showing things. As shown in these figures, on the display screen of the re-measurement instruction, the intersecting survey lines 2 are highlighted in bold characters or the like.

  FIG. 10A is an image of the state of the measurement point 1 and the like when the calculation and the adjustment processing (step S5) of the closing error are completed. Prior to the process of extracting the survey line group 32 shown in FIG. 7B (step S4), the known point is only the third survey point 1, and the variation of the position of the survey point 1 of the same number is also caused by the closing error. There is no positional relationship in which all the survey lines 2 are connected at the survey points 1 at both ends, but at this time, all of the survey points 1 are known points, and the dispersion of the positions of the survey points 1 is eliminated and all the survey lines 1 are eliminated. The measurement line 2 has a positional relationship of being connected at the measurement points 1 at both ends.

  In addition, FIG. 15B shows input data after the above-described re-survey, and a file to which a name indicating the same date is added is stored in the folder of the re-survey date of October 4. In this file, survey data obtained by re-survey is recorded. The input data after the re-survey is configured by adding the re-survey data to all the input data before the re-survey, and also includes inappropriate survey data that has caused the re-survey. For this reason, when the above data is input from the input / output unit 1522, the data registration unit 24 determines before and after the survey work time from the file name when storing the data in the survey data storage unit 3 and determines the same. The postscript priority processing is performed on the overlapping survey data for the survey line 2. As a result, the surveying data storage unit 3 does not store inappropriate surveying data whose surveying work time is earlier, but stores only the re-measurement data whose surveying work time is later. The input data after the re-survey is then processed in the same manner as normal survey data, so that a processing result reflecting the result of the re-survey can be obtained.

  Further, when the adjustment of the closing error is completed as described above, the polygon extracting unit 8 proceeds with the polygon extracting process (step S6). The polygon extraction process starts by extracting a combination of the entry / exit survey lines 2 for each survey point (node) 1 by the related survey line extraction unit 13 (step S6-1). FIG. 10B shows the contents of this processing, in which the survey line 2 entering the survey point 1 is defined as an entrance survey line 2 and the survey line 2 exiting from the survey point 1 is defined as an exit survey line 2. The case where the survey point 1 has entered the fifth survey point 1 as the approach survey line 2 has been described as an example. In this case, the exit line 2 from the No. 5 station 1 is a total of 3 of the No. 5 line 2, the No. 10 line 2 and the No. 9 line 2 except for the No. 4 line 2 which is the incoming line 2. The survey line 2 can be extracted as a candidate.

  Next, it is determined whether or not the combination of the entry survey line 2 and the exit survey line 2 consists of a pair having the smallest intersection angle in the clockwise direction (step S6-2). In this determination, as shown in FIG. 10B, if the exiting survey line 2 is the fifth survey line 2, the intersection angle is θ1, if the exit survey line 2 is the tenth survey line 2, the intersection angle is θ2, and the ninth survey line 2 And the intersection angle is θ3, the fifth survey line 2 corresponding to the minimum intersection angle θ1 is determined as the exit survey line 2. When the narrowing is completed based on such a determination result (step S6-3), a combination of the entrance survey line 2 and the exit survey line 2 shown in FIG. 11A is extracted. FIG. 12 is an image of the combination extraction described above, and an entry / exit survey line 2 that can constitute an individual polygon inside the survey network is detected clockwise by determining the minimum intersection angle.

  After that, the entry survey line 2 and the exit survey line 2 extracted as described above are combined, and the polygon survey line extraction unit 14 extracts all combinations of the survey lines 2 forming the section (polygon) (step S6-4). This extraction can be performed by searching for a route from the processing target point 1 as a starting point to the same processing target point 1 by traversing the survey line 2 and performing clockwise or counterclockwise rotation, minimum intersection angle, By combining the maximum conditions, an appropriate existing algorithm used for the route search can be used. FIG. 11B shows the result of the extraction.

  In addition, in this extraction result, the combination of the survey lines 2 constituting the section is calculated for each processing point 1 to be processed, and the section is detected as being duplicated. S6-5), the extraction of the survey line 2 constituting the section, that is, the polygon constituting survey line 2 is completed.

  Further, when the polygon configuration survey line 2 is extracted as described above, the area of the polygon is calculated by the quadrature unit 28, and the peripheral length and the centroid position of the polygon are calculated by the attribute providing unit 27 (step S6-). 6). In addition, the polygon error giving unit 9 searches for the closing errors of all the measurement points 1 included in the polygon, and determines the representative value of the closing errors of the polygon.

  In addition, in this embodiment, since attribute information is not set for a polygon formed by the outer edge of the survey network, the polygon configuration survey line 2 forming the counterclockwise survey line group 32 is excluded from the processing target here. After that (step S6-7), the output unit 15 creates the unit polygon 7 constituted by the remaining polygon-constituting survey lines 2, and the quadrature unit 28 and the attribute assigning unit 27 If the polygon error giving unit 9 sets the representative value of the closing error of the unit polygon 7 as attribute information (step S6-8), the polygon extraction processing is completed. In addition, it is also possible to add new attribute information to the unit polygon 7 by operating the keyboard by the attribute assigning unit 27. In this embodiment in which forest surveying for forest management is performed, undercutting and pruning are performed. When the work area corresponding to the forest group or the like is polygonized, these work times are registered in the attribute information, and the progress of the work is managed together with the position information of the unit polygon 7. Further, the above-described polygon-structured survey line 2 can be narrowed down by an existing algorithm that processes the clockwise direction as a positive number and the counterclockwise direction as a negative number when extracting the survey line group 4.

  Finally, display processing (step S7) is performed based on the above processing result, and the processing result is displayed on the display unit 10, whereby the data processing is completed. In the display process, the display control unit 11 appropriately scales the public coordinate system to display the above-described unit polygon 7 on the display unit 10, displays the measurement point 1 and the measurement line 2, or refers to the color table 12. A color corresponding to the representative value of the closing error can be given to these.

  FIG. 2 shows an example of the display screen, in which the measurement points 1, the measurement lines 2, and the unit polygons 7 are displayed, and the unit polygons 7 are given a color corresponding to a representative value of the closing error. In this display, the unit polygons 7 are displayed in different colors according to the degree of the closing error. FIG. 13 shows a clickable area linked to the attribute information of the unit polygon 7 at the position of the center of gravity of the unit polygon 7 indicated by a two-dot chain line while adding the display of the representative value of each closing error near the measuring point 1. Is added.

  FIG. 14A shows a case where a color corresponding to the closing error is added to the measuring point 1 in place of the unit polygon 7 described above. FIG. Are color-coded based on the geographical coordinates before and after the closing error is adjusted and superimposed. In addition, for example, it is also possible to display the unit polygons 7 in different colors according to the implementation status of the above-described undercutting and pruning.

  In the above embodiment, the closed figure at the outer edge of the survey network is not converted into a polygon because there is no use in forest management. However, the corresponding polygon configuration survey line 2 is excluded (step S6-8). By omitting the parentheses, it is possible to create polygons and set attribute information.

REFERENCE SIGNS LIST 1 survey point 2 survey line 3 survey data storage unit 4 preprocessing unit 5 error calculating unit 7 unit polygon 8 polygon extracting unit 9 polygon error giving unit 10 display unit 11 display control unit 12 color table 13 related survey line extracting unit 14 polygon survey line extracting unit 15 output unit 16 display position calculation unit 17 coordinate conversion unit

Claims (5)

The traverse survey result including the measurement coordinate values of the measurement points, the measurement points connected to the measurement lines connected to the measurement points, and information on the angles of intersection between the measurement lines is stored, and it is possible to refer to the given coordinates after error distribution for the measurement points. A survey data storage unit,
A preprocessing unit that sequentially searches for a survey point that does not have a composite connection to another survey point from the survey data storage unit and excludes it from the processing target, and extracts the remaining survey points as a processing target survey point,
An error calculation unit that calculates a closing error of each of the processing target measurement points,
A polygon extraction unit that extracts a unit polygon of a minimum area unit from a survey line network that divides the survey area by survey lines connecting processing target survey points;
A polygon error assigning unit that assigns the maximum value of the closing error of each measurement point forming each unit polygon to the corresponding unit polygon as an error representative value,
A display control unit that displays the assigned coordinates and the measurement line after the closing error distribution on the display unit so that the division by the error representative value can be identified for each unit polygon.
And a traverse survey result display device.   2. The traverse survey result display device according to claim 1, wherein the display control unit displays the polygon on a display unit by classifying the polygon by a color selected from a color table in which a color corresponds to a range of a closing error value. 3. The polygon extraction unit is configured such that, for an entering survey line that enters the processing target measurement point from another processing target measurement point, a clockwise or counterclockwise rotation is performed among the measurement lines exiting from the processing target measurement point to another processing target point. An associated survey line extraction unit that associates one exit survey line with the entrance survey line for all processing target points, specifying a survey line whose angle measured in one of the predetermined rotation directions around is the minimum,
For all the processing points to be processed, the approaching survey line for the processing target point, the exiting path for the entering path, and the processing point corresponding to the exiting path are sequentially processed. A polygonal line extraction unit that searches until a measurement point is found and extracts polygon-constituting lines,
3. The traverse according to claim 1, further comprising: an output unit configured to output a polygon formed by the remaining polygon-constituting lines excluding the overlap of the polygon-constituting lines extracted by the polygon permutation extracting unit in the circular permutation, as a processing target polygon. Survey result display device. A survey data storage unit that stores a traverse survey result including a measurement coordinate value of a survey point and a destination survey point of a survey line connected to the survey point, and that can refer to the assigned coordinates after the closing error distribution for each of the survey points; ,
A display position calculation unit that calculates coordinates on the display unit of a measurement point based on each of the measurement coordinate values and the provided coordinates after the closing error distribution,
A traverse survey result display device comprising: a display control unit that displays measurement points based on each of the measurement coordinate values and the assigned coordinates after the closing error distribution on the same screen of a display unit so that both can be identified. The measurement coordinate value of each of the measurement points, or a given coordinate value after closing error distribution, having a coordinate conversion unit for converting from a relative coordinate system based on an initial known point to a public coordinate system,
The traverse survey result display device according to any one of claims 1 to 4, wherein the display control unit displays each survey point together with spatial information other than a survey area displayed in a public coordinate system.

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