JP6655438B2 - Traverse survey data processing device - Google Patents

Description

  The present invention relates to a traverse survey data processing device.

  As a traverse survey data processing device capable of adjusting a closing error, a device described 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.

JP 2003-337023 A

  However, in the above conventional example, when a traverse survey is performed to a state where a closing error can be calculated, since a closing error is only calculated by inputting a survey result up to that time at a survey site, a multiple order closing error is calculated. The surveying work cannot be progressed all at once until the situation that includes it, the surveying work efficiency is poor, and when calculating the closing error, the operator specifies the surveying result to be the original, that is, the material for calculating the closing error itself There is a drawback in that it requires time and effort.

  SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned drawbacks, and has as its object to provide a traverse survey data processing apparatus capable of improving surveying work efficiency and calculating a closing error by a simple operation. .

According to the invention, the object is
Survey data storage for storing the traverse survey result including the measurement coordinate value of the survey point 1, the connection point 1 of the survey line 2 connected to the survey point 1, and the azimuth of the survey line 2 or the intersection angle between the survey lines 2 and 2. Part three,
A group extraction unit 5 that extracts two or more continuous survey lines 2 starting and ending at two known points as a survey line group 4;
A closing error is calculated for the line group 4, and if the closing error exceeds a predetermined threshold, a re-measurement instruction is output. If the closing error does not exceed the threshold, the closing error is distributed and the A survey line evaluation unit 6 that gives coordinates to each of the measurement points 1 and uses the coordinate provision points as known points;
Achieved by providing a traverse survey data processing apparatus having a control unit 7 for sequentially giving coordinates to survey points 1 by a group extracting unit 5 and a survey line evaluating unit 6 until there are no more unknown points in the survey data storage unit 3. Let it.

  According to the present invention, the calculation of the closing error by the survey line evaluation unit 6 is performed on the survey line group 4 extracted from the traverse survey result by the group extraction unit 5. If the calculated closing error is within an allowable range that satisfies a predetermined accuracy, the survey line evaluation unit 6 distributes the survey coordinates to the survey points 1 in the survey line group 4 to correct the measurement coordinate values. Are treated as known points having corrected coordinate values. On the other hand, when the closing error exceeds the allowable range, a re-measurement instruction is output from the survey line evaluation unit 6.

  The extraction of the survey line group 4 by the group extraction unit 5 and the calculation of the closing error by the survey line evaluation unit 6 are performed in the survey data storage unit 3 for storing the traverse survey result, which is not a known point but an unknown point. Repeat until 1 is gone. In the surveying data storage unit 3, the traverse survey results are measured coordinate values of the surveying point 1, the connecting point 1 of the surveying line 2 connected to the surveying point 1, and the azimuth of the surveying line 2 or the intersection angle between the surveying lines 2 and 2. An appropriate number of information is included, and the line group 4 extracted by the group extracting unit 5 is composed of two or more continuous line 2 starting and ending at two known points.

  Specifically, for example, when the survey result of the polygonal network of the connected polygonal system including the closed figure is stored in the survey data storage unit 3, first, two known points, in other words, the position coordinates are obtained before the survey. Two or more continuous survey lines 2 starting and ending at the known initial known point are extracted by the group extracting unit 5 as an initial survey line group 4. Next, a closing error is calculated for the initial line group 4 by the line evaluation unit 6, and when the closing error exceeds a predetermined threshold value, a re-measurement instruction is issued. On the other hand, if the difference does not exceed the predetermined threshold, a closing error is distributed to each of the measurement points 1 of the initial measurement line group 4, and thereafter, this error distribution point is further set as a new known point, and this is set as the start and end points. Any two or more continuous survey lines 2 are extracted as a secondary survey group 4 by the group extracting unit 5 and processed in the same manner as the above-described initial survey group 4. Thereafter, similarly, the extraction of the survey line group 4 and the like are sequentially repeated until the survey point 1 as an unknown point disappears.

  Therefore, according to the present invention, since the survey line group 4 which is a unit of calculation of the closing error by the survey line evaluation unit 6 is extracted from the traverse survey result by the group extracting unit 5, the measurement of the quantity including the multiple order closing errors is performed. Improve the surveying work efficiency by progressing the surveying work at once because the closing error can be well calculated from the results, and it is not necessary to adjust the amount and timing of the surveying result for the calculation of the closing error. Can be. In addition, when calculating the closing error, the worker only needs to store the traverse survey result in the survey data storage unit 3, so that no labor is required.

  In the traverse survey, in addition to a single-track system in which initial known points are arranged at both ends to connect a new point with one line, a single initial known point such as a closed polygon system may be sufficient. In this regard, when the traverse survey result in the survey data storage unit 3 includes only one initial known point, the group extraction unit 5 determines whether the survey point 1 connected to the initial known point or the initial known If the survey line 2 forming a closed figure having a point at the start and end points is extracted as the survey line group 4, it is possible to process results such as forest surveys in which a plurality of initial known points are difficult to expect.

  In the traverse survey (polygon survey), a survey network composed of a polygonal line and a polygon including an initial known point and a survey point 1 is set, and the position of a new point is set on the condition of a side length and an intersection angle obtained by measurement by a total station. In general, the side length is measured by a tape measure, and the intersection angle can be specified by measuring the direction of the side with a magnetic needle, so-called compass surveying using such a measuring method. It can be realized by using the results.

  In addition, the extraction of the survey line group 4 by the group extraction unit 5 is performed for all combinations of the survey lines 2 satisfying the condition of two or more continuous survey lines 2 starting from two known points and included in the traverse survey result. It is also possible to search for a combination of the survey lines 2 by brute force search. However, the group extraction unit 5 obtains the survey line 2 by following the survey line 2 from a known point in a predetermined rotation direction until reaching another known point. If the combined traverse to be extracted is extracted as the line group 4, the extraction efficiency is improved.

  The results of processing by the above traverse survey data processing device are confirmed sequentially with the progress of the surveying work at the surveying site as in the conventional example described above, and the surveying work and the closing error calculation work and the like are performed as outside work and inside work. The entire work can be efficiently and simultaneously proceeded as compared with the case where the work is divided into two groups. Thus, for example, even when the re-measurement instruction is output because the above-described closing error exceeds a predetermined threshold, it does not take much trouble to start the re-measurement.

  In addition, in forest surveying, the visibility is poor, and GPS signals can be received, and there is little expectation that it will be useful for identifying the location. Therefore, it is easy for workers to misunderstand the location and measure the parcels. Therefore, when the survey line 2 in the survey line group 4 extracted by the group extracting unit 5 intersects the survey line 2 in the other survey line group 4 at a position other than the survey point 1, the measurement is performed again. When an instruction is output and configured, it is possible to efficiently find a surveying error by using the intersection of the survey lines 2 that does not occur when measuring a section.

In addition, the above-described re-measurement instruction can indicate the target survey line 2 or the survey point 1 by their names.
A display unit 8 for displaying the measurement points 1 and 2 and
When the traverse survey data processing device is configured to include the survey line 2 or the measurement point 1 as the remeasurement instruction target when the remeasurement instruction is output, the traverse survey data processing device may be configured as described above. , The position to be re-measured can be easily grasped visually. When the confirmation is made at the survey site as described above, it becomes easier to understand.

  Furthermore, the display control unit 9 displays the survey line 2 or the survey point 1 on the same screen in an identifiable manner based on both the assigned coordinates in the survey line evaluation unit 6 and the measured coordinate values in the survey data storage unit 3. When the error display unit 10 is provided, the systematic error included in the closing error can be easily grasped.

In addition, it has a coordinate conversion unit 11 for converting the measured coordinate values from a relative coordinate system based on an initial known point to a public coordinate system,
If the display control unit 9 displays each survey point 1 together with the spatial information other than the survey area displayed in the public coordinate system, it helps in grasping 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 data processing apparatus capable of improving the surveying work efficiency and calculating the closing error with a simple operation. Can be shortened.

It is a hardware block diagram of the traverse survey data processing 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 traverse survey data processing according to the present invention. In this embodiment, forest survey data is processed. As shown in FIG. 1, a traverse survey data processing device includes a control unit 7 including a central processing unit, a storage unit 20 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 21 composed of an LCD and a display unit 8 composed of an LCD.

  The storage unit 20 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 for associating 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 posted in the field book are input to the processing device by keyboard input or the like. When the survey is performed using a total station, the data can be taken into the processing device by 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 22, 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, and in addition to these, the survey line The group 4 and the polygon 24 are also stored in a database. These databases include IDs of the survey line group 4 and the polygon 24, a list of survey lines 2 constituting the survey line group 4, a list of survey points 1 included in the survey line group 4, representative values of closing errors of the survey line group 4, and Are attribute information of the polygon 24, such as the ID of the survey line group 4 constituting the polygon 24, its area and perimeter, the barycentric coordinate, the timing of undercutting and pruning, and the closing error of the survey line group 4 constituting the polygon 24. Representative values are registered.

  In the color table 23, a closing error range obtained by dividing the closing error value according to the surveying accuracy is stored in such a manner that each range is associated with a different color. 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.

  Further, the processing device includes a coordinate conversion unit 11, a data registration unit 25, a pre-processing unit 26, a group extraction unit 5, a survey line evaluation unit 6, a polygon extraction unit 27, a polygon error unit, which operate under the control of the control unit 7. It has an assigning section 28, a display position calculating section 29, a display controlling section 9, an attribute assigning section 30, and a quadrature section 31. These form an operating section (not shown).

  The coordinate conversion unit 11 converts the contents of the survey consisting of the relative coordinates into 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 unit 25 stores the survey contents and the like in a database in the above-described survey data storage unit 3 and registers them. As described above, the coordinate values of the survey points 1 and the survey lines 2, 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 26 narrows down the object of the above-described closing error adjustment 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 via the survey line 2 to which the measurement point 1 belongs. 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 26 registers the extraction result in the survey line 2 database in the adjustment data storage unit 22 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 extracting unit 5 extracts the survey line group 4 forming the closed figure using the processing target measuring point 1 extracted by the pre-processing unit 26. The extraction of the survey line group 4 is performed by following the survey line 2 from the known point in a predetermined rotation direction until reaching another known point, and the initial known point is excluded from the processing target by the preprocessing unit 26 as described above. In this case, the known point newly set by the pre-processing unit 26 along with the exclusion processing is set as the first starting point, and the survey line 2 is sequentially traced in the predetermined rotation direction from this point to form a closed figure. Returning to the starting point, the constituent survey line 2 of the closed figure is extracted as a survey line group 4.

  In addition, the group extraction unit 5 repeats the extraction process using the added known point as a new starting point by adding a known point by the line estimation unit 6 as described later, thereby obtaining the line group 4. More than one can be extracted. In the second and subsequent extractions, since there are a plurality of known points, the survey line group 4 forms a combined traverse in which the starting point and the arrival point are different known points, and the constituent survey lines 2 are extracted. When the extraction of the survey line group 4 is completed, the group extracting unit 5 registers the ID of the extracted survey line group 4, its constituent survey line 2, and its constituent survey point 1 in the survey line group database in the adjustment data storage unit 22.

  The survey line evaluation unit 6 evaluates the closing error of the survey line group 4 extracted by the group extracting unit 5, and instructs a re-measurement or distributes the closing error according to the degree thereof, and assigns the measurement points 1 in the survey line group 4 to the measurement points. To a known point. The survey line evaluation unit 6 includes an error calculation unit 32 that calculates a closing error, a coordinate providing unit 33 that sets the measuring point 1 in the survey line group 4 to a known point when the degree of the closing error is small, and an instruction for remeasurement. And an intersection detection unit 34.

  The error calculator 32 calculates a closing error for the above-described survey line group 4. 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 32 does not exceed the predetermined threshold, the coordinate providing unit 33 allocates the closing error to each of the measurement points 1 of the survey line group 4 and assigns the coordinates. 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 4 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 33 checks 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 22. Register

  It should be noted that, when the above-described registration by the coordinate providing unit 33 is performed on the survey line database in the adjustment data storage unit 22, each item such as the coordinate value of the measurement point 1 is registered by the above-described data registration unit 25 in accordance with the registered contents. You. At the time of registration, the data registration unit 25 determines the azimuth angle, elevation angle, oblique distance, each distance on the XYZ coordinates, and the intersection angle between the survey lines 2 and 2 based on the new coordinates assigned to the survey line 2. calculate. In addition, among the closing errors of the measurement points 1 included in the line group 4, the largest one is registered as a representative value of the closing error for the line group 4.

  The intersection detection unit 34 determines whether or not the intersection between the survey lines 2 and 2 between the different survey line groups 4 has occurred as a result of the distribution of the closing error performed by the coordinate providing unit 33 to all the survey line groups 4. When the intersection occurs, an instruction for re-measurement is output. The determination of intersection can be made using any suitable existing algorithm of this type.

  The polygon extracting unit 27 extracts a unit polygon 24 that is a polygon 24 that forms a minimum unit closed figure from a line network composed of a plurality of line groups 4 formed of known points as described above. The polygon extraction unit 27 extracts a related line extraction unit 35 that extracts the line 2 starting from the above-described processing point 1 and a polygon-constituting line 2 that forms the unit polygon 24 by combining the extracted line 2. A polygonal line extraction unit 36 for performing the processing, and an output unit 37 for outputting the unit polygon 24 constituted by the polygonal configuration line 2 as the polygon 24 to be processed.

  The related survey line extraction unit 35 is configured to determine, for the entry survey line 2 that enters the processing survey point 1 from another processing survey station 1, of the survey line 2 that exits from the processing survey station 1 to another processing survey 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 24 having the minimum area is detected without omission.

  The polygon survey line extraction unit 36 sequentially performs, 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 line 2 covering all the polygons 24 configured by combining a plurality of the polygons is detected without omission.

  The output unit 37 outputs, as the processing target polygon 24, the polygon 24 formed by the remaining polygon constituent survey lines 2 excluding the overlap due to the circular permutation of all the polygon constituting survey lines 2. As described above, the entrance / 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 24 as the number of the process subject survey point 1 in a redundant manner. You. Therefore, the output unit 37 eliminates such duplication, and associates each polygon 24 with a single polygon-constituting survey line 2. When the above processing is completed, the output unit 37 registers the ID of the polygon 24 and the ID of the line group 4 to which the polygon-constituting line 2 belongs as attribute information in the polygon database in the adjustment data storage unit 22. When the polygon-constituted survey line 2 is configured by combining the survey lines 2 belonging to different survey line groups 4, a plurality of IDs of the survey line group 4 are registered.

  The polygon error giving unit 28 gives an error representative value to the unit polygon 24 extracted by the polygon extracting unit 27. This error representative value is a representative value of the closing error of the line group 4 to which the polygon-constituting line 2 of the unit polygon 24 belongs, and corresponds to the representative value of the closing error with reference to the line group database in the adjustment data storage unit 22. The attribute information is registered as attribute information in the polygon database in association with the unit polygon 24. When the IDs of the plurality of survey line groups 4 are registered in the unit polygon 24 as described above, for example, the maximum value among the representative values of the closing errors in the unit polygon 24 can be registered.

  The display position calculation unit 29 sets the display position on the display unit 8 based on the screen coordinates when displaying the data on the display unit 8. The display position calculation unit 29 converts the geographic coordinates of the measurement points 1, the measurement lines 2, and the polygons 24 into screen coordinates. , Set the display position. The geographic coordinates can include not only the data in the adjustment data storage unit 22 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 9 controls the content and mode of the display when displaying on the display unit 8 described above. The display control unit 9 uses the calculation result of the above-described display position calculation unit 29 to color-change and superimpose and display the change of the public coordinate position of the survey line group 4 before and after the adjustment of the closing error so as to make it easy to compare. The display unit 10 includes a color classification display unit 38 that refers to the color table 23 and displays the unit polygons 24 in colors according to the representative values of the closing errors of the unit polygons 24. Further, for example, not only the display of the measurement point 1 and the measurement line 2 and the unit polygon 24, 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 24 are displayed together. Alternatively, such information can be linked to the measurement point 1 and the unit polygon 24. Further, when a link is set to the unit polygon 24 as described above, the center of gravity of the unit polygon 24 is displayed, and a clickable area for the link can be set here.

  In addition, the display control unit 9 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 with respect to the re-measurement instruction. 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 30 registers various attribute information in the polygon database in the adjustment data storage unit 22 in association with the unit polygon 24. The attribute information also includes information such as the perimeter of the unit polygon 24 and the centroid position. The attribute assigning unit 30 calculates and registers these with reference to a survey line database or the like.

  The quadrature section 31 calculates the area of the unit polygon 24, 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 24 via the attribute assigning unit 30 described above.

  The flow of data processing using the above traverse survey data processing device will be described below. The data processing is started by inputting the results of forest surveying via the input / output unit 21 as shown in FIG. 3 (step S1). As described above, the processing device constituted by the notebook computer or the like is brought to the surveying site, and forest surveying is performed on several to several tens of survey points 1 prior to the 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 processing device that has received the data input first performs an initial process (step S2). In the initial processing, the coordinate conversion unit 11 can convert from a relative coordinate system to an initial known point to a public coordinate system. When this initial processing is completed, the survey result after coordinate conversion is registered in the survey data storage unit 3 by the data registration unit 25, and a database of the survey line 2 and the survey point 1 is constructed (step S3).

  Next, the survey line group 4 is extracted using the data in the survey data storage unit 3 (step S4). The extraction processing of the survey line group 4 starts by first extracting the processing target measurement point 1 by the preprocessing unit 26. 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 extracting unit 5 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 based on a single known point, the extraction process of the survey line group 4 is to group the combinations of the survey lines 2 forming the closed figure having the minimum area including the known point. start from. Thereafter, the process of extracting the survey line group 4 (step S4) is performed 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 32 (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 33 (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 4 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 8 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 33 records the coordinates in the adjustment data storage unit 22.

  The above-described series of extraction processing of the survey line group 4 is repeated until all the survey points 1 included in the survey line 2 to be processed become known points because the number of known points newly increases 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 constitute a survey line group 4. 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 4.

  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 4 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 8 and ends all 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 4 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 21, the data registration unit 25 determines before and after the survey work time from the file name when storing the data in the survey data storage unit 3. 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 27 proceeds with the process of extracting the polygon 24 (step S6). The polygon 24 extraction process starts by extracting a combination of the entry / exit survey lines 2 for each measurement point (node) 1 by the related survey line extraction unit 35 (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 the entrance / exit survey line 2 that can constitute each polygon 24 inside the survey network is detected clockwise by the determination of 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 36 extracts all combinations of the survey lines 2 forming the section (polygon 24) (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, a combination of the survey lines 2 constituting the section 24 is calculated for each processing point 1 to be processed, and the section 24 is detected to be duplicated. (Step S6-5), the extraction of the survey line 2 constituting the section 24, that is, the polygon constituting survey line 2 is completed.

  Further, when the polygon-constituting survey line 2 is extracted as described above, the area of the polygon 24 is calculated by the quadrature unit 31, and the peripheral length and the centroid position of the polygon 24 are calculated by the attribute assigning unit 30 (step). S6-6). Further, the polygon error giving unit 28 searches for the closing errors of all the measurement points 1 included in the polygon 24 to determine the representative value of the closing errors of the polygon 24.

  In addition, in this embodiment, since attribute information is not set for the polygon 24 formed by the outer edge of the survey network, the polygon-constituting survey line 2 forming the counterclockwise survey line group 4 is excluded from the processing target here. After the exclusion (step S6-7), the output unit 37 creates the unit polygon 24 constituted by the remaining polygon constituent survey lines 2, and the quadrature unit 31 and the attribute assigning unit 30 apply the unit polygon 24 to the unit polygon 24. If the area, the perimeter, and the like are set, and the representative value of the closing error of the unit polygon 24 is set as attribute information by the polygon error applying unit 28 (step S6-8), the polygon extraction processing is completed. In addition, it is also possible to add new attribute information to the unit polygon 24 by operating the keyboard by the attribute assigning unit 30. In this embodiment for performing forest surveying for forest management, 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 24. 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 results, and when the processing results are displayed on the display unit 8, the data processing is completed. In the display process, the display control unit 9 appropriately scales the public coordinate system to display the above-described unit polygon 24 on the display unit 8, displays the measurement point 1 and the measurement line 2, or refers to the color table 23. A color corresponding to the representative value of the closing error can be given to these.

  FIG. 2 is an example of a display screen, in which the measurement points 1, the measurement lines 2, and the unit polygons 24 are displayed, and a color corresponding to the representative value of the closing error is given to the unit polygons 24. In this display, the unit polygons 24 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 24 at the position of the center of gravity of the unit polygon 24 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 24 described above, and FIG. Are color-coded based on the geographical coordinates before and after the closing error is adjusted and superimposed. In addition, for example, the unit polygons 24 can be displayed in different colors depending on 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 survey line group 5 group extraction unit 6 survey line evaluation unit 7 control unit 8 display unit 9 display control unit 10 error display unit 11 coordinate conversion unit

Claims (7)

A survey data storage unit that stores traverse survey results including measurement coordinate values of survey points, connected survey points of survey lines connected to the survey points, and azimuth angles of survey lines or intersection angles between survey lines,
A group extraction unit that extracts two or more continuous survey lines starting and ending at two known points as a survey line group;
A closing error is calculated for the line group, and if the closing error exceeds a predetermined threshold, a re-measurement instruction is output. A survey line evaluation unit that assigns coordinates to points and sets the coordinate assignment points as known points,
A traverse survey data processing device having a control unit for sequentially giving coordinates to survey points by a group extracting unit and a survey line evaluating unit until there is no unknown point in the survey data storage unit.   When the traverse survey result in the survey data storage unit includes only one initial known point, the group extraction unit closes the survey point connected to the initial known point or ends at the initial known point. The traverse survey data processing device according to claim 1, wherein the survey lines forming the figure are extracted as a survey line group.   The traverse survey data processing device according to claim 1, wherein the group extraction unit extracts a combined traverse obtained by following a survey line from a known point in a predetermined rotation direction until reaching another known point as a survey line group.   4. The survey line evaluation unit outputs a re-measurement instruction when a survey line in a survey line group extracted by the group extracting unit intersects a survey line in another survey line group at a position other than a measurement point. Traverse survey data processing equipment. A display unit for displaying the measurement points and the measurement lines,
The traverse survey data processing device according to any one of claims 1 to 4, further comprising: a display control unit that highlights a survey line or a measurement point of the remeasurement instruction target when the remeasurement instruction is output.   6. The display control unit according to claim 5, further comprising: an error display unit that displays the measurement line or the measurement point on the same screen so as to be identifiable based on both the assigned coordinates in the measurement line evaluation unit and the measurement coordinate values in the survey data storage unit. A traverse survey data processing device as described. A coordinate conversion unit that converts the measured coordinate value from a relative coordinate system based on an initial known point to a public coordinate system,
The traverse survey data processing device according to claim 5, wherein the display control unit displays each survey point together with spatial information other than the survey area displayed in a public coordinate system.

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