JP2001084303A - Official map correction system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct the polygon data of an official map by utilizing a positioning system on the spot of a meeting for establishing a land boundary line. SOLUTION: In a notebook type personal computer 9, the polygon data 10 of the official map read by a scanner and a numerical information making software 12 for performing the change of the lot boundary point coordinates of the officinal map and area display after lot boundary point coordinate change, etc., are stored. On the spot of the meeting for establishing the land boundary line, a desired lot boundary point 11 is selected while displaying the graphic of the polygon data of the official map on the display of the notebook type personal computer 9, the position of the spot equivalent to the selected lot boundary point is measured by a real time kinematic - global positioning system and the position information is inputted to the notebook type personal computer 9. The numerical information making software 12 changes the coordinates of the lot boundary point, changes and displays the graphic of the official map based on the change of the coordinates of the lot boundary part on the display of the notebook type personal computer 9 and also displays the area of the graphic after the coordinate change. When attendants agree with data correction, correction data are established as the data of the official map.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for correcting official map data converted into polygons.

[0002]

2. Description of the Related Art At present, some municipalities are converting public maps stored at a registry office into numerical information and utilizing the data, but it is still possible to solve the difference between the public maps and the current state maps. Not. In addition, the reversal of the property tax valuation and the published price has not been solved. In order to convert public maps into numerical information, a public diagram stored in a registry is read by a scanner, and rasterization, vector conversion, and polygon conversion are being performed. In the correction of the data of the public map, the data measured at the site is brought back to the office, and based on this data, the numerical information data of the public map read by the scanner is changed at the office.

[0003]

In the transaction of land and the work involving land, the most important thing is the area of the land, and the area described in the registry (expressing it as a form) When there is a difference between the actual figure and the actual area, very important problems such as taxes arise. Therefore, when modifying the data of the official map, the attendance and consent of the parties such as the landowner at the site of the survey is required, and the data cannot be changed unnecessarily. However, at the witness site, it is possible for the parties to visually confirm the comparison of the area in the registry with the area after the change, the area of adjacent land after the data change, or the change in the terrain. It can be said that the consent can be easily obtained from the parties if this can be expressed, but such work is not currently performed on the spot.
Therefore, there was a problem that the work of correcting the official map was not performed efficiently. An object of the present invention is to solve the above problems.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a personal computer comprising: a polygon data of a public figure read by a scanner; It stores numerical information software for performing area display and the like afterwards, selects a desired brush boundary point while displaying the figure of the polygon data of the official map on the display of a personal computer at the site, and selects a desired brush point by the positioning system. The position of the place corresponding to the selected brush point is measured, the position information is input to a personal computer to change the coordinates of the brush point, and based on the change in the coordinates of the brush point on the display. And the area after the coordinate change is displayed by changing the figure of the official map by using the RTK-GP using the electronic reference point.
S.

[0005]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, 1
Is an RTK-GPS (Real Time Kinematic-Global Positioning System), which performs relative positioning of the mobile station (moving point) 3 with respect to the fixed station (reference point) 2.

The fixed station 2 constitutes an electronic reference point, and the fixed station 2
GPS antenna 4 of the mobile station 3
The radio wave from the GPS satellite 6 is received. The fixed station 2 calculates the phase information of the observed radio wave from the GPS satellite 6 and the pseudo distance,
The signal is transmitted to the mobile station 3 by the DMCA radio via the control station 7 which is a relay station. The built-in processor of the receiver 8 of the mobile station 3 processes these signals, and calculates and outputs the position of the mobile station 3, that is, the position of the portable GPS antenna 5. In the RTK-GPS 1, the principle of measuring the position of the mobile station 3 and outputting it from the receiver 8 is publicly known, and therefore detailed description thereof is omitted.

The output section of the receiver 8 is connected to the input section of a notebook personal computer 9 brought to the site,
The configuration is such that the position coordinates of the GPS antenna 5 can be input to the notebook computer 9 online. The storage device of the notebook personal computer 9 stores polygon data 10 of a public figure and numerical information software 12. The numerical information conversion software 12 has functions such as raster / vector conversion, polygon conversion, and data correction. Official map polygon data 10
Is created by the following procedure.

First, a portable scanner which can read aluminum Kent paper is connected to the notebook personal computer 9, and these are brought to the registry. Next, the required public map is read by the scanner, and the image raster data of the public map is sequentially taken into the storage device of the notebook computer 9. Next, as shown in the flowchart of FIG. 5, when the raster file of the desired public map is opened from the captured public map by the numerical information software 12 of the notebook computer 9, the raster data of the public map is stored in the notebook computer 9. It is displayed on the display (step 1).

Next, the raster data is converted into vector data by the numerical information software 12 (step 2). As the procedure, the conversion setting conditions are determined by “parameter setting” on the display, and the “vector recognition of image” on the display is clicked to perform the vector conversion. Next, surface recognition (polygon conversion) is performed using the closed line as an image ground (step 3). Here, a polygon is a polygon that represents an area of surface information with vector data.

Next, unnecessary lines, such as characters, symbols, dust, etc., generated when the mouse is operated to perform the vector conversion are deleted (step 4). Next, the vertex of the vector generated by setting the vector conversion condition is corrected (step 5). For example, when the joining points of the three polygons are shifted, the vertices of the other two polygons are matched with the polygon points of one polygon. Also, the road portion that has been polygonized because it is closed at the image base is not subjected to surface recognition (polygon). This is called polygon polyline conversion.

Next, each polygon is colored (set a polygon layer) to set a polygon. Up to 257 polygon layers can be registered in one group, and up to 32 groups can be grouped. After the above setting is completed, next, attributes are actually given to each polygon (step 6). Next, the operation of correcting a public figure will be described with reference to the flowchart of FIG.

First, numerical information software 12 and public map polygon data 10
, A notebook computer 9 stored in a storage device, and an RTK
-Bring in the mobile station 3 of the GPS 1 and prepare for correction work (step 1). When the preparation is completed, the official map correction work is started (step 2), and a brush (polygon) is displayed on the display of the notebook computer 9 as shown in FIG. 3 (step 3). Next, the operator uses the cursor to select a desired one of the stroke points on the displayed stroke boundary line.
(See FIG. 3).

Next, the GPS antenna 5 of the RTK-GPS 1 is placed at a local positioning point corresponding to the writing point 11, and the position of the positioning point is actually measured. Next, the key of the receiver 8 is operated to transfer the measured value of the RTK-GPS 1 to the notebook computer 9 (step 6). The data output unit of the receiver 8 of the RTK-GPS 1 and the notebook computer 9 can be made offline. In this case, the coordinate data displayed on the display of the receiver 8 is used as a key at the site of land positioning. Input to the notebook computer 9 by operation. As shown in FIG. 4, the numerical information software 12 displays the brush (polygon) (39-2) having the brush point 11 replaced with the new measured value (step 7).

Next, the positioning person in charge of the polygon (39-
2) and the area displayed at the same time (numerals 2215, 17 in the figure)
8) is compared to the defined area. Next, it is determined whether or not the display area is within the set error range (step 9). If the error is out of the error range, the witness is asked to determine whether or not to agree (step 10). If the witness does not agree, the process returns to step 5 and the positioning operation is performed again. When agreement by the witnesses is obtained in step 10 and when it is determined in step 9 that the display area is within the set error range, it is confirmed that the witnesses have agreed on the positioning result (step 11). ).

Next, it is assumed that a new measured value is established as determined data at the site (step 1).
2). Next, the positioning operator replaces the determined point (determined brush stroke point 11) with the determined symbol according to the instruction of the numerical information software 12 (step 13). Next, the operator displays and confirms a brush (polygon) on the display of the notebook computer 9. Next, the positioning operator determines whether or not to correct another brush boundary point (step 15), and if the determination is negative, ends the official map correction (step 17). If the determination is affirmative, the positioning operator moves the GPS antenna 5 to a position (actually, a stake) corresponding to the next writing point (step 16), and returns to step 4.

[0016]

As described above, according to the present invention, the terrain and area before and after the change of the public map can be displayed on the display of the personal computer at the site where the land boundary is determined. Can clearly recognize the situation. Therefore, it is possible to quickly determine whether or not the parties can agree to the data correction, and to efficiently correct the data of the official map.

[Brief description of the drawings]

FIG. 1 is an overall block diagram of a public figure correction system according to the present invention.

FIG. 2 is a flowchart showing the operation of the official map correction system of the present invention.

FIG. 3 is an explanatory diagram showing the operation of the present invention.

FIG. 4 is an explanatory diagram showing the operation of the present invention.

FIG. 5 is a flowchart showing an operation of converting a public map into a polygon.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 RTK-GPS (real-time kinematic-global positioning system 2 fixed station 3 mobile station 4 GPS antenna 5 GPS antenna 6 GPS satellite 7 control station 8 receiver 9 notebook personal computer 10 public figure polygon data 11 brush point 12 numerical value Computerization software

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C032 HB11 HB22 HC27 5B049 BB05 CC44 EE03 FF03 FF04 GG03 GG06 5B050 AA07 BA17 DA06 EA04 EA13 FA02 FA09 5E501 AA03 AC15 AC34 AC36 BA05 CA04 CB09 CB13 EA13 A02 EA05 EA05 EB05 BB08 CC07 EE04 GG02 HH05

Claims (2)

[Claims] 1. A personal computer comprising: a polygon data of a public figure read by a scanner; and numerical information software for changing the coordinates of the brush stroke point of the public map and displaying the area after the change of the coordinates of the brush stroke point. Store and select the desired writing point while displaying the figure of the polygon data of the official map on the display of the personal computer at the site, and measure the position of the place corresponding to the selected writing point by the positioning system. The position information is input to a personal computer to change the coordinates of the brush stroke point, and the graphic of the official map is changed and displayed on the display based on the change of the coordinates of the brush stroke point, and the area after the coordinate change is changed. A public map correction system characterized by displaying. 2. The official map correction system according to claim 1, wherein said positioning system is configured by RTK-GPS using an electronic reference point.