KR100782151B1 - Geodetic surveying method which can correct attribute data of digital map and check accuracy of attribute data - Google Patents

Abstract

A geodetic surveying method capable of correcting attribute data of a digital map and checking accuracy of the attribute data simultaneously with a geodetic survey is provided to correct the attribute data without checking agreement of the attribute data through a separate survey by directly using geodetic survey equipment, and calculate the accuracy of the attribute data to improve the reliability/usability of the digital map. A GIS(Geographic Information System) server receives the attribute data of a predetermined polygon included in the digital map from a digital map database of the geodetic survey equipment(S31). An attribute data processor of the geodetic survey equipment checks the agreement between the attribute data of the predetermined polygon and field information of a place in which the geodetic survey equipment is placed, and corrects the attribute data based on the information inputted through the input part if the attribute data is not agreed(S33). If an agreement checking value and the attribute data are corrected in the geodetic survey equipment, the corrected attribute data of the predetermined polygon is transmitted to the digital map database of the GIS server(S35). An accuracy calculator of the GIS server calculates the accuracy of the attribute data based on the received agreement value(S36).

Description

Geodetic Surveying Method Which Can Correct Attribute Data of Digital Map And Check Accuracy of Attribute Data}

The present invention relates to a geodetic survey method that can modify the attribute data of a digital map at the same time as geodetic survey, and to confirm the accuracy of the attribute data, and more particularly, while performing a geodetic survey using geodetic surveying equipment, It is about geodetic surveying methods that can modify the attribution data and verify the accuracy of the data.

In recent years, interest and use of geographic information systems are rapidly increasing in various sectors of society. Geographic Information System (GIS) is a computer-based system that uses and manages geographic data to solve space related problems. Even when GIS was first developed in the early 1960s, GIS was nothing more than a computer-based program for processing map data. Today, however, GIS is not only one of the most important academic research fields in itself, but is also actively applied in various sectors of society in combination with the latest Information Technology (IT).

The basic characteristic of GIS is that it can handle attribute information related to the location of objects in spatial, ie geographic space. Maps are the most efficient way of indicating the locations and properties of spatially distributed objects. Therefore, the most basic data in GIS construction is digital map. Numerical maps, unlike classical paper maps, are indexed by interpreting and numerically editing various terrain data obtained from survey maps, aerial photographs, and satellite images.

Specifically, the process of constructing a digital map goes through several complex processes. First, the paper map is digitized or scanned to form the resin map, and then various input errors are corrected. After converting the coordinates to the actual coordinate system according to the user's purpose through coordinate transformation, a topological structure is established to grasp the mutual position and correlation between spatial objects. Subsequently, the attribute data related to each figure data is inputted into the digital map which has established the topological structure.

In general, the input of attribute data is made by reading raw data such as aerial photographs or satellite images. However, it is difficult to ensure 100% accuracy of the attribution data input through reading, and therefore, the work of checking the conformity of the attribution data through the field survey is performed in parallel.

On the other hand, spatial data for the production of survey maps are typically collected by geodetic surveying. Geodetic surveying is a survey method that takes into account the shape, size, and curvature of the earth. It is used to survey relatively large areas and long distances, and it is used to determine geodetic datums, which are the basis of other surveys. A total station is known as a representative example of equipment used for geodetic surveying. These instruments measure distances and azimuths using optical laser observations.

The present invention is to provide a method that can modify the attribute data by using a direct geodetic surveying equipment during geodetic surveying without needing to confirm whether the attribute data through a separate field survey.

In addition, the present invention is to provide a method for calculating the accuracy of the attribute data in order to increase the reliability and utilization of the digital map.

In order to solve these problems, the present invention (A) receiving a specific polygon attribute data of the digital map from the digital map DB of the GIS server in a geodetic survey equipment equipped with a communication interface, input unit, display unit, attribute data processing unit and memory ; (B) The attribute data processing unit of the geodetic surveying equipment checks whether the specified polygon attribute data of the received digital map matches the site information of the location where the geodetic surveying equipment is located, and if it does not match, Modifying the attribute data based on the information input to the input unit; (C) transmitting specific polygon attribute data of the modified numerical map to the digital map DB of the GIS server when the match confirmation value and the attribute data are modified in the geodetic surveying equipment; And (D) calculating the attribute data accuracy of the digital map on the basis of the acknowledgment whether the accuracy map of the GIS server is transmitted to the digital map DB. It provides a geodetic survey method that can correct and confirm the accuracy of attribute data.

In the geodetic survey method that can modify the attribute data of the digital map and confirm the accuracy of the attribute data simultaneously with the geodetic survey according to the present invention, the digital map DB includes a digital map, a coordinate file, an attribute table and an accuracy table , The coordinate file is the coordinate data of the digital map, the attribute table is the attribute data for each polygon of the digital map, the accuracy table represents the accuracy of the attribute data of the digital map, the attribute data is a residential area, agricultural area, factory area It is characterized in that it is selected from the group consisting of commercial area, forest area, bare land and wetland area.

In the geodetic survey method that can modify the attribute data of the digital map at the same time as the geodetic survey according to the present invention, and confirm the accuracy of the attribute data, the accuracy calculation unit calculates the accuracy of the attribute data according to the following equation (1) It is done.

[Equation 1]

(Where C is the accuracy of attribute data, N is the total number of polygons, a is the number of polygons with matching attributes, and d is the number of polygons with matching attributes)

In the geodetic survey method that can modify the attribute data of the digital map and confirm the accuracy of the attribute data simultaneously with the geodetic survey according to the present invention, step (D) is characterized in that it is made for each class.

As described above, the present invention can modify the attribute data by using the geodetic surveying equipment directly when geodetic surveying, it is possible to reduce the manpower, time, cost that is put into the field survey to confirm the attribute data.

In addition, the present invention can provide a foundation for improving the reliability and utilization of the digital map by analyzing the data by calculating the accuracy of the attribution data.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the embodiments, descriptions of technical contents that are well known in the art to which the present invention pertains and are not directly related to the present invention are omitted. This is to more clearly communicate without obscure the core of the present invention by omitting unnecessary description.

1 is an exemplary configuration diagram of a system for performing a geodetic surveying method that can modify the attribute data of a digital map and check the accuracy of the attribute data simultaneously with the geodetic survey according to the present invention. Referring to FIG. 1, the geodetic survey equipment 10 is connected to the GIS server 20 through a communication network 30. The communication network 30 may use any one of commercially available wireless communication networks.

Geodetic survey equipment 10 is a device that is input to the geodetic surveying site, a number of geodetic surveying equipment 10 can be input to a plurality of sites at the same time. The geodetic surveying equipment 10 has a communication interface 12, a display section 14, an attribute data processing section 16, an input section 18, in addition to the existing configuration required for geodetic surveying (e.g., a measuring instrument, a measuring device, a display section, an attribute data processing section, etc.) ) And a memory 19. These configurations may be separately provided to carry out the processing method of the present invention, or may overlap some or all of the existing configurations.

Geodetic survey equipment 10 is connected to the communication network 30 through the communication interface 12, and communicates with the GIS server 20 through the communication network 30 to send and receive data. Examples of the transmission / reception data include attribute data of each polygon stored in the GIS server 20, correction values of the attribute data input from the geodetic surveying equipment 10, and a confirmation value of coincidence. The communication interface 12 is any one of commercially available transceivers, modems, and the like that mediate a connection to the communication network 30.

The display unit 14 is an output device for visually expressing the attribute data related information, and may exemplify a conventional monitor.

The attribute data processing unit 16 checks whether the received attribute data matches the site information of the place where the geodetic surveying equipment is located, and if the attribute data does not match, the attribute data based on the information input to the input unit of the geodetic surveying equipment. As the place to perform the function of modifying the conventional microprocessor can be used.

The input unit 18 detects a user's input behavior and generates a signal. For example, when a user modifies the attribute data of a specific polygon or inputs a matching confirmation through the input unit 18, the input unit 18 generates a corresponding correction value or matching confirmation value. The input unit 18 uses a keyboard, a mouse, a touch pad, a pointing device, and conventional input devices corresponding thereto. The memory 19 temporarily stores attribute data of a specific polygon from the GIS server 20.

The GIS server 20 includes a digital map DB 22 and an accuracy calculation unit 24. The digital map DB 22 may include a digital map 22a, a coordinate file 22b, an attribute table 22c, an accuracy table 22d, and the like. The coordinate file 22b is coordinate data of the digital map, the attribute table 22c is attribute data for each polygon of the digital map, and the accuracy table 22d indicates the accuracy of attribute data of the digital map. It is characterized in that it is selected from the group consisting of residential area, agricultural area, factory area, commercial area, forest area, bare land and wetland area.

The accuracy calculator 24 calculates the accuracy of attribute data according to Equation 1 below, and a conventional microprocessor may be used.

(Where C is the accuracy of attribute data, N is the total number of polygons, a is the number of polygons with matching attributes, and d is the number of polygons with matching attributes)

1 and 2, a geodetic survey method for modifying attribute data of a digital map and confirming accuracy of attribute data simultaneously with geodetic surveys according to an embodiment of the present invention will be described. 2 is a flowchart illustrating a geodetic surveying method capable of modifying attribute data of a digital map at the same time as geodetic surveying according to an embodiment of the present invention and confirming the accuracy of the attribute data.

Geodetic survey method that can modify the attribute data of the digital map at the same time as the geodetic survey according to the present invention, and can check the accuracy of the attribute data (A) from the numerical map DB of the GIS server to the specific interface of the polygon data of the digital map, the communication interface, Receiving at a geodetic surveying device having an input unit, a display unit, an attribute data processing unit and a memory; (B) The attribute data processing unit of the geodetic surveying equipment checks whether the specified polygon attribute data of the received digital map matches the field information of the location where the geodetic surveying equipment is located, and if it does not match, the input unit of the geodetic surveying equipment. Modifying the attribute data based on the information inputted in the; (C) transmitting specific polygon attribute data of the modified numerical map to the digital map DB of the GIS server when the match confirmation value and the attribute data are modified in the geodetic surveying equipment; And (D) calculating the accuracy of attribute data of the digital map based on the confirmation of whether the GIS server is matched to the digital map DB.

First, in step S31, the specific polygon attribute data of the numerical map is received from the digital map DB 22 of the GIS server 20 by the geodetic surveying equipment 10 equipped with a communication interface, an input unit, a display unit, an attribute data processing unit, and a memory. . The geodetic survey equipment 10 may be connected to the communication network 30 through the communication interface 12, and may be connected to the GIS server 20 through the communication network 30. The reception of the specific polygon attribute data may be automatically performed according to the connection of the geodetic surveying equipment 10 and the GIS server 20 or may be performed by receiving an input through the input unit 18. Specific polygons generally mean, but are not necessarily limited to, polygons in which geodetic survey equipment 10 is located. In some cases, it may be possible to receive attribute data for a polygon that is not the current location of the geodetic survey equipment 10. When the reception of the attribute data is automatically performed, the specific polygon becomes the polygon in which the geodetic surveying equipment 10 is currently located, and when it is performed according to a signal generated by the input unit, the polygon becomes an input polygon. That is, after receiving the coordinates of the GPS receiver additionally provided in the geodetic surveying equipment 10 or the signal generated by the input unit 18 of the geodetic surveying equipment 10 from the GIS server 20, the digital map DB 22 The attribute data of the polygon is retrieved from the attribute table 22c, and the retrieved attribute data is transmitted to the geodetic survey equipment 10. FIG.

Next, the attribute data processing unit 16 of the geodetic surveying equipment checks whether the specified polygon attribute data of the received digital map matches the site information of the place where the geodetic surveying equipment is located (step S32), and if it does not match, On the basis of the information input to the input unit 18 of the geodetic surveying equipment to modify the attribute data (step S33). That is, the received attribute data is stored in the memory 19 of the geodetic surveying equipment and then displayed on the display unit 14. In the display unit 14, the phrase for calculating whether the attribute data is matched is displayed on the display unit, the user looks at the displayed attribute data to determine whether the match through the field check and input the result through the input unit 12. For example, if the displayed attribute data (ie, pre-populated on a digital map) is an agricultural region, check that the current polygon is actually the agricultural region and enter the result. If the input result of the user is inconsistent with the attribute data, the attribute data may be corrected by receiving a subsequent input of the user through the input unit 18 of the geodetic surveying equipment 10. For example, if a user inputs a residential area, the attribute data of the polygon is modified into a residential area. Since the class of attribution data is already defined (e.g. residential, agricultural, factory, commercial, forestry, bare land, wetland, etc.), the modification of attribution data is selected from a given list. It is desirable to avoid errors. If the user's input result is attribute data match (step S34), it means that only the user input of attribute data match is received. Checking whether the attribute data matches or correcting the attribute data is processed by the attribute data processing unit 16.

In step S35, when the match value and the attribute data are corrected, specific polygon attribute data of the modified digital map is transmitted to the digital map DB of the GIS server through the communication interface 12 of the geodetic surveying apparatus 10. The transmission of specific polygon attribute data of the matching value or the modified numerical map may also be processed by the attribute data processing unit 16.

In step S36, the accuracy calculation unit 24 of the GIS server 20 calculates the accuracy of the attribute data of the digital map based on the confirmation whether the numerical map is transmitted to the digital map DB.

The accuracy of the attribute data can be calculated for each class. Assuming that the class of the attribute data is as shown in Table 1 below, the accuracy (C) of the attribute data is calculated by Equation 1 above.

class Total polygon count (N) Coincident Polygon Number (a) Mismatched Polygon Count (d) Attribute data accuracy (C) I 780 768 12 0.98 Ⅱ 352 352 0 1.00 Ⅲ 248 203 45 0.79 Ⅳ 68 63 5 0.92 Ⅴ 502 433 69 0.84

Whenever the GIS server 20 receives the attribute data modification value of a specific polygon from the geodetic surveying equipment 10, it calculates and updates the accuracy again. The final calculated value indicates the accuracy of the attribute data of the initial digital map. The accuracy and reliability of the digital map can be found by providing data that can show how errors occurred in which class and analyze the cause of the error. This can contribute to greater utilization.

Finally, in step S37, the corrected attribute data and the accuracy of the calculated numerical map are stored in the attribute table 22c and the accuracy table 22d of the digital map DB 22, respectively.

In the above-described embodiment, the geodetic survey equipment 10 requests and receives attribute data of a specific polygon to the GIS server 20, but the present invention is not necessarily limited to such a case. As another example, it is possible to request and receive the entire digital map of a specific polygon. In addition, although the attribute data accuracy was calculated for each class in the above embodiment, the attribute data accuracy may be calculated for the entire numerical map, not for each class.

So far, the method for processing attribute data of the digital map according to the present invention has been described through the examples. In the present specification and drawings, preferred embodiments of the present invention have been disclosed, and although specific terms have been used, these are merely used in a general sense to easily explain the technical contents of the present invention and to help the understanding of the present invention. It is not intended to limit the scope. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

1 is an exemplary configuration diagram of a system for performing a geodetic surveying method capable of modifying attribute data of a digital map at the same time as geodetic surveying and confirming the accuracy of attribute data according to the present invention;

2 is a flow chart showing a geodetic survey method that can modify the attribute data of the numerical map and confirm the accuracy of the attribute data simultaneously with the geodetic survey according to an embodiment of the present invention.

Claims (4)

Geodetic survey methods to modify the attribution data of a digital map and verify the accuracy of the attribution data simultaneously with geodetic surveys, including (A) receiving specific polygon attribute data of the digital map from a digital map DB of a GIS server in a geodetic survey equipment equipped with a communication interface, an input unit, a display unit, an attribute data processing unit, and a memory; (B) The attribute data processing unit of the geodetic surveying equipment checks whether the specified polygon attribute data of the received digital map matches the site information of the location where the geodetic surveying equipment is located, and if it does not match, the input unit of the geodetic surveying equipment. Modifying the attribute data based on the information inputted in the; (C) transmitting specific polygon attribute data of the modified numerical map to the digital map DB of the GIS server when the match confirmation value and the attribute data are modified in the geodetic surveying equipment; And (D) calculating the accuracy of the attribute data of the digital map based on the confirmation whether the accuracy calculation unit of the GIS server transmitted to the digital map DB. The digital map of claim 1, wherein the digital map DB includes a digital map, a coordinate file, an attribute table, and an accuracy table, wherein the coordinate file is coordinate data of the digital map, and the attribute table is attribute data for each polygon of the digital map. The accuracy table indicates the accuracy of the attribution data of the digital map, and the attribution data is selected from the group consisting of residential area, agricultural area, factory area, commercial area, forest area, bare land and wetland area. Geodetic method that can modify the attribute data of a digital map at the same time. The geodetic survey of claim 1, wherein the accuracy calculating unit calculates the accuracy of the attribution data according to Equation 1 below, and simultaneously modifies the attribution data of the digital map and confirms the accuracy of the attribution data. Way: [Equation 1]

(Where C is the accuracy of attribute data, N is the total number of polygons, a is the number of polygons with matching attributes, and d is the number of polygons with matching attributes). The geodetic surveying method of claim 1, wherein step (D) is performed for each class.

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