KR102070169B1 - Digital topographic map system updating the coordinates data no topographic map - Google Patents

Abstract

The present invention relates to a digital topographic map system that updates coordinate data of a digital topographic map according to a local area so that a topographic image is disposed in place on the digital topographic map to complete a reliable digital topographic map. A digital topographic map correction part comprises DB, a topographic image analysis module, a zone information generation module, a reference point analysis module, an image pixel flow module, a coordinate data generation module, a location inspection module, a CNN module, a topographic image correction module, and a topographic matter location correction module.

Description

DIGITAL TOPOGRAPHIC MAP SYSTEM UPDATING THE COORDINATES DATA NO TOPOGRAPHIC MAP}

The present invention relates to a digital topographic map system for updating a digital topographic coordinate data according to a site so that a ground water image is disposed in a position in a digital topographic map so as to complete a reliable digital topographic map.

The ground water image composed in the digital topographic map was different from the actual position of the ground, and this difference caused the reliability of the digital topographic map.

In order to solve such a problem, a technique of conventionally synthesizing ground water images according to field coordinates regardless of ground images has been proposed.

However, it was difficult for the operator to manually edit a large number of groundwater images composed of the ground image, and furthermore, there was a limit that the characteristics of the terrain displayed on the ground image could not be reflected in the digital topographic map.

In addition, as the actual ground waters are newly established and destroyed, the numerical topography also needs to be partially updated. In the conventional digital topographic maps, the numerical topographic maps have to be burdened because they have to be manually operated by the grounds and the position and editing. .

Prior Art Documents 1. Patent Registration No. 10-1774878 (announced on September 5, 2017)

Accordingly, the present invention is to solve the above problems, to provide a digital topographic map system to update the digital topographic coordinate data according to the site so that the ground water image is placed in place in the digital topographic map to complete a reliable digital topographic map. To solve this problem.

In order to achieve the above object, the present invention,

A ground image storage unit for storing and managing ground image information; A ground water image storage unit configured to store and manage the ground water image, the zone image composed of the ground water image, and the ground water image for each version; The field coordinates of the ground, the reference coordinates that are the field coordinates of the zone image and the reference position, the numerical coordinates of the ground water image, the nearest distance value according to the field coordinates between neighboring grounds, A map information storage unit for storing and managing general information; DB, consisting of; numerical data storage for storing data of the digital topographic map;

Analyze the ground image to extract the shape of the ground and identify nine reference positions located in three rows and three columns in the ground area.The reference coordinate values of neighboring reference positions are the same ground image with one of the X axis value and the Y axis value. Analysis module; A zone information generation module for generating a zone image by allowing the first ground image of the ground object of each ground zone to be drawn, and inserting a reference position point of the reference position into the zone image; The reference horizontal axis and the reference vertical axis intersecting the reference position points of one reference position located at the center of the nine reference positions positioned in the three rows and three columns are respectively generated in the zone image, and the reference position points of the reference position located at the center and In addition, a connecting horizontal axis and a connecting vertical axis connecting the reference position points of the eight reference positions positioned around the horizontal and vertical directions, respectively, are generated in the zone image, but the connecting horizontal axis or the non-parallel parallel to the reference horizontal axis or the reference vertical axis line or A reference point analysis module for identifying a reference point on the connection vertical axis and designating the reference point as the flow target point; The connecting horizontal axis and the connecting vertical axis parallel to the reference horizontal axis and the reference vertical axis, respectively, are extended to form a base line in the zone image, and the flow target point deviated from the base line in the zone image to the position of the corresponding intersection point between the base lines. An image pixel flow module for distorting the image in pixel units through a requipy technique to move the image pixel, thereby transforming an image within a reference range of the flow target point in the zone image; Divide the coordinate lines between the reference position points based on the reference coordinate value of the reference position point to generate an arbitrary coordinate system in the zone image transformed by the image pixel flow module, and the numerical value for each first ground image based on the arbitrary coordinate system. If the interval between the coordinate lines is different for each section of the reference position point, the coordinate values are extracted, and the arrangement position is corrected so that all coordinate lines constituting the arbitrary coordinate system have equal intervals, and the first ground object is adjusted in accordance with the corrected arbitrary coordinate system. A coordinate data generation module for correcting the position and shape of the image with a second ground image; Check the recent distance between the neighboring second ground image according to the numerical coordinate value, compare and inspect the distance value between the second ground image stored in the map information storage unit, and match the second value according to the distance value. Position check module for moving the position of the ground water image; CNN module for searching the ground water shape of the maximum similarity in the ground water image storage unit by analyzing the shape of the second ground water image inspected by the position checking module and performing an image search based on a convolutional neural network (CNN). ; In the ground water image storage unit, the ground water image storage unit searches for the previous ground water image having the numerical coordinate value within the reference range from the numerical coordinate value of the second ground water image, and replaces the ground surface image with the previous ground water image. A ground image correction module for correcting the third ground image, but replacing the second ground image with the ground shape searched by the CNN module if the previous ground image is not found; The difference between the first angle between the numerical coordinate value of the third ground image and the line segment connecting three or more reference position points, and the second angle between the field coordinate value of the ground and the segment connecting three or more reference position points, respectively. When the value exceeds the reference range, the ground coordinate position correction module for correcting the numerical coordinate value to a position point on the arbitrary coordinate system corresponding to the second angle, and to correct the fourth ground image by moving the third ground image Digital topographical correction unit

Digital topographical map system including a digital topographical coordinate system for updating and processing according to the local.

The present invention has the effect of completing the digital topographic map with high reliability by arranging the ground water image in place in the digital topographic map.

1 is a block diagram showing an embodiment of a digital topographic map system according to the present invention;
2 is a diagram in which a digital topographic map system generates a zone image based on a ground image and forms a reference horizontal axis, a reference vertical axis, a connecting horizontal axis, and a connecting vertical axis line,
3 is a flowchart showing a process of checking, correcting, and editing an error in generating a digital topographic map based on the digital topographic map system according to the present invention;
4 is a diagram showing a state in which the digital topographic system distorts the zone image according to the present invention;
5 is a diagram illustrating an image distortion state of an image pixel flow module configured in a digital topographic map system according to the present invention.
6 is a view showing a state in which the digital topographic system according to the present invention generates an arbitrary coordinate system in the ground water image,
7 is a view showing a state in which the digital topographical system according to the present invention corrects the arbitrary coordinate system and the ground water image,
8 is a view schematically showing a position check state of the digital topographic map system according to the present invention;
FIG. 9 is a view schematically illustrating a position correction of a groundwater image according to the present invention.
10 is a view showing the shape correction of the ground water image in the digital topographic system according to the present invention,
11 is a view schematically showing a method for correcting the shape of a groundwater image in a digital topographic system according to the present invention;
12 is a diagram illustrating a state in which the digital topographic map system corrects the position of the ground water image by comparing the angle between the reference coordinate value and the numerical coordinate value according to the present invention.
FIG. 13 is a view schematically showing how a digital topographic map system according to the present invention compares the angle between a reference coordinate value, a numerical coordinate value, and a field coordinate value.
14 is a diagram schematically illustrating the position correction inspection of the ground water image in the digital topographic map system according to the present invention.

The above-described features and effects of the present invention will be apparent from the following detailed description with reference to the accompanying drawings, whereby those skilled in the art can easily implement the technical idea of the present invention. There will be. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

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

1 is a block diagram showing an embodiment of a digital topographic map system according to the present invention, Figure 2 is a digital topographic map system according to the present invention generates a zone image based on the ground image and connected with the reference horizontal axis and the reference vertical axis line It is a figure which formed the horizontal axis line and the connection vertical axis line.

1 to 2, the digital topographic map system 100 according to the present embodiment includes an image data storage unit 110, a ground water image storage unit 120, a map information storage unit 130, and a numerical data storage unit ( 140 and the digital topography correction unit 150.

Here, the image data storage unit 110 stores and manages the ground image information. The ground image information includes a ground image IM generated by aerial photography, and the ground image IM is divided and managed in units of positions. Therefore, a wide range of ground image can be formed by synthesizing the ground image IM of neighboring areas. The ground image information includes a ground image IM and location information of the ground image IM.

The ground water image storage unit 120 includes a ground water shape in which the actual shape of the ground water S is drawn, a zone image ZI including one or more ground water images DI, and a ground water image ( Save and manage DI) by version. The ground object shape is a sample image simplified by drawing the ground object S displayed on the ground image as it is. For reference, only groundwater, especially buildings, etc. may vary in size, but the overall planar shape may be similar. Therefore, the number of groundwater shapes is relatively small compared to the number of the same groundwater (S). Meanwhile, since the zone image ZI is a picture of the ground image IM divided into zones, the zone image ZI is a ground image image DI corresponding to the ground object S formed in the ground image IM. ).

The map information storage unit 130 includes a field coordinate value of the ground object S, a reference coordinate value that is a field coordinate of the zone image ZI, a numerical coordinate value of the ground object image DI, and a ground object S. Save and manage all the information. Since the ground (S) is real, the operator measures the field coordinates, which are the corresponding GPS coordinates. In addition, the zone image (Z1) divided into zones has nine or more reference positions, which are reference points of the zone, and measures reference coordinate values, which are GPS coordinates, for each reference position. Subsequently, the numerical coordinate value is generated based on the arbitrary coordinate system generated in the zone image ZI, and is the position where the ground water image DI is located in the arbitrary coordinate system.

The numerical data storage unit 140 stores the previous version of the digital topographical information and the new digital topographical information. In the digital topographic map, basic general information as well as general ground image (DI-specific general information) are linked to the zone image (ZI) in which the ground water image (DI) is configured. The numerical data storage unit 140 is a zone image of a previous version and a new version. Store and manage all (ZI).

The digital topographic map correction unit 150 utilizes the information stored in the image data storage unit 110, the ground water image storage unit 120, the map information storage unit 130 and the numerical data storage unit 140, respectively, Create To this end, the digital topographic map correction unit 150 includes the ground image analysis module 151, the zone information generation module 152, the coordinate data generation module 153, the reference position analysis module 153 ′, and the image pixel flow module 153. &Quot;), the CNN module 154, the ground water image correction module 155, the ground water position correction module 156, and the digital topographic map update module 157.

A detailed description of each module 151 to 157 configured in the digital topographical correction unit 150 will be described in more detail below.

3 is a flowchart showing a process of checking, correcting, and editing a digital topographic map generation error based on the digital topographic map system according to the present invention, and FIG. 5 is a view showing an image distortion state of the image pixel flow module configured in the digital topographic map system according to the present invention, Figure 6 is a digital topographic system according to the present invention generates an arbitrary coordinate system in the ground water image Figure 7 is a view showing a state, Figure 7 is a diagram showing a state in which the digital topographical system according to the present invention corrected the arbitrary coordinate system and the ground water image, Figure 8 is a view of the position of the digital topographic map system according to the present invention Figure 9 is a schematic diagram, Figure 9 is a schematic diagram showing the position correction of the ground water image according to the present invention is a digital topographical system 10 is a diagram illustrating the shape correction of the ground water image according to the present invention, and FIG. 11 is a schematic view showing a method of correcting the shape of the ground water image according to the present invention. One drawing.

1 to 11, the numerical topographical system of this embodiment operates in the following order.

S10; Reference position designation step in ground image information

Ground image analysis module 151 analyzes the ground image (IM) of the ground image information to extract the ground (S), as shown in Figure 2 (b) to identify at least nine reference positions located in the ground area. do. Nine reference positions are located in at least three rows and three columns in the ground image IM. At this time, the reference coordinate values of neighboring reference positions are equal to one of the X axis value and the Y axis value. That is, the 'A' reference position and 'I' reference position neighboring each other in the horizontal direction have the same Y-axis value in the reference coordinate value, and the 'A' reference position and 'Multi' reference position adjacent to each other in the longitudinal direction are the reference coordinate. The X-axis value is the same in the value.

In more detail with respect to the ground image analysis, the ground image analysis module 151 determines the boundary between the closed zones based on the change of the set color and brightness for each pixel in the ground image IM shown in FIG. The boundary line is drawn along the boundary of the extracted closed section. The boundary line display of the ground image analysis module 151 is automatically performed according to a designated process to complete the draft image.

Subsequently, the ground image analysis module 151 searches for and extracts a cover configured in the ground image IM to identify the reference position. Since at least nine signs are installed in the ground zone, the ground image analysis module 151 searches for and extracts at least nine signs from the ground image IM. As described above, the mark is located in at least three rows and three columns, and the reference coordinate value, which is the position coordinate of neighboring marks, should be equal to one of the X axis value and the Y axis value.

For reference, the marker is installed in the ground area by the operator, and is photographed during aerial photography of the ground area and displayed on the ground image IM.

S20; Ground water image generation step

The zone information generation module 152 generates the zone image ZI of the ground image IM by allowing the ground water image DI of the ground water S for each ground zone to be drawn, and the reference position of the reference position. The points SP1 to SP9 are inserted into the zone image ZI and edited.

In more detail, the zone information generation module 152 provides a general work environment such as a menu that the operator can draw based on the boundary line automatically generated by the ground image analysis module 151. The image illustrated in the above environment is generated by the zone information generation module 152 as a zone image ZI as shown in FIG. 2 (b), and the zone information generation module 152 is a reference position point for displaying the reference position. (SP1 to SP9) are inserted into the zone image ZI and edited.

For reference, since the zone image ZI is equally drawn based on the ground image IM, the zone information generation module 152 corresponds to the reference position points SP1 to SP9 of the ground image IM. Insert and edit it as it is in the zone image (ZI).

S30; Anchor point analysis stage

The reference point analysis module 153 ′, as shown in (c) of FIG. 2 and (a) of FIG. 4, includes one reference center located at nine reference positions SP1 to SP9 located in three rows and three columns. Check the location. Since the nine reference positions are arranged in three rows and three columns, the eight reference positions are positioned to surround the first second reference position located at the center.

When the reference position located at the center is confirmed, the reference position point analysis module 153 'may include the reference horizontal axis line SX and the reference vertical axis line crossing the second reference position point SP2 which is the position point of the reference position located at the center. SY) are generated in each zone image ZI. Here, the reference horizontal axis SX and the reference vertical axis SY are references to the arbitrary coordinate system AX (see FIG. 6). This will be described in more detail below. For reference, the arbitrary coordinate system AX is coordinate data of the digital topographical map displayed on the zone image ZI.

Subsequently, the reference position point analysis module 153 'moves the reference position points SP1, SP3 to SP9 of the eight reference positions positioned along with the second reference position point SP2 in the lateral and longitudinal directions. The connecting horizontal axis L1 and the connecting vertical axis L2 to L4 are respectively generated in the zone image ZI. In more detail, since the nine reference position points SP1 to SP9 are points formed in the zone image ZI, the reference position analysis module 153 'is a reference position point located in the horizontal or longitudinal direction. Can be connected to each other. For example, the first reference position point SP1 may be connected to the sixth reference position point SP6 and the eighth reference position point SP8 positioned in the lateral direction, and the fourth reference position point may be located in the longitudinal direction. SP4) and the fifth reference position point SP5, respectively. In FIG. 2 (c) and FIG. 4 (a), the connecting horizontal axis line L1 connecting the sixth reference point SP6 and the eighth reference point SP8 and the eighth reference point SP8 are shown. ) And the connecting longitudinal axis L2 connecting the ninth reference position point SP9, and the connecting longitudinal axis L3 and the fourth reference position connecting the first reference position point SP1 and the fourth reference position point SP4. The connecting vertical axis L4 connecting the point SP4 and the fifth reference position point SP5 is shown, respectively.

In addition, the reference position analysis module 153 ′ checks the connection horizontal axis L1 or the connection vertical axis L2 to L4 that is not parallel to the reference horizontal axis SX or the reference vertical axis SY. Since the connection horizontal axis L1 or the connection vertical axis L2 to L4 is a connection line connecting the reference position points SP1 to SP9 with each other, it is determined whether the connection horizontal axis L1 or the connection vertical axis L4 is parallel to the reference horizontal axis SX or the reference vertical axis SY. You can check. For reference, if any connection horizontal axis or connection vertical axis is parallel to both the reference horizontal axis SX and the reference vertical axis line SY, the connection horizontal axis or connection vertical axis line is excluded from the confirmation object.

Subsequently, the reference position point analysis module 153 'is a reference position point on the connection horizontal axis L1 or the connection vertical axis L2 to L4 which is determined to be non-parallel with the reference horizontal axis SX or the reference vertical axis SY. Check (SP4, SP8). Accordingly, the reference position points on the connecting horizontal axis L1 are the sixth reference position points SP6 and the eighth reference position points SP8, and the reference position points on the connection vertical axes L2 to L4 are the first reference position points ( SP1), the fourth reference position point SP4, the fifth reference position point SP5, the eighth reference position point SP8, and the ninth reference position point SP9. However, since the connecting horizontal axis connecting the first reference position point SP1 and the sixth reference position point SP6 is parallel to the reference horizontal axis SX, the first reference position point SP1 located on the connecting horizontal axis line SP1. ) And the sixth reference point SP6 are excluded from the verification target. In addition, since the connecting horizontal axis connecting the fifth reference position point SP5 and the seventh reference position point SP7 is parallel to the reference horizontal axis SX, the fifth reference position point SP5 is also excluded from the confirmation object. In addition, since the connecting vertical axis line connecting the ninth reference position point SP9 and the third reference position point SP3 is parallel to the reference vertical axis line SY, the ninth reference position point SP9 is also excluded from the verification target. As a result, the reference position analysis module 153 'extracts and confirms the fourth reference position point SP4 and the eighth reference position point SP8 and designates it as the flow target point.

S40; Zone Image Distortion Step

The image pixel flow module 153 ″ extends the connection horizontal axis and the connection vertical axis parallel to the reference horizontal axis SX and the reference vertical axis SY, respectively, as shown in FIG. 4 (a). Base lines AX1, AX1 ', AX2, AX2', AX3, and AX3 'are formed on the substrate.

At this time, the reference horizontal axis line SX and the reference vertical axis line SY via the second reference position point SP2 are also extended to form the basic lines AX1 and AX1 '.

Subsequently, the image pixel flow module 153 "checks the intersection points SP4 'and SP8' between the basic lines AX1, AX1 ', AX2, AX2', AX3 and AX3 ', respectively, and checks the corresponding intersection points SP4' and SP8. ') Is determined as the standard position, so the flow target points (SP4, SP8) separated from the base lines (AX1, AX1', AX2, AX2 ', AX3, AX3') in the zone image (ZI) are the base line (AX1). The image is distorted pixel-by-pixel through the Requipy technique to move to the position of the corresponding intersection point SP4 ', SP8' between AX1 ', AX2, AX2', AX3, and AX3 '.

More specifically, since the flow target points SP4 and SP8 and the intersection points SP4 'and SP8' are different in the arrangement position, the flow target points SP4 and SP8 are sections separated from the standard position. Therefore, in order to move the flow target points SP4 and SP8 to the intersection points SP4 'and SP8' which are standard positions, the image pixel flow module 153 "moves the flow target points SP4 and SP8 in the zone image ZI. Image pixels within the included reference range (Z1, Z2) are moved, where continuity with the image pixels outside the reference range (Z1, Z2) must be maintained, so that the distortion rate is further away from the flow target points (SP4, SP8). As a result, as shown in (b) of FIG. 5, the flow target points SP4 and SP8 move to the right, and the corresponding image is deformed, but the further away from the flow target points SP4 and SP8, the smaller the image deformation of the outer portion. Lose.

As a result, by moving the flow target points SP4 and SP8 in the zone image ZI, the shape of the ground water image DI within the reference ranges Z1 and Z2 from the flow target points SP4 and SP8 is also deformed.

Rikwi pie technology is already widely known technology utilized in the graphic editing software such as Photoshop ^®, a specific algorithm description of the pie rikwi technology will be omitted.

S50; Arbitrary coordinate system generation step

The coordinate data generation module 153 is a coordinate line between the reference position points SP1 to SP9 based on the reference coordinate values x1 and y1 (x2 and y2) (x3 and y3) of the reference position points SP1 to SP9. By dividing (XL, YL1, YL2), an arbitrary coordinate system AX is generated in the zone image ZI deformed by the image pixel flow module 153 ". The interval between the coordinate lines XL, YL1, YL2 is also generated. If the reference position points SP1 to SP9 are different for each section, the arrangement position is corrected so that all coordinate lines XL, YL1, and YL2 constituting the arbitrary coordinate system AX are equally spaced, and the position and shape of the ground water image. Correction is made according to the corrected arbitrary coordinate system AX.

In more detail, the reference coordinate values (x1, y1) (x2, y2) (x3, y3) of the reference position points SP1 to SP9 are GPS coordinates and are stored and managed in the map information storage unit 130. The coordinate data generation module 153 searches for the reference position points SP1 to SP9 of the ground image IM in the map information storage unit 130 to determine the reference coordinate values x1, Check y1) (x2, y2) (x3, y3).

Referring to the drawings in more detail, 'section 1' and 'section 2' are formed between the basic lines AX1, AX1, AX2, AX2, AX3 and AX3 generated as described above, and coordinates The data generation module 153 divides the coordinate lines XL, YL1, and YL2 into respective regions based on the reference coordinate values (x1, y1) (x2, y2) (x3, y3), and then divides the coordinate lines XL (YL1, YL2) of FIG. As shown in the drawing, an arbitrary coordinate system AX of the zone image ZI is generated. However, since the reference coordinate values (x1, y1) (x2, y2) (x3, y3) of the reference position points (SP1 to SP9) are field coordinates that are GPS coordinates, an error is generated in the zone image Z1 irrelevant to the field coordinates. Is bound to occur. That is, as shown in FIG. 7A, the coordinate line YL1 and the second reference position point SP2 formed in the section 1 between the first reference position point SP1 and the second reference position point SP2 are arranged. The distance between the coordinate line YL2 configured in 'section 2' between the third reference position point SP3 may be different in the zone image ZI.

Therefore, the coordinate data generation module 153 may include all coordinate lines XL, YL1, and constituting the arbitrary coordinate system AX when the interval between the coordinate lines XL, YL1, and YL2 is different for each section of the reference position points SP1 to SP9. The position of the coordinate lines XL, YL1, and YL2 is corrected so that YL2 is equidistantly spaced, and thus, between the first reference position point SP1 and the second reference position point SP2 as shown in FIG. Section 1 'is corrected to' section 3 'and' section 2 'between the second reference position point SP2 and the third reference position point SP3 is corrected to' section 4 '. In addition, the coordinate data generation module 153 corrects the position and shape of the ground water images DI1 and DI2 according to the corrected arbitrary coordinate system AX, and the ground water images DI1 ', as illustrated in FIG. DI2 ').

As a result, the coordinate data generation module 153 may complete the arbitrary arbitrary coordinate system AX in the zone image ZI through editing the reference position.

S60; Steps to Create Numerical Coordinates of Ground Image

When the arbitrary coordinate system AX and the ground water images DI1 and DI2 are corrected and generated, the coordinate data generation module 153 checks the midpoint positions of the ground water images DI1 and DI2 in the arbitrary coordinate system AX. The numerical coordinate values P1 of the water images DI1 and DI2 are generated as shown in FIG. 10.

S70; Ground water image search step

The CNN module 154 analyzes the shape of the ground water image DI generated by the zone information generation module 152 or the coordinate data generation module 153 to search for an image based on a convolutional neural network (CNN). Through the ground water image storage unit 120 retrieves the ground water shape (F1) of the maximum similarity.

As described above, the ground object shape F1 is a sample image of various shapes collected by drawing the ground object S. FIG. Therefore, the ground water image storage unit 120 stores and manages a plurality of ground water shapes (F1) of various shapes, the CNN module 154 is the shape and the most of the ground water image (DI) in accordance with known deep learning image search technology Search for similar ground water feature (F1).

Subsequently, the groundwater image correction module 155 grounds the previous groundwater image having the numerical coordinate value P1 of the groundwater image DI extracted by the coordinate data generation module 153 and the numerical coordinate value within the reference range. In the previous version of the image stored in the water image storage unit 120, the ground water image (DI) is replaced with the previous ground water image as shown in Figure 10, but if the previous ground water image is not detected, the CNN module 154 is searched A groundwater shape (F1) replaces the groundwater image (DI).

In more detail, the zone image (ZI), which is the base image of the digital topographic map, is newly generated and updated according to the change of the ground (S) and the corresponding terrain, and thus, the zone image (ZI) of the new version is generated. When creating, you can refer to the zone image of the previous version. Therefore, before correcting the shape of the ground water image DI configured in the new version of the zone image ZI, the ground water image configured in the zone image of the previous version can be searched. The ground water image correction module 155 transfers the ground water image having a numerical coordinate value P1 of the ground water image DI and a numerical coordinate value located within a reference range in order to search the ground water image from the previous version of the zone image. Retrieve from the zone image of the version.

For reference, the previous ground water image searched by the ground water image correction module 155 may be a ground water image DI different from the ground water image DI of the current zone image ZI. The CNN module 154 compares the shape and color with the ground water image DI of the zone image ZI and checks the matching rate between the images. As a result of the check, if the coincidence rate between the previous ground water image and the ground water image DI of the zone image ZI corresponds to a reference range, the ground water image correction module 155 may determine the previous ground water image and the zone image ZI. The above ground water image (DI) is considered to be an image of the same ground water (S) and replaced. However, if the matching ratio between the previous ground water image and the ground water image DI of the zone image ZI is out of the reference range, the ground water image correction module 155 may detect the ground water shape searched by the CNN module 154. Replace groundwater image (DI) with F1).

The CNN module 154 is a well-known algorithm for calculating an image search and a matching rate between two images, and can be applied to the digital topographic map system 100 of the present invention. Since a detailed description of the CNN is already known public technology, a description thereof will be omitted here.

S71; Ground image location inspection phase

As shown in FIG. 8, the position checking module 156 ′ checks the latest distance d1 between the neighboring second ground image images DI and DI3 according to the numerical coordinate value, and is stored in the map information storage unit 130. The distance between the second ground image DI and DI3 is compared and inspected. Here, the distance value is the nearest distance obtained by calculating the field coordinates of the actual ground object S corresponding to the second ground image DI and DI3.

More specifically, as shown in FIG. 9A, the position checking module 156 ′ may include numerical coordinate values of the first second ground image DI and the second second ground image DI3. Check the field coordinates and distance values of the above ground image (DI, DI3). When the field coordinate value and the distance value are confirmed, the position score module 156 ′ is secondly located within the radius t1 of the distance value with the numerical coordinate value P1 of the first ground image image DI as the center. 2 First, it is checked whether or not the numerical coordinate value P1 'of the ground object image DI3 exists.

One or more distance values are configured for each ground object image (DI, DI2 to DI7), and can be confirmed by calculating a field coordinate value of the ground object (S).

The GPS coordinate system, which is the actual field coordinate system, and the arbitrary coordinate system (AX) may be slightly different. Therefore, the distance between the distance value and the distance between the neighboring second ground image images DI and DI3 may not be compared numerically. Therefore, by calculating the ratio of the difference between the numerical coordinates of the second ground image (DI, DI3) and the field coordinates of the ground (S) as a ratio, the distance and the second ground image (DI, Confirm by unifying the distance between DI3). As an example, the numerical values of the first and second terrestrial ground images DI and the second second ground image DI3 are (2, 3) and (5, 7), respectively. If the field coordinate values of S) are (10, 12) and (17, 19), respectively, the distance between the numerical coordinate values is '5' according to [Equation 1], whereas the distance between the field coordinate values is about '9.9'. That is, the distance based on the numerical coordinate value and the distance based on the field coordinate value show a distance difference at a ratio of 1: 2.

Therefore, the distance value of the second ground image DI, DI3 is first converted to a ratio of 1 and 2, and then applied to the numerical coordinate system AX within a radius t1.

The above-described inspection process is performed for each of the distances d1, d2, and d3 of the second ground image DI, DI3, DI7, and DI4.

S72; Ground Image Position Correction Step

As a result of the above-described inspection, if the second second ground image DI3 is outside the radius t1 of the first second ground image DI as shown in FIG. The position of the second second ground image DI3 is corrected as shown in FIG. 9 (b) as a point intersecting with the outside of the radius t1 on the distance line based on the numerical coordinate value.

The position correction is a first modification of the position of the second ground image DI, DI3, DI4, and DI7 configured on the zone image ZI, and may be corrected later.

S80; Ground water image correction step

When the ground water image located in the above condition is found, the ground water image correction module 155 regards the ground water image as the same as the ground water image DI in the zone image ZI of the new version, and the ground water image DI ) Is replaced with the previous version of the groundwater image to create a new groundwater image (DI ').

However, if the ground water image located in the above condition is not detected, the ground water image correction module 155 replaces the ground water image DI with the ground water shape F1 searched by the CNN module 154. For reference, the ground water image correction module 155 edits the ground water shape (F1) according to the arrangement angle and size of the ground water image (DI) as shown in FIG. Replace the above ground water image (DI) with the edited above ground water shape (F1).

10, since the ground image of the present embodiment was retrieved from the previous version of the ground water image, the ground water image correction module 155 ignores the ground water shape (F1) searched by the CNN module 154 and the ground of the previous version. The ground water image (DI) was calibrated with the water image to generate a new ground water image (DI ').

For reference, the new ground water image DI 'is arranged at its midpoint according to the numerical coordinate value P1.

12 is a view illustrating a state in which the digital topographic map system according to the present invention corrects the position of the ground water image by comparing the angle between the reference coordinate value and the digital coordinate value, and FIG. 13 is a reference to the digital topographic map system according to the present invention. FIG. 2 is a diagram schematically showing a comparison between the coordinate angles and the angles between the numerical coordinates and the field coordinates.

A description with reference to FIGS. 1 to 13 is as follows.

S90; Ground Image Position Correction Step

The ground object position correction module 156 may include a first angle between the numerical coordinate values P1 of the new ground object image DI ′ and the line segments R1 to R3 connecting the three or more reference position points SP1 to SP3, respectively. a second angle between (a1, a2) and the line coordinates (P2) of the ground object of the new ground object image (DI) and the line segments R1 'to R3' connecting three or more reference position points SP1 to SP3, respectively. If the difference between (b1, b2) exceeds the reference range, the numerical coordinate value is corrected by the position point P2 on the arbitrary coordinate system AX corresponding to the second angles b1 and b2, and the new ground object image DI Move it.

In more detail, the ground water S of the ground water image DI 'has a field coordinate value confirmed through GPS coordinate measurement, and the reference position points SP1 to SP3 are also reference coordinate values ( x1, y1) (x2, y2) (x3, y3). Therefore, between the field coordinates of the ground object S and the respective line segments R1 'to R3' connecting the reference coordinate values (x1, y1) (x2, y2) (x3, y3), the second angles (b1, b2) Is computed. In the same manner, the first angle between the numerical coordinate value P1 of the ground water image DI 'configured in the zone image ZI and each of the line segments R1 to R3 connecting the reference position points SP1 to SP3 is also measured. a2) is calculated. Therefore, the first angles a1 and a2 in the zone image ZI should be substantially the same as the second angles b1 and b2 in the actual zone.

To this end, the ground object position correction module 156 displays the position points P2 and P2 ′ satisfying the second angles b1 and b2 in the arbitrary coordinate system AX. Two location points P2 and P2 'are identified as shown in FIG. 13 (a), and only one of them is correctly designated by referring to the position of the ground object of the second angles b1 and b2. Can be. For example, as shown in (a) of FIG. 13, the position of P2 and the position of P2 'show a relatively large difference in Y value. Therefore, the ground water position correction module 156 selects the ground point image DI 'closer to the numerical coordinate value P1 of the ground water image DI' among the P2 position points and the P2 'position points. Position).

Subsequently, when the difference between the first angles a1 and a2 and the second angles b1 and b2 exceeds the reference range, the ground water position correction module 156 performs the second angle as shown in FIG. 14 (a). The numerical coordinate value is corrected by the position point P2 on the arbitrary coordinate system AX corresponding to (b1, b2). In addition, the ground object image DI 'is also moved in accordance with the position point P2. However, if the difference between the first and second angles a1 and a2 and the second and second angles b1 and b2 is within the reference range, the groundwater position correction module 156 may display the groundwater image DI ′ in the arbitrary coordinate system AX. It is correctly positioned in place and no further corrections are made.

14 is a diagram schematically illustrating the position correction inspection of the ground water image in the digital topographic map system according to the present invention.

A description with reference to FIGS. 1 to 14 is as follows.

S100 and S110; Calibration check phase and digital topographic map update phase

As shown in FIG. 14 (b), the digital topographic map updating module 157 includes the ground water images DI ″, SI1, and SI2 neighboring each other in the zone image ZI generated by the ground water position correction module 156. , The difference between the third angles c1 and c2 of the line segments R1 "to R3" between the numerical coordinate values of SI3) and the fourth angles of the line segments between the field coordinate values of the ground object S is within the reference range. In this case, the general information stored in the map information storage unit 130 is linked to each ground water image to update the digital topographic map and store the numerical data in the numerical data storage unit 140.

In more detail, the digital topographic map updating module 157 is a numerical value of the ground water images DI ", SI1, SI2, and SI3 neighboring each other in the zone image ZI like the ground water position correction module 156. Line segments R1 "through R3" are generated between the coordinate values. The third angles c1 and c2 between the generated line segments R1 "through R3" are identified. , SI1, SI2, SI3) checks the field coordinates of the actual ground object S, and checks the line segment between the field coordinates. The fourth angle between the line segments thus identified is calculated and compared with the third angles c1 and c2 of the numerical coordinate values. As a result of the comparison, if the difference between the fourth site angle and the third site angle c1 and c2 of the numerical coordinate value is within the reference range, the digital topographic map update module 157 corrects the ground object corrected by the groundwater position correction module 156. It is determined that the image DI " is legitimate and updates and corrections of the digital topographic map by linking the general information of the ground object S stored in the map information storage unit 130, namely, the name and address of the ground object, by ground image. To complete.

On the other hand, if the difference between the fourth coordinate angle and the third coordinate angle (c1, c2) of the field coordinate value and the third coordinate angle (c1, c2) of the numerical coordinate value is outside the standard range, the position of the ground object image (DI "), etc. It is determined that it is unfair, and re-confirms the reference position points SP1 to SP3 based on the arbitrary coordinate system AX and repeats the above-described generation process.

As a result, the present invention completes the generation and editing of the ground object image DI ″ according to the reference position of the digital topographical map, and corrects all generation errors of the digital topographical map.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later And it will be understood that various modifications and changes of the present invention can be made without departing from the scope of the art.

100; Digital topographic system a1, a2; First square AX; Arbitrary coordinate system
AX1, AX1 ', AX2, AX2', AX3, AX3 '; Baseline b1, b2; 2nd angle
c1, c2; Third angle DI, DI1, DI2; Ground Water Image
F1; Ground water L1; Connecting axis
L2, L3, L4; Connecting longitudinal axis P1; Numeric coordinate value P2; Field coordinate value
R1 to R3; Line segment SP1 to SP9; Location point
SP4 ', SP8'; Crossing point SX; Reference axis SY; Reference vertical axis
XL, YL1, YL2; Coordinate line

Claims (1)

A ground image storage unit for storing and managing ground image information; A ground water image storage unit configured to store and manage the ground water image of the ground water image, the area image including the ground water image, and the ground water image for each version; The field coordinates of the ground, the reference coordinates that are the field coordinates of the zone image and the reference position, the numerical coordinates of the ground water image, the nearest distance value according to the field coordinates between neighboring grounds, A map information storage unit for storing and managing general information; DB, consisting of a numerical data storage for storing data of the digital topographic map;
Analyze the ground image to extract the shape of the ground and identify nine reference positions located in three rows and three columns in the ground area.The reference coordinate values of neighboring reference positions are the same ground image with one of the X and Y axes. Analysis module; A zone information generation module for generating a zone image by allowing the first ground image of the ground object of each ground zone to be drawn, and inserting a reference position point of the reference position into the zone image; The reference horizontal axis and the reference vertical axis intersecting the reference position points of one reference position located at the center of the nine reference positions positioned in the three rows and three columns are respectively generated in the zone image, and the reference position points of the reference position located at the center and In addition, a connection horizontal axis and a connection vertical axis connecting the reference position points of the eight reference positions positioned around the horizontal and longitudinal directions, respectively, are generated in the zone image. A reference point analysis module for identifying a reference point on the connection vertical axis and designating the reference point as a flow target point; The connecting horizontal axis and the connecting vertical axis parallel to the reference horizontal axis and the reference vertical axis, respectively, are extended to form a base line in the zone image, and the flow target point deviated from the base line in the zone image to the position of a corresponding intersection point between the base lines An image pixel flow module for distorting the image in pixel units through a requipy technique to move the image pixel, thereby transforming an image within a reference range of the flow target point from a zone image; Divide the coordinate lines between the reference position points based on the reference coordinate value of the reference position point to generate an arbitrary coordinate system in the zone image transformed by the image pixel flow module, and the numerical value for each first ground image based on the arbitrary coordinate system. If the interval between the coordinate lines is different for each section of the reference position point, the coordinate values are extracted, and the arrangement position is corrected so that all coordinate lines constituting the arbitrary coordinate system have equal intervals, and the first ground object is adjusted to the corrected arbitrary coordinate system. A coordinate data generation module for correcting a position and a shape of an image with a second ground image; Check the recent distance between the neighboring second ground image according to the numerical coordinate value, compare and inspect the distance value between the corresponding second ground image stored in the map information storage, and match the second value according to the distance value. Position check module for moving the position of the ground water image; CNN module for searching the ground object shape of the maximum similarity in the ground water image storage unit by analyzing the shape of the second ground object image inspected by the position checking module and performing an image search based on a convolutional neural network (CNN). ; In the ground water image storage unit, the ground water image storage unit searches for the previous ground water image having the numerical coordinate value within the reference range from the numerical coordinate value of the second ground water image, and replaces the ground surface image with the previous ground water image. A ground image correction module for correcting the third ground image, but replacing the second ground image with the ground shape searched by the CNN module if the previous ground image is not found; The difference between the first angle between the numerical coordinate value of the third ground object image and the line segment connecting three or more reference position points, and the second angle between the field coordinate value of the corresponding ground object and the line segment connecting the three or more reference position points, respectively. If the value exceeds the reference range, the ground coordinate position correction module for correcting the numerical coordinate value to a position point on the arbitrary coordinate system corresponding to the second angle, and to correct the fourth ground image by moving the third ground image Digital topographic correction unit
A digital topographical map system for updating a digital topographical coordinate data according to a local area, comprising: a.

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