Digital map production system for aligning actual measurement point information with digital image

Abstract

The present invention relates to a digital map production system, and more specifically, to a digital map production system characterized by including a digital map storage unit, a measured point information collection unit, an image matching unit, and a digital map correction unit, wherein the system identifies whether there is an error by comparing a representative image among the digital images collected based on field information of the measured point with the detailed information of the corresponding feature, and can match the measured point information and the digital image by GNSS coordinates so that a representative image for each feature can be collected and configured in the digital map even without receiving a representative image for the feature.

Description

Technology Field

[0001] The present invention relates to a digital map production system, and more specifically, to a digital map production system capable of matching actual measurement point information with digital images according to GNSS coordinates. Background Technology

[0003] Generally, a digital map refers to a map that represents geographical and topographical content using numerical data. Examples include nautical charts that show water depth numerically and topographic survey maps that show the relief of the terrain. In other words, a digital map applies numerical information to a drawn image while expressing the geographical and topographical features of a specific point.

[0004] The construction of a digital map is completed through the following various processes. First, after a paper map is converted into a digital map format through digitizing or scanning, it undergoes procedures to correct various input errors.

[0005] Next, through coordinate transformation, the data is converted into an actual coordinate system to suit the user's purpose, and a topological structure is established to identify the relative positionalities and relationships between spatial objects. Subsequently, attribute data related to each geometric data is input into the digital map that has undergone the establishment of the topological structure.

[0006] In this case, the aforementioned attribute data includes various identifier information. For example, the Unique Feature Identifier (UFID) is used as an identifier for topographic features in the digital maps of the National Geographic Information Institute. This refers to a single identifier uniquely assigned to a topographic feature, representing location information, managing agency, and other attribute information assigned to the feature. It consists of agency codes, map sheet numbers, topographic feature identification codes, and serial number fields, and is used as an identifier for linking with other spatial information or for cross-referencing between topographic features for the management, search, and utilization of the features.

[0007] Digital maps produced in this way enable faster and more accurate map searching compared to paper maps, and their superior information management and usability allow for more effective support for various planning and decision-making.

[0008] Figure 1 is a schematic image showing the display of a representative image for a specific feature image in a digital map image.

[0009] As described above, the digital map includes a digital map image (M) formed by combining a road image (RO) and a feature image (BO) based on GNSS coordinates, detailed information such as the names and specifications of the roads and features displayed on the digital map image (M), and captured images (CP) collected by capturing surrounding images of the roads and features in the field using a Mobile Mapping System (MMS) in a road view manner.

[0010] Therefore, users can visually grasp the layout of roads and features in a specific area through the digital map, and check detailed information about the corresponding roads and features by clicking on the road image (RO) and feature image (BO). Additionally, users can visually check the on-site appearance of the roads and features by popping up captured images (CP) of the roads and features on the digital map image (M).

[0011] Since urban areas are composed of numerous roads and features, digital maps of urban areas consist of a vast number of road images (RO) and feature images (BO). However, as the construction and demolition of roads and features occur frequently in urban areas, the editing of the road images (RO) and feature images (BO) included in the digital map image (M) must also be performed frequently. Furthermore, to enable digital map users to visually perceive changes on-site during the construction and demolition of roads and features, video footage (CP; hereinafter 'video footage') must also be frequently collected as representative images of the roads and features subject to construction or demolition, particularly the features themselves.

[0012] However, since the photographic images (CPs) of features in conventional digital maps were taken from various angles to represent the external appearance of the features, there was a difference between the appearance of the features seen directly by users in the field and the photographic images (CPs) that popped up on the digital map. In other words, the photographic images (CPs) that pop up on conventional digital maps had significantly low realism.

[0013] Meanwhile, the representative images of specific features included in the digital map were provided directly by the rights holders or managers, etc. (hereinafter referred to as "rights holders") of the relevant features. Therefore, if a representative image was not provided separately, the representative image of the feature could not be displayed in the feature image (BO) of the digital map; consequently, users of the digital map had to identify their current location and find their destination solely based on the feature image (BO) and name displayed on the map.

[0014] Ultimately, a technology was required that allows users to verify the actual site appearance of a feature through its representative image on a digital map, and to collect and compile representative images for each feature image (BO) included in the digital map without having to receive the feature representative images individually.

[0015] The matters described above as background technology are intended solely to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. The problem to be solved

[0017] The present invention aims to solve the problems of the aforementioned prior art by providing a digital map production system capable of aligning digital images by GNSS coordinates with information from a measured point, which identifies whether there is an error by comparing a representative image among the digital images collected based on field information of the measured point with detailed information of the corresponding feature.

[0018] In addition, another objective of the present invention is to provide a digital map production system that can match digital images by GNSS coordinates with actual measurement point information, which can be configured on a digital map by collecting representative images for each feature without receiving representative images for the features.

[0019] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description of the present invention. means of solving the problem

[0021] The configuration of the present invention for achieving the above purpose comprises: a digital map storage unit that stores a road image and a feature image in a layer format constituting a digital map image as data according to absolute coordinate values, which are digital coordinates; and a first collected information storage unit comprising: a first captured image storage part that stores a first captured image collected by video recording at a shooting point while moving first along a designated path, wherein the first captured image has the first absolute coordinate value of the shooting point recorded and stored; and a first vector distance storage part that stores a first vector distance collected by measuring the aiming angle and distance value of a feature by irradiating a laser pulse signal radially from a measurement point during the first movement, wherein the first vector distance has the first absolute coordinate value of the measurement point recorded and stored. A secondary collected information storage unit comprising: a second captured image storage part that stores a second captured image collected by video recording at a shooting point while moving secondarily along the same path as the first movement path, wherein the second captured image has the second absolute coordinate value of the shooting point recorded and stored; and a second vector distance storage part that stores a second vector distance collected by measuring the aiming angle and distance value of a feature by irradiating a laser pulse signal radially from a measurement point during the second movement, wherein the second vector distance has the second absolute coordinate value of the measurement point recorded and stored; an information data storage unit that stores detailed information regarding the names of the target road and the feature, respectively, and text posted on the outer wall of the feature, and a representative image linked to the feature image based on the center coordinate value of the feature; a reference point information storage unit that stores the reference coordinate value and unique code of a location where a reference point node is installed on the ground; and a digital map storage unit equipped with these components; and an absolute coordinate measurement unit that measures the first and second absolute coordinate values ​​of a means of movement moving along a designated path. Multiple cameras arranged radially around a means of transportation to capture surrounding images and generate first and second captured images, and to verify the first and second absolute coordinate values ​​of the shooting point through an absolute coordinate measuring unit;A vector distance measuring unit that radiates a laser pulse signal to measure the aiming angle and distance values ​​of an object relative to a measurement point, collects first and second vector distances, and verifies the first and second absolute coordinate values ​​of the measurement point through an absolute coordinate measuring unit; a data classification unit that moves along a designated path, classifies the collected first and second absolute coordinate values, first and second captured images, and first and second vector distances into data collected during the first movement and data collected during the second movement, records the aiming angle of the camera in the first and second captured images, and stores them in the first collected information storage unit and the second collected information storage unit, respectively; a reference point signal detection unit that transmits a designated frequency signal for communication with a reference point node, receives a unique code included in the reply signal of the reference point node, and verifies the reference coordinate values ​​of the reference point node through a search in the reference point information storage unit; A coordinate error correction unit that compares the absolute position value of the actual point information collection unit, measured based on the reference coordinate values ​​of at least two reference point nodes, with the first and second absolute coordinate values ​​of the actual point information collection unit measured through an absolute coordinate measurement unit to check for errors, and corrects the first and second absolute coordinate values ​​according to the said error; an actual point information collection unit mounted on a means of transportation; and a shortest position verification unit that, based on the absolute coordinate information by location confirmed through the combination of the first and second vector distances and the first and second absolute coordinate values ​​collected by the actual point information collection unit, checks the center coordinate value of the center point of the feature from the centerline of the road and the centerline coordinate value of the point located at the shortest distance in a designated direction for each feature. A matching target search unit that checks the first and second absolute coordinate values ​​of the nearest shooting point from the center line coordinate values ​​and searches for the first and second captured images in which the corresponding first and second absolute coordinate values ​​are recorded in the first and second captured image storage parts of the first and second collection information storage units; an image search unit that selects the first and second captured images in which the target object is captured in a straight-line distance direction from the searched first and second captured images by checking the aiming angle and confirms them as matching targets for selecting the representative image of the object;An image matching unit equipped with an image selection unit that, in a digital map image where a road image and a feature image are merged and displayed on an input / output means, displays a first captured image and a second captured image that are matching targets for a feature image selected by an operator in a layer format, and executes to confirm the first captured image or the second captured image selected by the operator as a representative image; and a digital map editing unit that updates the digital map by linking the first captured image or the second captured image to the feature image of the corresponding feature based on the center coordinate values ​​recorded in the first captured image or the second captured image confirmed as the representative image; a representative image replacement unit that replaces the existing representative image linked to the feature image of the corresponding center coordinate value in the digital map image with the newly entered representative image when a representative image with the center coordinate values ​​of the feature is newly entered; and an error detection unit that analyzes the image of the confirmed representative image using CNN (Convolutional Neural Networks) technology to search for text posted on the corresponding feature image, and checks for errors by comparing it with the text of detailed information regarding the corresponding feature stored in an information data storage unit. It is characterized by including a numeric map correction unit equipped with a warning unit that displays an error warning using a pop-up window when an error is detected by an error detection unit.

[0022] In a digital map production system capable of aligning actual point information and numeric images by GNSS coordinates according to an embodiment of the present invention, the actual point information collection unit preferably further comprises: an installation support unit mounted on the upper part of a moving means; an installation coupling plate coupled to the upper part of the installation support unit; a plurality of radiation supports coupled to the upper part of the installation coupling plate; a heat radiation plate coupled to the upper part of the radiation supports; a heat transfer support unit coupled to the upper part of the heat radiation plate; and a heat transfer plate coupled to the upper part of the heat transfer support unit, wherein a camera is coupled to the upper part thereof.

[0023] In a digital map production system capable of aligning actual point information and GNSS coordinate-specific numeric images according to an embodiment of the present invention, the heat transfer support member preferably comprises: a base member that contacts the lower part of a heat transfer plate; an elastic support member disposed inside the base member, with one side contacting the lower base of the base member and the other side contacting the upper base of the base member to elastically support the lower base and the upper base; an elastic guide member disposed spaced apart from the elastic support member, with one side fixed to the lower base and the other side fixed to the upper base, and one side inserted into the other side and elastically supported in the inserted state; a first heat transfer member disposed in the center of the base member, with the upper side contacting the heat transfer plate and the other side exposed to the outside of the heat radiation plate to transfer heat to the atmosphere; and a plurality of second heat transfer members disposed spaced apart from the first heat transfer member, with the upper side contacting the heat transfer plate and the other side exposed to the outside of the heat radiation plate to transfer heat to the atmosphere.

[0024] In a digital map production system capable of matching actual measurement point information and GNSS coordinate-specific numeric images according to an embodiment of the present invention, the elastic support unit preferably comprises: a first support base fixed to the lower surface of an upper base; an elastic member with its upper portion fixed to the first support base; and a second support base fixed to the upper surface of a lower base and connected to the lower portion of the elastic member.

[0025] In a digital map production system capable of aligning actual point information and GNSS coordinate-based numeric images according to an embodiment of the present invention, the elastic guide unit preferably comprises: a guide body fixed to the lower surface of an upper base; a lifting guide, the upper end of which is inserted into a body groove formed in the lower part of the guide body and the lower end of which is fixed to the upper surface of a lower base; and a guide elastic member disposed inside the body groove to elastically support the upper part of the lifting guide.

[0026] In a digital map production system capable of matching actual point information and GNSS coordinate-based numeric images according to an embodiment of the present invention, the first heat transfer member is formed with a larger contact area with the heat transfer plate than each second heat transfer member, and the elastic support member and elastic guide member elastically press the heat transfer plate in the direction of the camera.

[0027] In a digital map production system capable of matching actual point information and GNSS coordinate-specific numeric images according to an embodiment of the present invention, it is preferable that the first heat transfer member penetrates the lower first hole formed in the lower base and is coupled to the upper first hole formed in the upper base to make surface contact with the heat transfer plate, and that the plurality of second heat transfer members penetrate each lower second hole formed in the lower base and are coupled to each upper second hole formed in the upper base to make surface contact with the heat transfer plate.

[0028] In a digital map production system capable of matching actual point information and GNSS coordinate-specific numeric images according to an embodiment of the present invention, it is preferable that the first heat transfer member is formed in a cylindrical shape with a solid interior, and the second heat transfer member is formed in a plate shape with a solid interior.

[0029] In a digital map production system capable of aligning actual measurement point information and GNSS coordinate-specific digital images according to an embodiment of the present invention, the installation support unit preferably comprises: an installation support case that is positioned at the bottom of a camera and has a hollow interior; an up-and-down adjustment part that is coupled to the center of the inner lower surface of the installation support case and is movable up and down; a pair of left and right fixing parts that are coupled to both sides of the inner lower surface of the installation support case and are positioned to face each other with the up-and-down adjustment part in between; and a pair of fixing supplementary parts provided at the bottom of the installation coupling plate.

[0030] In a digital map production system capable of aligning actual measurement point information and GNSS coordinate-specific numeric images according to an embodiment of the present invention, the left and right fixing unit preferably comprises: an up-and-down operating part coupled to the inner lower surface of an installation support case so as to be movable up and down; a fixed support part spaced apart from the up-and-down operating part and fixedly coupled to the inner lower surface of the installation support case; a lower fastening plate coupled transversely to the upper end of the fixed support part and having a plurality of lower fastening teeth; and an upper fastening plate having one end rotatably coupled to the upper end of the up-and-down operating part, and a central part rotatably coupled to the upper part of the lower fastening plate and having a plurality of upper fastening teeth. Effects of the invention

[0032] The present invention, having the above configuration, can identify whether there are errors by comparing a representative image among the numerical images collected based on field information of the actual measurement point with the detailed information of the corresponding feature, thereby having the effect of providing a reliable map service that adapts to changes in the field.

[0033] In addition, the present invention has the advantage of being able to read a digital map and identify a location because the user can check the actual appearance of the feature itself through a representative image on the digital map.

[0034] Furthermore, the present invention has the effect of improving the map service function of a digital map because it can collect representative images for each feature and configure them on a digital map without receiving representative images for the features. Brief explanation of the drawing

[0036] It should be noted that the attached drawings are provided as examples for reference to help understand the technical concept of the present invention, and the scope of the rights of the present invention is not limited by them. Figure 1 is an image schematically showing the display of a representative image for a specific feature image in a digital map image. FIG. 2 is a block diagram illustrating the configuration of a digital map production system capable of matching actual measurement point information with digital images by GNSS coordinates according to an embodiment of the present invention. FIG. 3 is a flowchart sequentially illustrating the process of inputting a representative image of a digital map based on a digital map production system according to an embodiment of the present invention. FIG. 4 is a schematic diagram illustrating the plan view of an actual site in which the image matching unit of a digital map production system according to an embodiment of the present invention checks the center coordinate value of the center point of a feature from the center line of a road and the center line coordinate value located at the shortest distance in a designated direction for each feature. FIG. 5 is a schematic diagram illustrating the plan view of an actual site where the actual measurement point information collection unit of a digital map production system according to an embodiment of the present invention communicates with a reference point node. FIG. 6 is a schematic diagram illustrating a digital map production system according to an embodiment of the present invention measuring a captured image and a vector distance of a feature within the range of a shooting area and a vector distance measurement area for the feature. FIG. 7 is a schematic diagram illustrating a digital map production system according to an embodiment of the present invention displaying a firstly collected image and a secondly collected image in a pop-up window. FIG. 8 is a captured image showing the search results of text posted on a feature image in a representative image selected by a digital map production system according to an embodiment of the present invention. FIG. 9 is a schematic diagram illustrating a digital map production system according to an embodiment of the present invention displaying an error warning using a pop-up window. FIG. 10 is a drawing showing the installation of a camera of a measurement point information collection unit according to an embodiment of the present invention. FIG. 11 is a drawing showing the internal view of an installation support unit according to an embodiment of the present invention. FIG. 12 is a drawing showing a state in which a heat transfer support member according to an embodiment of the present invention is mounted between a heat transfer plate and a heat radiation plate. FIG. 13 is a schematic diagram showing a heat transfer support member according to an embodiment of the present invention. FIG. 14 is a schematic diagram showing the first heat transfer section and the second heat transfer section of a heat transfer support member according to an embodiment of the present invention. Specific details for implementing the invention

[0037] Hereinafter, the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement it. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0038] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0039] In addition, terms or words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0041] FIG. 2 is a block diagram illustrating the configuration of a digital map production system capable of matching actual measurement point information and digital images by GNSS coordinates according to an embodiment of the present invention.

[0042] The digital map production system according to the present invention comprises a digital map storage unit (10) for storing data, a field measurement point information collection unit (20) for collecting information such as the appearance, specifications, and location of a specific feature for updating the digital map, an image matching unit (30) for collecting and selecting a shooting image (CP) which is a digital image of a target feature by moving along the same path at least twice, and a digital map correction unit (40) for correcting a representative image of the digital map with the selected first and second shooting images (CP) for updating the digital map.

[0043] The digital map storage unit (10) may be a database server for storing and managing various classified data, or a Hard Disk Drive (HDD) configured in a general terminal. The digital map storage unit (10) includes a digital map storage unit (11) that stores a road image (RO) and a feature image (BO) in a layer format constituting the digital map image (M) as data according to absolute coordinate values, which are GNSS (Global Navigation Satellite System) coordinates; A first collected information storage unit (13) comprising: a first captured image storage part (not shown) that stores a first captured image collected by video recording at a shooting point while moving along a designated path, wherein the first captured image has the first absolute coordinate value of the shooting point recorded and stored; and a first vector distance storage part (not shown) that stores a first vector distance collected by measuring the aiming angle and distance value of an object (Bd) by irradiating a laser pulse signal radially from a measurement point during the first movement, wherein the first vector distance has the first absolute coordinate value of the measurement point recorded and stored. A second collection information storage unit (14) comprising a second shooting image storage part (not shown) that stores a second shooting image collected by video recording at a shooting point while moving secondarily along the same path as the first movement path, wherein the second absolute coordinate value of the shooting point is recorded and stored in the second shooting image, and a second vector distance storage part (not shown) that stores a second vector distance collected by measuring the aiming angle and distance value of a feature (Bd) by irradiating a laser pulse signal radially from a measurement point during the second movement, wherein the second absolute coordinate value of the measurement point is recorded and stored in the second vector distance; an information data storage unit (15) that stores detailed information regarding the names of the target road and the feature, respectively, and text posted on the outer wall of the feature, and a representative image (RP) linked to the feature image (BO) based on the center coordinate value of the feature (Bd); It is equipped with a reference point information storage unit (16) that stores the reference coordinate value and unique code of the location where the reference point node is installed on the ground.

[0044] The actual measurement point information collection unit (20) is mounted on a vehicle and performs GNSS absolute coordinate value measurement, vector distance measurement, and image capture for surrounding objects. The actual measurement point information collection unit (20) may be an MMS. The actual measurement point information collection unit (20) includes: an absolute coordinate measurement unit (21) that measures the first and second absolute coordinate values ​​of a vehicle moving along a designated path; multiple cameras (22) that are arranged radially around the vehicle to capture surrounding images and generate first and second captured images, and verify the first and second absolute coordinate values ​​of the shooting point through the absolute coordinate measurement unit (21); and a vector distance measurement unit (23) that irradiates a laser pulse signal radially to measure the aiming angle and distance value for an object (Bd) relative to the measurement point, collects the first and second vector distances, and verifies the first and second absolute coordinate values ​​of the measurement point through the absolute coordinate measurement unit (21). A data classification unit (24) that classifies the first and second absolute coordinate values, first and second captured images, and first and second vector distances collected while moving along a designated path into data collected during the first movement and data collected during the second movement, and records the aiming angle of the camera (22) in the first and second captured images and stores them in the first collected information storage unit and the second collected information storage unit, respectively; a reference point signal detection unit (25) that transmits a designated frequency signal for communication with a reference point node, receives a unique code included in the reply signal of the reference point node, and checks the reference coordinate value of the reference point node through a search of the reference point information storage unit (16); It is equipped with a coordinate error correction unit (26) that checks for an error by comparing the absolute position value of the actual point information collection unit (20) measured based on the reference coordinate values ​​of at least two reference point nodes with the first and second absolute coordinate values ​​of the actual point information collection unit (20) measured through the absolute coordinate measurement unit (21), and corrects the first and second absolute coordinate values ​​according to the error.

[0045] The image matching unit (30) may be mounted on a moving vehicle together with the actual measurement point information collection unit (20) so that subsequent processes are carried out simultaneously with the collection of information, or it may be located independently of the actual measurement point information collection unit (20) to receive the collected data from the actual measurement point information collection unit (20) and carry out subsequent processes. The image matching unit (30) includes a shortest location verification unit (34) that verifies, for each feature, the center coordinate value of the feature center point (S1; see FIG. 4) from the center line of the road (RC; see FIG. 4) and the center line coordinate value of the point (S2, S2'; see FIG. 4) located at the shortest distance in the designated direction, based on the absolute coordinate information for each location verified through the combination of the first and second vector distances and the first and second absolute coordinate values ​​collected by the actual measurement point information collection unit (20); It is equipped with: a matching target search unit (31) that checks the first and second absolute coordinate values ​​of the nearest shooting point from the center line coordinate values ​​and searches for the first and second shooting images in which the corresponding first and second absolute coordinate values ​​are recorded in the first and second shooting images storage parts of the first and second collection information storage units (13, 14); an image search unit (32) that selects the first and second shooting images (CP) in which the target object is photographed in a straight line direction from the searched first and second shooting images (CP) by checking the aiming angle and confirms them as matching targets for selecting the representative image of the object; and an image selection unit (33) that displays the first and second shooting images, which are matching targets for the object image (BO) selected by the operator, in a layer format in a numeric map image (M) in which the road image (RO) and the object image (BO) are merged and displayed on an input / output means (not shown), and executes to confirm the first or second shooting image selected by the operator as the representative image (RP).

[0046] The digital map correction unit (40) is equipped with: a digital map editing unit (43) that updates the digital map by linking the first or second captured image, which has been confirmed as the representative image (RP), to the feature image (BO) of the corresponding feature (Bd) based on the recorded center coordinate value; a representative image replacement unit (44) that replaces the existing representative image (RP) linked to the feature image (BO) of the corresponding center coordinate value in the digital map image (M) with the newly entered representative image (RP) when the representative image (RP) with the recorded center coordinate value of the feature (Bd) is newly entered; an error detection unit that analyzes the image of the confirmed representative image using CNN (Convolutional Neural Networks) technology to search for text posted on the corresponding feature image and checks for errors by comparing it with the text of detailed information about the corresponding feature stored in the information data storage unit; and a warning unit (46) that displays an error warning message using a pop-up window when an error is confirmed by the error detection unit. Through this update, the digital map image (M) is automatically corrected to the latest version, thereby increasing the reliability of the digital map.

[0047] To explain the digital map production system described above, the operation process of the digital map production system is explained with reference to the drawings.

[0049] FIG. 3 is a flowchart sequentially illustrating the process of inputting a representative image of a digital map based on a digital map production system according to an embodiment of the present invention; FIG. 4 is a schematic diagram illustrating the planar view of an actual site where the image matching unit of the digital map production system according to an embodiment of the present invention checks the center coordinate value of the center point of a feature from the center line of a road and the center line coordinate value located at the shortest distance in a designated direction for each feature; FIG. 5 is a schematic diagram illustrating the planar view of an actual site where the actual measurement point information collection unit of the digital map production system according to an embodiment of the present invention communicates with a reference point node; FIG. 6 is a schematic diagram illustrating the digital map production system according to an embodiment of the present invention measuring a captured image and vector distance for a feature within the range of the shooting area and the vector distance measurement area for the feature; FIG. 7 is a schematic diagram illustrating the digital map production system according to an embodiment of the present invention displaying the captured image collected in the first stage and the captured image collected in the second stage in a pop-up window; and FIG. 8 is the present invention FIG. 9 is a schematic diagram illustrating the appearance of a digital map production system according to an embodiment of the present invention displaying an error warning using a pop-up window.

[0050] S10; Information collection step for collecting representative images

[0051] As shown in FIG. 6, a measurement point information collection unit (20) mounted on a means of transportation (CA), such as a general vehicle or a worker moving on foot, moves along a designated path and moves two or more times (a, b) along the designated path to collect information about surrounding images and features (Bd) for performing the Road View function, and an absolute coordinate measurement unit (21) measures the GNSS absolute coordinate value where the means of transportation (CA) is currently located. However, as the means of transportation (CA) moves along the designated path in two stages, the actual point of movement may change slightly depending on the road environment, and a difference may occur in the absolute coordinate values ​​measured during the first and second movements due to measurement errors of the absolute coordinate measurement unit (21). Therefore, the camera (22) of the measurement point information collection unit (20) checks the first and second absolute coordinate values ​​of the shooting point at the time of image capture.

[0052] A number of cameras (22) are arranged radially around a means of transport (CA) to capture surrounding images and generate first and second captured images (CP). The cameras (22) may perform a shooting operation at regular time intervals starting from the initial shooting time, or may perform a shooting operation when the means of transport (CA) enters within a designated coordinate range. The data classification unit (24) checks the aiming angle during the shooting operation of the cameras (22) and records it in the first and second captured images (CP).

[0053] In this embodiment, the camera (22) can capture a feature (Bd) around the road (R) according to the aforementioned shooting method to collect a feature image (BdI) and draw a feature image (BO). The number of cameras (22) of the actual measurement point information collection unit (20) is configured to capture a panoramic image of the surroundings of the means of transportation (CA), and in this embodiment, eight cameras are configured. For reference, the camera (22) of the present invention outputs a digital image and may be a CCD (charge-coupled device) camera. In the first and second captured images (CP) generated by the camera (22), information regarding the number of movements of the designated path (the first movement is the first, the second movement is the second), the absolute coordinate value of the shooting point, and the shooting direction (aiming angle) is input as described above, and is stored in the first and second captured image storage parts of the first and second collection information storage units (13, 14) of the actual measurement point information collection unit (10), respectively.

[0054] The vector distance measuring unit (23) measures the vector distance to an object (Bd) as shown in FIG. 6 by continuously irradiating a laser pulse signal several times in a radial direction simultaneously with the movement of a means of transportation (CA) along the road (R). The vector distance measuring unit (23) may be a general Lidar (Light Detection And Ranging). As described above, since the vector distance measurement of the vector distance measuring unit (23) is continuous, the vector distance used to select the representative image (RP) among the first and second captured images (CP) is the vector distance measured at the time of the camera (22)'s shooting operation. At the point where the vector distance measuring unit (23) measured the first and second vector distances (hereinafter 'measurement point'), the first and second absolute coordinate values ​​are recorded as in the first and second captured images and are respectively stored in the first and second vector distance storage parts of the first and second collection information storage units (13, 14).

[0055] The data classification unit (24) moves along a designated path and classifies the collected first and second absolute coordinate values, first and second captured images (CP), and first and second vector distances into data collected during the first movement (a1 to a6) and data collected during the second movement (b1 to b6), and records the aiming angle of the camera (22) at the time of shooting in the first and second captured images (CP) and stores them in the first collected information storage unit (13) and the second collected information storage unit (14), respectively. To explain this in more detail, as described above, the actual measurement point information collection unit (20) moves twice along a designated path while mounted on a means of transportation (CA), and measures and collects data such as the first and second absolute coordinate values, first and second captured images (CP), and first and second vector distances according to each movement. Accordingly, in order to classify the numerous collected data, the first and second captured images (CP) are classified into movement sequence numbers, 'first movement (a1 to a6)' and 'second movement (b1 to b6)', and the first and second captured images (CP) and first and second vector distances, which are data collected during the first movement (a1 to a6) or second movement (b1 to b6), are classified based on the first and second absolute coordinate values ​​of the means of movement (CA) at the time of collection. Furthermore, in the case of the first and second captured images (CP), the aiming angle of the camera (22) is input, so the first and second captured images (CP) and first and second vector distances collected from the first and second absolute coordinate values ​​closest to each other can be searched in the first and second collection information storage units (13, 14), respectively.

[0056] S20; Step for correcting coordinate errors of a digital map through a reference point

[0057] While the vehicle (CA) is moving for the purpose of collecting field information for updating the digital map, the reference point signal detection unit (25) transmits a designated frequency signal in real time. Since the effective communication range of the frequency signal is limited, if the vehicle (CA) is far from the reference point nodes (SP1 to SP3), the reference point nodes (SP1 to SP3) cannot receive the frequency signal transmitted by the reference point signal detection unit (25).

[0058] If the reference point nodes (SP1 to SP3) do not detect the transmitted frequency signal of the reference point signal detection unit (25), the reference point signal detection unit (25) does not receive the reply signal of the reference point nodes (SP1 to SP3), so the first and second absolute coordinate values ​​measured by the absolute coordinate measurement unit (21) are determined as the current position values. However, when the reference point nodes (SP1 to SP3) enter the communication effective range of the frequency signal, the reference point nodes (SP1 to SP3) transmit a reply signal, and the reference point signal detection unit (25) receives the unique code included in the reply signal of the reference point nodes (SP1 to SP3) and checks the reference coordinate values ​​of the reference point nodes (SP1 to SP3) through a search of the reference point information storage unit (16). The reference coordinate values ​​are standard coordinate values ​​of the reference point nodes (SP1 to SP3) and are used as the highest priority reference value among the GNSS coordinate values.

[0059] The coordinate error correction unit (26) checks for errors by comparing the absolute position value of the actual measurement point information collection unit (20), measured based on the reference coordinate values ​​of at least two reference point nodes (SP1 to SP3), with the first and second absolute coordinate values ​​of the actual measurement point information collection unit (20), measured through the absolute coordinate measurement unit (21). Then, the first and second absolute coordinate values ​​measured by the absolute coordinate measurement unit (21) are corrected to match the error.

[0060] Subsequently, if the reference point nodes (SP1 to SP3) move out of the communication effective range and the reference point signal detection unit (25) does not receive a reply signal, the actual measurement point information collection unit (20) determines the current location using the first and second absolute coordinate values ​​measured by the absolute coordinate measurement unit (21).

[0061] S30; Step to identify the point located at the shortest distance from the feature

[0062] The shortest location verification unit (34) of the image matching unit (30) verifies the center coordinate value of the center point (S1) of the feature (Bd) and the center line coordinate value of the point (S2, S2') located at the shortest distance in the designated direction for each feature (Bd) from the center line (RC) of the road (R). The center point (S1) of the feature (Bd) must be verified in order to merge the feature image (BO) into the digital map image (M). Since the absolute coordinate information for each location on the digital map image (M) and the shape of the feature image (BO) can be identified through the combination of the first and second absolute coordinate values ​​and the first and second vector distances measured by the actual measurement point information collection unit (20), the center coordinate value of the feature (Bd) as well as the center line coordinate value can be calculated based on this absolute coordinate information. In addition, the location and shape of the road (R) can also be identified based on the aforementioned absolute coordinate information, and the center line location and coordinate value of the road (R) can be calculated through the information identified in this way. Since the technique of calculating the absolute coordinates of an unmeasured location using the first and second absolute coordinates and the first and second vector distances is already a known technique, an explanation thereof is omitted.

[0063] The exposed surface of the feature (Bd) that is not obscured by other features may be the representative surface of the feature (Bd), or there may be a specific surface preferred by the rights holder as a representative image. Therefore, the shortest distance measurement is performed only in the direction of the designated representative surface for each feature (Bd), and the center line coordinate value located at the shortest distance in the said direction from the center coordinate value of the feature (Bd) is identified. As shown in FIGS. 4 and 6, in this embodiment, the center line coordinate value located at the shortest distance from the center coordinate value of the feature (Bd) is a point (S2') located to the south of the feature (Bd). However, if the representative surface of the feature (Bd) is a surface exposed to the east, the center line coordinate value located at the shortest distance from the center coordinate value of the center point (S1) of the feature (Bd) is searched from a road (R) located to the east of the feature (Bd).

[0064] For reference, the point (S2) on the center line (RC) located at the shortest distance from the center point (S1) of the feature (Bd) to the center line (RC) of the road (R) is geometrically the intersection point of the normal passing through the center point (S1) and the center line (RC).

[0065] S40; Image search step for selecting a representative image

[0066] The matching target search unit (31) checks the first and second absolute coordinate values ​​of the shooting point closest to the center line coordinate value based on the absolute coordinate information for each location confirmed through the combination of the first and second vector distances and the first and second absolute coordinate values ​​collected by the actual measurement point information collection unit (20), and searches for the first and second shooting images in which the corresponding first and second absolute coordinate values ​​are recorded in the first and second shooting image storage parts of the first and second collection information storage units (13, 14).

[0067] In this embodiment, the center line coordinate values ​​are assigned to each feature (Bd) by the shortest position verification unit (34), so the selection of a representative image of a specific feature (Bd) is made from the first and second captured images (CP) collected at the first and second absolute coordinate value locations (a3, b3) near the center line coordinate value point (S2) of the feature (Bd).

[0068] For reference, as shown in FIG. 6, the shortest position verification unit (34) verifies other points (S2') in addition to one point (S2) on the center line (RC) located at the shortest distance from the center coordinate value of the object image (BO). Since the point valid as the reference position for the shortest distance is limited to one point (S2) located within the designated direction range, the first and second absolute coordinate values ​​(a5, b5) of the shooting point located near the other point (S2') are excluded from the shooting image search target.

[0069] Continuing, the image search unit (32) selects the first and second captured images (CP) in which the target object (Bd) is captured in a straight line direction from the searched first and second captured images (CP) by checking the aiming angle, and confirms them as matching targets for selecting the representative image of the object (Bd). As described above, the camera (22) of the mapping information collection (20) is installed in multiple numbers centered on the means of transport (CA) to collect captured images in a radial direction. Therefore, when the first and second absolute coordinate values ​​of the shooting point closest to the center line coordinate value are checked, multiple first and second captured images (CP) are searched. However, since the representative image is for a specific object (Bd), one first and second captured image is selected from the multiple first and second captured images in which the aiming angle recorded in each is directed toward the center coordinate value of the object (Bd).

[0070] S50; Representative image selection step

[0071] The image selection unit (33) displays the first captured image (CP1) and the second captured image (CP2), which are matching targets for the feature image (BO) selected by the operator in the digital map image (M) displayed on an input / output means (not shown) in which the road image (RO) and the feature image (Bd) are merged as in Figure 7 (a), in a layer (CPL) format as in Figure 7 (b), and executes to confirm the first captured image (CP1) or the second captured image (CP2) selected by the operator as the representative image (RP).

[0072] In this embodiment, the image selection unit (33) displays the first and second captured images (CP1, CP2), which are matched with each other as shown in Figure 7 (a), in conjunction with the object image (BO) and displays them in a layer (CPL) format on the input / output means. Therefore, the operator can visually check the first and second captured images (CP1, CP2) displayed in a layer (CPL) format.

[0073] When a layer (CPL) displayed on the input / output means is selected by the operator's click, the image selection unit (33) enlarges the corresponding first and second captured images (CP1, CP2) as shown in Figure 7 (b) and displays them in a pop-up window (PU1), and the operator selects a captured image in which the object image (BdI) is relatively clear without obscuring. When a captured image is selected according to the operator's operation, the image selection unit (33) confirms the selected captured image as the representative image (RP).

[0074] S60; Navigation text error check step

[0075] The error detection unit (45) analyzes the image of the confirmed representative image (RP) using Convolutional Neural Networks (CNN) technology to search for text (T) posted on the image of the corresponding object (BdI), and checks for errors by comparing it with the text of detailed information about the corresponding object (Bd) stored in the information data storage unit (15).

[0076] To explain this in more detail, the error detection unit (45) searches for text (T) within a specific range using CNN technology, which is an AI-based deep learning image analysis technology, on the representative image (RP) confirmed by the image selection unit (33). The text (T) thus searched may be a business name, such as a signboard posted on the outer wall of the target object (Bd), as shown in FIG. 8. Since the technology for searching for and extracting text on the screen using CNN technology is already a known technology, a detailed explanation regarding CNN image analysis is omitted.

[0077] The error detection unit (45) compares the text (T) found in the representative image (RP) with the name included in the details of the corresponding object (Bd) or with the text posted on the exterior wall. If the text (T) found in the representative image (RP) is not found in the text of the details, or if the text of the representative image (RP) and the text of the details are identical but the placement location of the text is found to be different by more than a threshold value, the error detection unit (45) determines it as an error.

[0078] S70; Error warning display step

[0079] When an error is detected by the error detection unit (45), the warning unit (46) outputs a pop-up window (PU2) to the operator's terminal (100) to display an error warning message. In this embodiment, information such as the address, name of the object (Bd) of the representative image (RP), and the name of the tenant may be posted in the error warning message. The information listed in the error warning message is information from a digital map that has already been stored in the information data storage unit (15), and the warning unit (46) includes in the warning message the difference between the text (T) newly searched based on the above information and the information.

[0080] S80; Representative image correction step

[0081] The operator checks the error warning displayed on the terminal (100) and performs tasks such as on-site verification, and if a difference is confirmed, updates the detailed information stored in the information data storage unit (15) or deletes or corrects the corresponding text configured in the representative image (RP).

[0082] S90; Input step for representative images by feature image

[0083] The digital map editing unit (43) updates the digital map by linking the first captured image (CP1) or the second captured image (CP2), which has been confirmed as the representative image (RP), to the feature image of the corresponding feature based on the center coordinate values ​​recorded in the first captured image (CP1) or the second captured image (CP2). The representative image (RP) may be blurred for privacy protection, and the text (T) configured in the feature image (BdI) may be corrected in accordance with the details.

[0084] As described above, the information data storage unit (15) stores detailed information including the names of the target road (R) and the feature (Bd), respectively, and a representative image (RP) linked to the feature image (BO) based on the center coordinate value of the feature (Bd). Accordingly, the digital map editing unit (43) can determine the target feature image based on the center coordinate value recorded in the selected captured image.

[0085] Meanwhile, when a representative image replacement unit (44) receives a new representative image (RP) in which the center coordinate value of a feature (Bd) is recorded, it replaces the existing representative image linked to the feature image (BO) of the corresponding center coordinate value in the digital map image (M) with the newly received representative image. Since the digital map production system according to the present invention is a technology that selects a representative image based on a captured image collected during the MMS image collection process for a feature (Bd) for which a representative image has not been selected in the digital map, in the case of a feature (Bd) for which a representative image has already been selected in the digital map, the representative image replacement unit (44) records the center coordinate value in the representative image provided by the rights holder, searches for the representative image of the corresponding center coordinate value based on the said center coordinate value, and replaces it with the newly received representative image.

[0087] FIG. 10 is a drawing showing the installation of a camera of a measurement point information collection unit according to an embodiment of the present invention, and FIG. 11 is a drawing showing the interior of an installation support unit according to an embodiment of the present invention.

[0088] As described above, the actual measurement point information collection unit (20) further comprises an installation support unit (300) mounted on the upper part of a moving means (CA), an installation coupling plate (200) coupled to the upper part of the installation support unit (300), a plurality of radiation supports (230) coupled to the upper part of the installation coupling plate (200), a heat radiation plate (220) coupled to the upper part of the radiation supports (230), a heat transfer support unit (400) coupled to the upper part of the heat radiation plate (220), and a heat transfer plate (210) coupled to the upper part of the heat transfer support unit (400) and having a camera (22) coupled thereto.

[0089] When the heat transfer plate (210) is arranged horizontally on the upper part of the heat transfer support (400) and the heat radiating plate (220) is arranged horizontally on the lower part of the heat transfer support (400), the heat generated from the camera (22) is released to the outside through the heat transfer plate (210), the heat transfer support (400), and the heat radiating plate (220).

[0090] The above plurality of radiation supports (230) are arranged vertically between the heat radiating plate (220) and the installation coupling plate (200), and a space is formed between the heat radiating plate (220) and the installation coupling plate (200) by the plurality of radiation supports (230) so that heat can be smoothly emitted to the outside.

[0091] The above-mentioned installation support unit (300) is positioned at the bottom of the camera (22) and comprises an installation support case (310) with a hollow interior, an up-and-down adjustment part (320), a pair of left-and-right fixing parts (330), and a pair of fixing reinforcement parts (340).

[0092] The above-described vertical adjustment unit (320) is coupled to the center of the inner lower surface of the installation support case (310) and is movable vertically. A pair of supplementary fastening units (321) having a concave groove are coupled to the upper part of the vertical adjustment unit (320).

[0093] The above pair of left and right fixing parts (330) are coupled to both sides of the inner lower surface of the installation support case (310) and are arranged to face each other with the upper and lower adjustment part (320) in between. The pair of left and right fixing parts (330) fix both sides of the installation coupling plate (200).

[0094] The above left and right fixing part (330) includes an up-and-down operating part (331) which is coupled to the inner lower surface of the installation support case (310) so as to be movable up and down, a fixed support part (332) which is spaced apart from the up-and-down operating part (331) and fixedly coupled to the inner lower surface of the installation support case (310), a lower fastening plate (333) which is coupled horizontally to the upper end of the fixed support part (332) and has a plurality of lower fastening teeth (334), and an upper fastening plate (335) which has one end rotatably coupled to the upper end of the up-and-down operating part (331), and a central part rotatably coupled to the upper end of the lower fastening plate (333) and has a plurality of upper fastening teeth (336).

[0095] When the upper and lower operating part (331) moves upward, one end of the upper fastening plate (335) moves upward together, and the other end of the upper fastening plate (335) moves downward, so that the upper fastening tooth (336) and the lower fastening tooth (334) interlock with each other. An installation coupling plate (200) is coupled between the interlocked upper fastening tooth (336) and the lower fastening tooth (334), thereby firmly fixing the camera (22).

[0096] Conversely, when the upper and lower operating part (331) moves downward, one end of the upper fastening plate (335) moves downward together, and the other end of the upper fastening plate (335) moves upward, thereby releasing the engagement between the upper fastening tooth (336) and the lower fastening tooth (334).

[0097] A left and right fastening plate (337) is coupled to the other end of the upper fastening plate (335) so as to be movable left and right, and a left and right elastic member (338) is coupled between the upper fastening plate (335) and the left and right fastening plate (337) to provide elastic force to the left and right fastening plate (337).

[0098] The above left and right fastening plates (337) support the side portions of the radiation support (230) on both sides to prevent the radiation support (230) from shaking, and thereby prevent the camera (22) from shaking. This elastic structure absorbs minute differences in the dimensions of the radiation support (230) and, at the same time, prevents vibrations generated during operation from being transmitted to the camera (22), thereby enabling precise operation.

[0099] The above pair of fixed supplementary members (340) are provided at the bottom of the installation coupling plate (200) and are linked with the vertical adjustment member (320) to perform temporary fixing and position alignment before the camera (22) is fastened.

[0100] Specifically, the fixed reinforcement member (340) comprises a fixed reinforcement case (341) coupled to the lower part of the installation coupling plate (200), a fixed reinforcement elastic member (342) coupled to the inner side of the fixed reinforcement case (341), a fixed reinforcement rod (343) having one end coupled to the fixed reinforcement elastic member (342) and capable of moving left and right inside the fixed reinforcement case (341), a circular fixed fastening part (344) coupled to the other end of the fixed reinforcement rod (343) and capable of being housed inside the fixed reinforcement case (341) or exposed to the outside, and a temporary fixing part (345) mounted to be movable left and right on the inner lower surface of the fixed reinforcement case (341), having one end protruding to the outside of the fixed reinforcement case (341) and the other end contacting the lower surface of the fixed reinforcement rod (343).

[0101] One side of the temporary fixing part (345) is formed in a rod shape and protrudes outside the fixing support case (341), and the other side of the temporary fixing part (345) is formed in a semicircle shape and can contact and support the lower surface of the fixing support rod (343). The vertical width of one side of the temporary fixing part (345) is relatively smaller than the vertical width of the other side of the temporary fixing part (345).

[0102] The diameter of the fixed fastening part (344) is approximately the same as or relatively slightly smaller than the inner upper and lower width of the fixed supplementary case (341), and when the other side of the temporary fixing part (345) contacts the lower surface of the fixed supplementary rod (343), the fixed supplementary rod (343) is vertically displaced upward and compressed and fixed, so that left and right movement is temporarily stopped and fixed.

[0103] Normally, the above temporary fixing part (345) moves toward the fixed fastening part (344) to contact and support the lower surface of the fixed support rod (343), and the fixed fastening part (344) is maintained in a state of being housed inside the fixed support case (341).

[0104] When the upper and lower adjustment part (320) moves upward and comes into contact with the lower surface of the installation coupling plate (200), the temporary fixing part (345) moves in the opposite direction of the fixing fastening part (344) and is separated from the lower surface of the fixing reinforcement rod (343), and the fixing fastening part (344) is ejected to the outside of the fixing reinforcement case (341) by the elastic force of the fixing reinforcement elastic member (342).

[0105] The externally protruding fixed fastening part (344) is inserted into and fixed to the supplementary fastening part (321) having a concave groove, and the camera (22) is fixed to the upper part of the vertical adjustment part (320), and the vertical adjustment part (320) moves downward so that the entire camera moves downward. At this time, the vertical adjustment part (320) can adjust the height of the camera (22) and simultaneously distribute the load.

[0106] With the camera (22) moved downward, a pair of left and right fixing parts (330) are operated to firmly fix both sides of the installation coupling plate (200), and the camera (22) is also firmly fixed.

[0107] Thus, the present invention supports the camera (22) at multiple points, such as the supplementary fastening part (321) of the upper / lower adjustment part (320), the fixed fastening part (344) of the fixed supplementary part (340), the upper fastening plate (335) and the lower fastening plate (333), and the left / right fastening plate (337), thereby allowing the camera (22) to be fixed without shaking. Furthermore, since engagement and disengagement are possible with simple movements, maintenance and replacement work are easy, and the alignment state can be maintained consistently even with external vibrations.

[0109] FIG. 12 is a diagram showing a state in which a heat transfer support member according to an embodiment of the present invention is mounted between a heat transfer plate and a heat radiating plate, FIG. 13 is a diagram schematically showing a heat transfer support member according to an embodiment of the present invention, and FIG. 14 is a diagram schematically showing a first heat transfer member and a second heat transfer member of a heat transfer support member according to an embodiment of the present invention.

[0110] The heat transfer support member (400) according to the present invention is positioned between the heat transfer plate (210) and the heat radiating plate (220) and can elastically press the heat transfer plate (210) in the direction of the camera (22) and can perform a cooling function for the camera (22).

[0111] The above heat transfer support member (400) comprises a base member (410), an elastic support member (420) disposed inside the base member (410) such that one side contacts the lower base (412) of the base member (410) and the other side contacts the upper base (411) of the base member (410) to elastically support the lower base (412) and the upper base (411), an elastic guide member (430) disposed spaced apart from the elastic support member (420) such that one side is fixed to the lower base (412) and the other side is fixed to the upper base (411), and the one side is inserted into the other side and elastically supported in the inserted state, and a first heat transfer member (440) disposed in the center of the base member (410) such that the upper side contacts the heat transfer plate (210) and the other side is exposed to the outside of the heat radiation plate (220) to transfer heat to the atmosphere, and the It includes a plurality of second heat transfer sections (450) spaced apart from the first heat transfer section (440), with the upper side in contact with the heat transfer plate (210) and the other side exposed to the outside of the heat radiation plate (220) to transfer heat to the atmosphere.

[0112] The base portion (410) is composed of a lower base (412) and an upper base (411), and an elastic support portion (420) and an elastic guide portion (430) are disposed in the internal space between the lower base (412) and the upper base (411).

[0113] The upper base (411) is located on the side in contact with the heat transfer plate (210), and the lower base (412) is located on the upper side of the heat radiating plate (220), and the gap between the lower base (412) and the upper base (411) is adjusted by the elastic force of the elastic support part (420) and the elastic guide part (430).

[0114] The above elastic support member (420) includes a first support base (421) fixed to the lower surface of the upper base (411), an elastic member (422) with its upper portion fixed to the first support base (421), and a second support base (423) fixed to the upper surface of the lower base (412) and connected to the lower portion of the elastic member (422).

[0115] The above elastic member (422) may be composed of a coil spring and is compressed and stretched between the first support base (421) and the second support base (423) to provide elastic force between the lower base (412) and the upper base (411). The elastic support member (420) serves to maintain a constant elastic force so that the heat transfer plate (210) can be pressed against the camera (22) with uniform pressure.

[0116] The elastic guide part (430) comprises a guide body (431) fixed to the lower surface of the upper base (411), a lifting guide (432) whose upper end is inserted into a body groove formed in the lower part of the guide body (431) and whose lower end is fixed to the upper surface of the lower base (412), and a guide elastic part (433) disposed inside the body groove to elastically support the upper part of the lifting guide (432).

[0117] The above elastic guide part (430) is spaced apart from the elastic support part (420) and serves to guide the lifting movement of the base part (410). The lifting guide (432) is inserted into the body groove of the guide body (431) and can slide in the up and down direction. It is elastically supported by the guide elastic part (433), enabling stable linear movement without shaking during the lifting movement of the base part (410).

[0118] Accordingly, the elastic guide part (430) provides a uniform elastic force to the heat transfer plate (210) together with the elastic support part (420), while accurately maintaining the lifting direction of the base part (410).

[0119] The first heat transfer section (440) may be formed with a larger contact area with the heat transfer plate (210) than each of the second heat transfer sections (450). The first heat transfer section (440) is positioned in the center of the base section (410) to intensively absorb heat generated in the center of the heat transfer plate (210), and a plurality of second heat transfer sections (450) are spaced apart from the first heat transfer section (440) to disperse and absorb heat generated in the periphery of the heat transfer plate (210). Through this, an even cooling effect can be achieved across the entire heat transfer plate (210).

[0120] The elastic support member (420) and the elastic guide member (430) can elastically press the heat transfer plate (210) in the direction of the camera (22). The elastic member (422) of the elastic support member (420) and the guide elastic member (433) of the elastic guide member (430) cooperate to press the base member (410) upward, thereby ensuring that the heat transfer plate (210) adheres uniformly and stably to the camera (22). In this process, the elastic guide member (430) guides the vertical movement of the base member (410) so that the heat transfer plate (210) can make surface contact with the camera (22) without eccentricity.

[0121] The first heat transfer member (440) penetrates the lower first hole (412a) formed in the lower base (412) and is coupled to the upper first hole (411a) formed in the upper base (411) to make surface contact with the heat transfer plate (210), and the plurality of second heat transfer members (450) penetrate each lower second hole (412b) formed in the lower base (412) and are coupled to each upper second hole (411b) formed in the upper base (411) to make surface contact with the heat transfer plate (210).

[0122] The first heat transfer section (440) may be formed in a solid cylindrical shape, and the second heat transfer section (450) may be formed in a solid plate shape. The first heat transfer section (440) and the second heat transfer section (450) may be formed from a metal material with high thermal conductivity, such as copper or aluminum, and exhibit efficient cooling performance by combining a conduction method through surface contact with the heat transfer plate (210) and a convection method outside the heat radiating plate (220).

[0123] A cylindrical first heat transfer section (440) concentrates the heat of the heat transfer plate (210) with a wide contact area at the center of the base section (410), and a plurality of plate-shaped second heat transfer sections (450) are spaced apart around the first heat transfer section (440) to disperse and absorb the heat of the heat transfer plate (210), thereby maximizing cooling efficiency.

[0124] Effective cooling action can be performed without a separate cooling means by means of the first heat transfer unit (440) and the second heat transfer unit (450) provided in the heat transfer support unit (400). Specifically, the upper side of the first heat transfer unit (440) and the second heat transfer unit (450) is in surface contact with the heat transfer plate (210), so that heat generated from the heat transfer plate (210) is conducted to the first heat transfer unit (440) and the second heat transfer unit (450), and the other side of the first heat transfer unit (440) and the second heat transfer unit (450) is exposed to the outside of the heat radiating plate (220) and comes into contact with the atmosphere, thereby releasing heat to the outside by convection.

[0125] At this time, the cylindrical first heat transfer section (440) intensively absorbs heat from the center of the heat transfer plate (210) at the center of the base section (410), and the plate-shaped multiple second heat transfer sections (450) are spaced apart around the first heat transfer section (440) to disperse and absorb heat from the periphery of the heat transfer plate (210), thereby achieving a uniform cooling effect over the entire heat transfer plate (210).

[0126] In this way, the present invention can prevent malfunction or damage to parts caused by overheating during the operation of the camera (22) by a cooling method that combines conduction and convection, and can improve the durability and operational stability of the device.

[0127] It will be obvious to those skilled in the art that the invention described above is not limited by the aforementioned embodiments and attached drawings, and that various substitutions, modifications, and changes can be made within the scope of the technical concept of the invention. Explanation of the symbols

[0129] 10 : Digital map storage unit 20 : Actual measurement point information collection unit 22 : Camera 30 : Image matching unit 40 : Digital map correction unit 100 : Terminal 200 : Installation coupling plate 210 : Heat transfer plate 220 : Heat radiator plate 230 : Radiation support 300 : Installation support unit 310 : Installation support case 320: Vertical adjustment part 321: Supplementary fastening part 330: Left / Right Fixing Part 331: Up / Down Operating Part 332 : Fixed support part 333 : Lower fastening plate 334 : Lower fastening part 335 : Upper fastening plate 336 : Upper fastening part 337 : Left and right fastening plates 338 : Left and right elastic members 340 : Fixed reinforcement member 341 : Fixed reinforcement case 342 : Fixed reinforcement elastic member 343 : Fixed reinforcement rod 344 : Fixed fastening part 345 : Temporary fixing part 400 : Heat transfer support part 410 : Base section 411 : Upper base 411a : Upper 1st hole 411b : Upper 2nd hole 412 : Lower base 412a : Lower first hole 412b : Lower second hole 420 : Elastic support 421 : First support base 422 : Elastic member 423 : Second support base 430 : Elastic guide part 431 : Guide body 432 : Lifting guide 433 : Guide elastic part 440 : First heat transfer part 450 : Second heat transfer unit

Claims

Claim 1 A digital map storage unit that stores road images and feature images in a layer format constituting a digital map image as data according to absolute coordinate values, which are digital coordinates; and a first collected information storage unit comprising a first captured image storage part that stores a first captured image collected by video recording at a shooting point while moving first along a designated path, wherein the first captured image has the first absolute coordinate value of the shooting point recorded and stored, and a first vector distance storage part that stores a first vector distance collected by measuring the aiming angle and distance value of a feature by irradiating a laser pulse signal radially from a measurement point during the first movement, wherein the first vector distance has the first absolute coordinate value of the measurement point recorded and stored. A secondary collected information storage unit comprising: a second captured image storage part that stores a second captured image collected by video recording at a shooting point while moving secondarily along the same path as the first movement path, wherein the second captured image has the second absolute coordinate value of the shooting point recorded and stored; and a second vector distance storage part that stores a second vector distance collected by measuring the aiming angle and distance value of a feature by irradiating a laser pulse signal radially from a measurement point during the second movement, wherein the second vector distance has the second absolute coordinate value of the measurement point recorded and stored; an information data storage unit that stores detailed information regarding the names of the target road and the feature, respectively, and text posted on the outer wall of the feature, and a representative image linked to the feature image based on the center coordinate value of the feature; a reference point information storage unit that stores the reference coordinate value and unique code of a location where a reference point node is installed on the ground; and a digital map storage unit equipped with these components; and an absolute coordinate measurement unit that measures the first and second absolute coordinate values ​​of a means of movement moving along a designated path. Multiple cameras arranged radially around a means of transportation to capture surrounding images and generate first and second captured images, and to verify the first and second absolute coordinate values ​​of the shooting point through an absolute coordinate measuring unit;A vector distance measuring unit that radiates a laser pulse signal to measure the aiming angle and distance values ​​of an object relative to a measurement point, collects first and second vector distances, and verifies the first and second absolute coordinate values ​​of the measurement point through an absolute coordinate measuring unit; a data classification unit that moves along a designated path, classifies the collected first and second absolute coordinate values, first and second captured images, and first and second vector distances into data collected during the first movement and data collected during the second movement, records the aiming angle of the camera in the first and second captured images, and stores them in the first collected information storage unit and the second collected information storage unit, respectively; a reference point signal detection unit that transmits a designated frequency signal for communication with a reference point node, receives a unique code included in the reply signal of the reference point node, and verifies the reference coordinate values ​​of the reference point node through a search in the reference point information storage unit; A coordinate error correction unit that compares the absolute position value of the actual point information collection unit, measured based on the reference coordinate values ​​of at least two reference point nodes, with the first and second absolute coordinate values ​​of the actual point information collection unit measured through an absolute coordinate measurement unit to check for errors, and corrects the first and second absolute coordinate values ​​according to the said error; an actual point information collection unit mounted on a means of transportation; and a shortest position verification unit that, based on the absolute coordinate information by location confirmed through the combination of the first and second vector distances and the first and second absolute coordinate values ​​collected by the actual point information collection unit, checks the center coordinate value of the center point of the feature from the centerline of the road and the centerline coordinate value of the point located at the shortest distance in a designated direction for each feature. A matching target search unit that checks the first and second absolute coordinate values ​​of the nearest shooting point from the center line coordinate values ​​and searches for the first and second captured images in which the corresponding first and second absolute coordinate values ​​are recorded in the first and second captured image storage parts of the first and second collection information storage units; an image search unit that selects the first and second captured images in which the target object is captured in a straight-line distance direction from the searched first and second captured images by checking the aiming angle and confirms them as matching targets for selecting the representative image of the object;An image matching unit equipped with an image selection unit that, in a digital map image where a road image and a feature image are merged and displayed on an input / output means, displays a first captured image and a second captured image that are matching targets for a feature image selected by an operator in a layer format, and executes to confirm the first captured image or the second captured image selected by the operator as a representative image; and a digital map editing unit that updates the digital map by linking the first captured image or the second captured image to the feature image of the corresponding feature based on the center coordinate values ​​recorded in the first captured image or the second captured image confirmed as the representative image; a representative image replacement unit that replaces the existing representative image linked to the feature image of the corresponding center coordinate value in the digital map image with the newly entered representative image when a representative image with the center coordinate values ​​of the feature is newly entered; and an error detection unit that analyzes the image of the confirmed representative image using CNN (Convolutional Neural Networks) technology to search for text posted on the corresponding feature image, and checks for errors by comparing it with the text of detailed information regarding the corresponding feature stored in an information data storage unit. A numeric map correction unit equipped with a warning unit that displays an error warning using a pop-up window when an error is detected by an error detection unit; wherein the actual measurement point information collection unit further includes an installation support unit mounted on the upper part of a moving means; an installation coupling plate coupled to the upper part of the installation support unit; a plurality of radiation supports coupled to the upper part of the installation coupling plate; a heat radiation plate coupled to the upper part of the radiation supports; a heat transfer support unit coupled to the upper part of the heat radiation plate; and a heat transfer plate coupled to the upper part of the heat transfer support unit, wherein a camera is coupled to the upper part thereof; and wherein the heat transfer support unit includes a base part that contacts the lower part of the heat transfer plate; and an elastic support part disposed inside the base part, one side of which contacts the lower base of the base part and the other side of which contacts the upper base of the base part to elastically support the lower base and the upper base.The elastic guide part is spaced apart from the elastic support part, with one side fixed to a lower base and the other side fixed to an upper base, and one side inserted into the other side and elastically supported in the inserted state; a first heat transfer part disposed in the center of the base part, with the upper side in contact with a heat transfer plate and the other side exposed to the outside of a heat radiation plate to transfer heat to the atmosphere; and a plurality of second heat transfer parts spaced apart from the first heat transfer part, with the upper side in contact with a heat transfer plate and the other side exposed to the outside of a heat radiation plate to transfer heat to the atmosphere; wherein the elastic support part includes a first support base fixed to the lower surface of the upper base; an elastic member with its upper end fixed to the first support base; and a second support base fixed to the upper surface of the lower base and to which the lower end of the elastic member is connected; and the elastic guide part includes a guide body fixed to the lower surface of the upper base; and a lifting guide with its upper end inserted into a body groove formed in the lower part of the guide body and its lower end fixed to the upper surface of the lower base. and a guide elastic member disposed inside the body groove and elastically supporting the upper part of the lifting guide; wherein the first heat transfer member is formed with a larger contact area with the heat transfer plate than each second heat transfer member, and the elastic support member and the elastic guide member elastically press the heat transfer plate in the direction of the camera, and the first heat transfer member penetrates a lower first hole formed in the lower base and is coupled to an upper first hole formed in the upper base to make surface contact with the heat transfer plate, and the plurality of second heat transfer members penetrate each lower second hole formed in the lower base and are coupled to each upper second hole formed in the upper base to make surface contact with the heat transfer plate, the first heat transfer member is formed in a cylindrical shape with a solid interior, and the second heat transfer member is formed in a plate shape with a solid interior, and the installation support unit comprises: an installation support case disposed at the bottom of the camera and having a hollow interior; and an up-and-down adjustment member coupled to the center of the inner lower surface of the installation support case and capable of moving up and down; A pair of left and right fixing parts coupled to both sides of the inner lower surface of the installation support case and arranged to face each other with an upper and lower adjustment part in between; and a pair of fixing reinforcement parts provided at the bottom of the installation coupling plate;A digital map production system capable of aligning actual measurement point information with GNSS coordinate-based digital images, characterized by comprising: a vertical operating part coupled to the inner lower surface of an installation support case so as to be movable vertically; a fixed support part spaced apart from the vertical operating part and fixedly coupled to the inner lower surface of the installation support case; a lower fastening plate coupled transversely to the upper end of the fixed support part and having a plurality of lower fastening teeth; and an upper fastening plate having one end rotatably coupled to the upper end of the vertical operating part, a central part rotatably coupled to the upper part of the lower fastening plate and having a plurality of upper fastening teeth.

Images