KR102162818B1 - Method for surveying underground utility being constructed using a camera in real time and apparatus for producing numerical drawings of underground utility based on the same - Google Patents

Abstract

Disclosed are a method and an apparatus for producing a numerical map of an underground facility on the basis of a survey of an underground facility being constructed by using an imaging device and a construction information management system using the same. The method for producing a numerical map of an underground facility on the basis of a survey of an underground facility being constructed by using an imaging device comprises the steps of: acquiring first information on a coordinate measuring point at which a camera is installed in the field, by a computing device connected to a field system through a network; acquiring second information on three or more marker points included in an image captured by the camera; receiving a construction survey image according to the construction of an imaging environment including the camera installation; detecting a pipeline from the construction survey image and extracting the image coordinates of the detected pipeline; converting the image coordinates into 3D coordinates; converting the three-dimensional coordinates to absolute coordinates by using the absolute coordinates of the coordinate measuring point and the marker points in the construction survey image; warping the pipeline image including the pipeline by using the absolute coordinates of the marker points, to correspond to a numerical map; and creating, as a continuous line, management information having the absolute coordinates on a projection plane in accordance with the numerical map or underground facility map creation rules. Accordingly, the work efficiency can be increased.

Description

A real-time underground facility construction survey method using an image device and a digital drawing production device for underground facilities based thereon {METHOD FOR SURVEYING UNDERGROUND UTILITY BEING CONSTRUCTED USING A CAMERA IN REAL TIME AND APPARATUS FOR PRODUCING NUMERICAL DRAWINGS OF UNDERGROUND UTILITY BASED ON THE SAME}

The present invention relates to a technology for producing a digital drawing of underground facilities, and more particularly, to a method for measuring construction of an underground facility using an image device and an apparatus for producing a digital drawing of an underground facility based thereon.

In general, underground facilities such as water supply, sewerage, gas pipes, communication pipes, etc. cannot be checked with the naked eye after being buried once. Therefore, accidents often occur in which underground facilities are damaged during civil works such as excavation work.

In order to prevent such a problem, in the case of installing or repairing underground facilities, the exact location of the underground facilities is measured and recorded and managed as a digital drawing. Therefore, surveying technicians and equipment are input to the construction site of all underground facilities in real time to accurately measure and record the buried location of underground facilities 50 such as water supply and drainage pipes buried underground (see FIG. 1).

However, it is very inefficient in terms of operation and cost of manpower and equipment to input survey technicians and equipment for surveying underground facilities at a civil construction site. That is, most of the underground facilities civil works sites are not located adjacent to each other, and the time for surveying the location of the underground facilities at a single site is remarkable compared to the civil work time for the underground facilities burial consisting of excavation, conduit installation, backfilling, and arrangement work. Because it is very short.

In addition, when underground facilities are buried to a depth of several meters at a civil engineering construction site, a survey engineer must enter the work site in the ground where the underground facilities are located, so life-threatening accidents due to soil collapse during construction, life-threatening accidents due to heavy equipment, and There is a problem that safety accidents such as a fall accident occur.

As such, there is a need for a way to solve the problem of inefficient manpower and equipment operation and safety accidents that occur in the process of producing digital drawings of underground facilities.

Registered Patent 10-1852368 (2018.04.27) Registered Patent 10-1944442 (2019.01.31)

The present invention was derived to solve the problems of the prior art, and an object of the present invention is to provide a method of measuring the construction of an underground facility in real time using an image device such as a stereo camera.

Another object of the present invention is to use a construction survey image photographing the construction state of underground facilities with a stereo camera to read pipelines for underground facilities and to perform three-dimensional coordinates, and to automatically produce digital drawings for underground facilities. It is to provide equipment for producing digital drawings of facilities.

Another object of the present invention is to provide a digital drawing apparatus for underground facilities capable of monitoring construction survey images of underground facilities in real time or providing construction information stored in a storage device to a user terminal according to image information or pipeline information inquiry. There is.

An underground facility construction survey method according to an aspect of the present invention for solving the above technical problem is a real-time underground facility construction survey method using an image device, wherein the stereo camera is performed by a computing device of a field system connected to a stereo camera. Generating a construction measurement image having first information about the installed coordinate station and second information about three or more marking points around the coordinate station; Assigning a first identifier for the coordinate measurement point in relation to the construction measurement image; Assigning second identifiers to the marking points in relation to the construction measurement image; And storing the first identifier, the second identifiers, a first image coordinate of the first identifier, and second image coordinates of the second identifier. The periphery of the coordinate station and the marking points are included in one image of the stereo camera. The first identifier, the first image coordinate, the second identifiers, and the second image coordinates may be transmitted to an apparatus for producing a digital drawing of an underground facility based on the construction measurement image.

In one embodiment, the apparatus for producing a digital drawing of an underground facility receiving the construction measurement image detects a pipe from the construction survey image, extracts the image coordinates of the detected pipe, converts the image coordinates to 3D coordinates, and the Converts the 3D coordinates into absolute coordinates using the coordinate station and the absolute coordinates of the marker points in the construction survey image, and warps the pipeline image including the pipeline using the absolute coordinates of the marker points in response to a digital map (warping), and the management information with the above absolute coordinates can be created as a continuous line on the projection plane in accordance with the digital map or underground facility drawing rules.

In one embodiment, the method of surveying the construction of underground facilities may further include the step of relaying the construction survey image to enable real-time monitoring at a remote location.

An apparatus for producing a digital drawing of underground facilities according to another aspect of the present invention for solving the above technical problem is an apparatus for producing a digital drawing of underground facilities based on construction surveying of underground facilities using an image device, which detects and detects a pipeline in a construction survey image. A pipeline reading unit for extracting the image coordinates of the pipeline; Converting the image coordinates into 3D coordinates based on the first information on the coordinate station where the camera is installed at the underground facility construction site and the second information on the three or more marker points included in one image of the camera, A 3D coordinate processing unit converting the 3D coordinates into absolute coordinates by using the absolute coordinates of the coordinate station and the mark points in the construction survey image; An image conversion unit for warping the pipe image including the pipe passage in response to a digital map using the absolute coordinates of the mark points; And a digital drawing production unit for preparing the management information having the absolute coordinates as a continuous line on the projection plane according to the digital map or underground facility drawing rule.

An apparatus for producing digital drawings of underground facilities according to another aspect of the present invention for solving the above technical problem is an apparatus for producing digital drawings of underground facilities including a computing device connected to a field system through a network, and detects a pipeline in a construction survey image. A pipeline reading unit for extracting the image coordinates of the detected pipeline; Converting the image coordinates into 3D coordinates based on the first information on the coordinate station where the camera is installed at the underground facility construction site and the second information on three or more marker points included in one image of the camera, And a three-dimensional coordinate processing unit for converting the three-dimensional coordinates into absolute coordinates by using the absolute coordinates of the coordinate measurement points and the mark points in the construction survey image; An image conversion unit for warping the pipe image including the pipe passage in response to a digital map using the absolute coordinates of the mark points; A digital drawing production unit for preparing the management information having the absolute coordinates as a continuous line on the projection plane in accordance with the digital map or underground facility drawing rule; And through the construction survey image obtained from the site system, real-time monitoring of the civil works site for the reclamation of underground facilities, receiving an information request message for construction information or pipeline information from a user terminal connected through a network, and the information request message And a user interface for providing the construction information or pipeline information to the user terminal in response.

A method for producing a digital drawing for underground facilities according to another aspect of the present invention for solving the above technical problem is a method for producing a digital drawing for underground facilities based on construction surveying of underground facilities using an image device, and is a computing connected to the field system through a network. Obtaining, by the device, first information on a coordinate station at which the camera is installed in the field; Acquiring second information on three or more marker points included in one image of the camera; Receiving a construction survey image according to construction of a photographing environment including the installation of the camera; Detecting a pipeline from the construction survey image and extracting image coordinates of the detected pipeline; Converting the image coordinates into 3D coordinates; Converting the 3D coordinates into absolute coordinates using the absolute coordinates of the coordinate station and the mark points in the construction survey image; Warping the pipeline image including the pipeline in response to a digital map using the absolute coordinates of the mark points; And creating the management information having the absolute coordinates as a continuous line on the projection plane in accordance with a digital map or an underground facility drawing rule.

In one embodiment, the method for producing a digital drawing of an underground facility includes the steps of determining whether a relay mode for the construction survey image is activated, and if the relay mode is activated in the determining step, the underground facility through the construction survey image It may further include the step of monitoring the facility civil works site.

In one embodiment, a method for producing a digital drawing of an underground facility includes receiving an information request message for construction information or pipeline information through a user interface of the computing device, and construction information stored in a storage device in response to the information request message or It may further include the step of providing the pipeline information to the requester.

An apparatus for producing a digital drawing of underground facilities according to another aspect of the present invention for solving the above technical problem is an apparatus for producing a digital drawing of underground facilities based on construction surveying of underground facilities using an image device. A pipeline reading unit that detects a pipeline from the construction survey image acquired according to the construction of a photographing environment including camera installation and extracts the image coordinates of the detected pipeline; Converting the image coordinates into 3D coordinates based on the first information on the coordinate station where the camera is installed in the field and the second information on 3 or more marker points included in one image of the camera, and the construction survey A 3D coordinate processing unit that converts the 3D coordinates into absolute coordinates using the absolute coordinates of the coordinate station and the mark points in the image; An image conversion unit for warping the pipe image including the pipe passage in response to a digital map using the absolute coordinates of the mark points; And a digital drawing production unit for preparing the management information having the absolute coordinates as a continuous line on the projection plane according to the digital map or underground facility drawing rule.

An apparatus for producing a digital drawing for underground facilities according to another aspect of the present invention for solving the above technical problem is an apparatus for producing a digital drawing for underground facilities including a construction information management system having a computing device connected to a field system through a network, A monitoring unit for monitoring a civil engineering site for reclamation of an underground facility through the construction survey image received from the site system; A user interface for receiving an information request message for construction information or pipeline information from a user terminal connected through a network; A construction information management unit connected to a storage device for storing the construction information to manage the construction information; A pipeline information management unit connected to a storage device that stores the pipeline information to manage the pipeline information; And an information providing unit providing the construction information or pipeline information to the user terminal in response to the information request message.

In one embodiment, the apparatus for producing a digital drawing of an underground facility detects a pipeline from a construction survey image acquired according to the construction of a photographing environment including a camera installation at a civil construction site for reclamation of an underground facility, and extracts the image coordinates of the detected pipeline. Pipeline reading unit; Converting the image coordinates into 3D coordinates based on the first information on the coordinate station where the camera is installed in the field and the second information on 3 or more marker points included in one image of the camera, and the construction survey A 3D coordinate processing unit that converts the 3D coordinates into absolute coordinates using the absolute coordinates of the coordinate station and the mark points in the image; An image conversion unit for warping the pipe image including the pipe passage in response to a digital map using the absolute coordinates of the mark points; And it may further include a digital drawing production unit for creating the management information having the absolute coordinates as a continuous line on the projection plane in accordance with the digital map or underground facility drawing rules.

In the case of employing the above-described method for measuring construction of underground facilities using the imaging device of the present invention and the apparatus for producing digital drawings of underground facilities based thereon, the work efficiency of the survey engineer at the civil construction site where the underground facilities are buried is simplified to increase work efficiency. In addition to allowing simple workers to perform surveying work in parallel, it is possible to prevent the risk of safety accidents in advance as there is no need to work directly on underground facilities.

In addition, by using the construction survey image taken of the construction status of the underground facility through a stereo camera, the pipeline reading, 3D coordinates, image conversion and digital drawing production of the underground facility are automatically and through image processing and digital signal processing. There is an advantage that can be performed effectively.

In addition, by using a digital drawing production device for underground facilities including or integrally equipped with a construction information management system, the construction survey image is monitored in real time from a remote location, the image information including the construction survey image is managed, or it is produced based on the construction survey image. By managing construction information or pipeline information of digital drawings stored in the storage device, related information can be effectively provided to the user terminal according to the image information inquiry of the user terminal for a specific underground facility or the pipeline information inquiry.

1 is a view for explaining a construction survey process for producing a numerical drawing according to the prior art.
2 is a schematic diagram of an overall system configuration for explaining an apparatus for producing a digital drawing of an underground facility according to an embodiment of the present invention.
3 is a flowchart illustrating a construction survey process of an underground facility by the on-site system of FIG. 2.
4 is a flowchart illustrating another underground facility construction survey process by the on-site system of FIG. 2.
5 is a schematic diagram of the configuration of the apparatus for producing a digital drawing of underground facilities of FIG. 2.
6A and 6B are exemplary views for explaining a 3D coordinate process of the apparatus for producing a digital drawing of an underground facility of FIG. 5.
7 is a block diagram of an apparatus for producing a digital drawing of an underground facility according to another embodiment of the present invention.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in the present specification are merely illustrative for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention are It may be implemented in various forms and is not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can apply various changes and have various forms, embodiments are illustrated in the drawings and will be described in detail in the present specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms used in the present specification are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described herein, but one or more other features. It is to be understood that the possibility of addition or presence of elements or numbers, steps, actions, components, parts, or combinations thereof is not preliminarily excluded.

Before describing the embodiments of the present invention, some terms used in the present specification are defined as follows.

"Underground facilities" refers to roads and road subsidiary facilities and facilities in each of the following categories:

end. Roads and auxiliary facilities pursuant to Article 2 of the Road Act

I. Water supply pipes and auxiliary facilities pursuant to Article 3 of the Waterworks Act

All. Sewer pipes and auxiliary facilities under Article 2 of the Sewerage Act

la. Gas pipelines and auxiliary facilities under Article 2 of the City Gas Business Act

hemp. Communication pipelines and auxiliary facilities under Article 2 of the Framework Act on Telecommunications

bar. Electric power pipelines and auxiliary facilities under Article 2 of the Electricity Business Act

four. Oil pipelines and auxiliary facilities pursuant to Article 2 of the Oil Pipeline Safety Management Act

Ah. Heating heat pipes and auxiliary facilities under Article 2 of the Collective Energy Business Act

character. Underground facilities with public interest, such as underground facilities related to other signals and streetlights, underground facilities related to subways and ITS, cable TV and wired lines installed underground, common wards, underground passages and underground shopping center facilities.

In other words, underground facilities refer to waterworks facilities, sewage facilities, gas facilities, communication facilities, electric facilities, oil pipeline facilities, heating heat pipe facilities, and other facilities designated by the Director of the National Geographic Information Institute.

"Measurement of underground facilities" refers to surveying and exploring facilities, surveying the location (including measuring the location of facilities in a state that can be checked with the naked eye), expressing them in drawings and figures, and constructing a database.

"Underground facility map" refers to a drawing marked with a certain symbol and scale based on a basic map of underground facilities.

"Exploration" refers to measuring the location and depth of facilities buried underground (hereinafter referred to as'depth') with a probe.

"Reading" refers to identifying or recognizing underground facilities through image processing and digital processing of image data such as construction survey images, and detecting their shape or dimension.

The term "basic map of underground facilities" (hereinafter referred to as "basic map") refers to a digital map of scale 1/1,000, 1/2,500, or an already produced underground facility map, which is the basis for preparing an underground facility map. However, in areas where there is no digital map of scale 1/1,000 and 1/2,500, it refers to the largest scale digital map among the digital maps published by the Director of the National Geographic Information Institute.

"Exact location editing" refers to the work of editing the survey result of a facility using standard codes, etc., or modifying and supplementing the map of an underground facility that has already been produced using the result of a field survey on the facility.

"Structured editing" refers to the work of constructing a geo-edited underground facility map in a geometric and logical form in order to understand the interrelationships between data.

The term "drawing production and editing" refers to the work of editing the correct location-edited results according to the "Map Schematic Rules" and standard diagrams for output in map format drawings.

And "reading" refers to classifying the location and shape of underground facilities within the image based on the selection information included in the construction survey image.

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

2 is a schematic diagram of an overall system configuration for explaining an apparatus for producing a digital drawing of an underground facility according to an embodiment of the present invention.

Referring to FIG. 2, the apparatus 500 for producing a digital drawing of an underground facility according to the present embodiment automatically produces a digital drawing of an underground facility based on image data such as a construction survey image recorded with the construction information of the underground facility. As a means or a component that performs a function corresponding thereto, it may have a form including a digital drawing production device 200 and a construction information management system 400 for consultation, and online or offline through a network. It can be connected to the field system (100).

In addition, the apparatus for producing digital drawings of underground facilities may further include a storage device 300, in which case the apparatus for producing digital drawings of underground facilities may be referred to as an integrated platform 700.

The underground facility digital drawing production apparatus 500 is connected to the field system 100 through a network and transmits and receives signals and data to and from the field system 100. The signals and data may include an identifier of a coordinate measurement point, an identifier of a mark point, coordinates of a coordinate measurement point, coordinates of a mark point, and a construction survey image to be described later.

For the transmission and reception of signals and data, the construction survey image recorded by the on-site system 100 is stored in a storage device provided in the on-site system 100 or in a storage device on the network, and then the digital drawing production device 500 for underground facilities is used as a construction survey image. This includes accessing the stored storage device and reading the desired construction survey image.

In addition, the construction survey image may be monitored in real time by the construction information management system 400 according to the relay from the field system 100. The monitored construction survey image may be serviced to be output on a screen of a user terminal accessing the construction information management system 400.

The field system 100 may include a survey equipment 110, an imaging device 120, and a communication device 130. Further, the field system 100 may include a computing device including a processor and a memory.

To describe the components of the field system 100 in more detail, the surveying equipment 110 includes at least one selected from a total station, a global positioning system (GPS) receiver, and a global navigation satellite system (GNSS) receiver. It may include, and may be used to measure the position of a coordinate station, a marker point, and the like.

In addition, the surveying equipment 110 may include an azimuth sensor and a gyro sensor for measuring the posture, position, and installation state of the stereo camera, and in this case, the location of the underground facility (absolute coordinates) through the selection information in the construction survey image. Since can be grasped, physical location surveying by a light wave machine, GPS receiver, or GNSS receiver can be omitted or minimized.

The imaging device 120 includes a camera, where the camera includes a stereo camera. In this case, an azimuth sensor and a gyro sensor are integrally mounted on the stereo camera, and may be connected to the communication device 130. Information about the position, posture, and state of the stereo camera may be stored together in the construction survey image or may be provided to the apparatus 500 for producing a digital drawing of an underground facility through the communication device 130.

The communication device 130 includes a means for transmitting and receiving signals and data by being connected to the apparatus 500 for producing a digital drawing of an underground facility through a network, or a component for performing a function corresponding to such a means. The communication device 130 may be integrally mounted in the housing of at least one of the surveying equipment 110 and the imaging device 120.

The apparatus 200, the storage device 300, and the construction information management system 400 of consultation for underground facilities will be described in detail below.

However, the above-described storage device 300 is a means for storing a digital drawing produced based on a construction survey image or a component that performs a function corresponding to such a means, and the apparatus 200 for producing a digital drawing of underground facilities and construction It may be implemented to be included in at least one of the information management system 400.

In addition, the apparatus 500 for producing a digital drawing of an underground facility may be implemented such that the construction information management system 400 is integrally provided in a single housing, and vice versa. In addition, the integrated platform 700 may have a form in which the apparatus 200 for producing digital drawings of underground facilities and the storage device 300 and the construction information management system 400 are mounted in a single housing or a single cabinet.

According to this embodiment, the underground facility digital drawing production apparatus 500 acquires a construction survey image of an underground facility using an image device from the field system 100, and produces a digital drawing of the underground facility based on the construction survey image, and the like, The construction survey site can be monitored in real time through the construction survey image, or pipeline information or video information can be provided according to external requests.

3 is a flow chart for explaining a method for surveying the construction of underground facilities by the on-site system of FIG. 2. And Figure 4 is a flow chart for explaining another underground facility construction survey process by the field system of Figure 2.

Referring to FIG. 3, in the method of surveying the construction of underground facilities according to the present embodiment, first, an equipment installation location is designated and coordinate points (CP) are selected (S31). The installation location of the equipment is preferably a point where the construction section of the underground facility to be buried is clearly visible. The equipment includes a camera, and the camera includes a stereo camera.

The coordinate measuring point may be marked in a predetermined shape or shape so that the corresponding point can be well identified in the image being photographed. The coordinates of the coordinate measuring point may be calculated as machine coordinates based on information about the azimuth sensor and the gyro sensor attached to the camera, that is, information related to the position and posture of the camera.

In addition, the earth coordinates or machine coordinates of the coordinate measuring point may be surveyed using surveying equipment such as a GPS receiver and a GNSS (Global Navigation Satellite System) receiver in another embodiment, but in this embodiment, construction surveying by a stereo camera By using images, it is possible to omit location surveying by survey equipment.

Next, three or more points are selected as threshold points (TP) included in one image of the camera (S32). When using a GNSS receiver, azimuth sensor, and gyro sensor, the marker points can be acquired directly in machine coordinates.

The identifier (ID) for the coordinate station or mark point and the earth coordinate or machine coordinate may be provided as selection information to the apparatus for producing a digital drawing of an underground facility through a network (see S31 and S32).

Next, an imaging device such as a camera is installed at the equipment installation location, and a photographing environment is established so that the previously installed mark points can be viewed on one screen (S33). The completion signal for the construction of the shooting environment is received by the computing device of the field system, and shooting of the camera may be started in response to the received completion signal.

Next, the on-site system can capture the construction process in real time through the imaging device (S34), and store the captured image in its own storage device or a storage device on the network (S35). The storage device storing the construction survey image may be set to access the underground facility digital drawing production device, but is not limited thereto.

In addition, the construction survey image photographed in real time may be relayed or transmitted in real time to an underground facility digital drawing production apparatus on a network or its construction information management system by a field system. To this end, the on-site system may determine whether the relay mode is active (S37), and provide an image, that is, a construction survey image on the network in real time according to the determination result, and relay it to a remote location (S38).

In this embodiment, the construction survey image generated by the stereo camera may be subjected to a digital image processing process. Image processing may include generating calibration data, performing image alignment based on the calibration data, and normalizing the image aligned image.

On the other hand, looking at the construction survey method by the above-described field system from another aspect, first, the control unit or processor of the field system may generate a construction survey image through a stereo camera that photographs the construction site of an underground facility (S41). The construction survey image may include first information about a coordinate station and second information about a mark point.

Next, the control unit assigns an identifier for the coordinate side (S42), and assigns an identifier for the marker points (S43).

Next, the construction information and the identifier are stored (S44). The stored construction information and identifier may be provided to the underground facility digital drawing production apparatus through the network.

Then, the control unit determines whether the current operating mode is a relay mode (S45), and if the relay mode, may relay the construction measurement image to a specific counterpart on the network (S46). Of course, when not in a relay mode or in a preset operating environment, the construction measurement image previously stored in a specific storage device may be shared with a user terminal, an administrator terminal, or a counterpart terminal to which access is allowed (S47).

5 is a schematic diagram of the configuration of the apparatus for producing a digital drawing of underground facilities of FIG. 2.

Referring to FIG. 5, the apparatus 200 for producing a digital drawing of an underground facility according to the present embodiment includes a pipeline reading unit 210, a 3D coordinate processing unit 220, a digital drawing production unit 230, and an image conversion unit 240. And, through this configuration, a digital drawing is produced based on the construction survey image and selection information (coordinate station identifier, coordinate station coordinates, marker point identifiers, marker point coordinates) acquired from the imaging device.

In describing each component, the pipeline reading unit 210 detects a pipeline from a construction survey image using an artificial intelligent (AI) algorithm as a kind of a pipeline reading system, and extracts the image coordinates of the pipeline. Related information according to detection or extraction may be stored in a storage device.

The 3D coordinate processing unit 220 is a type of 3D coordinate system, which converts the plane coordinates of the construction survey image, that is, the image coordinates (coordinates on the image coordinate system) into 3D coordinates (coordinates on the machine coordinate system) using stereo image technology. And, using the absolute coordinates of the previously surveyed points (CP, TP, etc.), the machine coordinate system is converted into an absolute coordinate system. Related information according to the conversion may be stored in a storage device.

As a kind of image conversion system, the image conversion unit 230 warps the pipeline image detected by the pipeline reading unit 210 by using the absolute coordinates of the predetermined points TP measured in advance in response to a digital map. warping). In addition, the image conversion unit 230 may edit the warped digital map according to the map standard of the digital map. The warped or edited numerical map can be stored in the storage device.

As described above, in the present embodiment, the construction measurement image can be processed through a 3D coordinate process and a warping process to produce a digital drawing for an underground facility.

The digital drawing production unit 240 is a kind of digital drawing production system, and the pipeline information converted to absolute coordinates by the three-dimensional coordinate processing unit 220 is continuously connected to the projection plane according to the preset digital map and underground facility drawing rules. It is automatically created as a line. The created underground facility and attribute information can be entered, edited, or saved by the user through the user interface.

The digital drawing production unit 240 may produce an underground facility map using a standard code including a map code, a terrain code, an underground facility layer code, and an attribute code. Mapping codes and topographic codes may comply with the standards set by the Digital Mapping Work Rules, and underground facilities layer codes and attribute codes may comply with the standards set by the National Geographic Institute. For example, the digital drawing production unit 240 may classify each type of underground facility using a preset basic color. Water supply facilities can be labeled in blue, sewer facilities in purple, gas facilities in yellow, communication facilities in green, electric facilities in red, oil pipeline facilities in brown, and heating and heat pipe facilities in orange.

In addition, the numerical drawing production unit 240 may perform position editing in units of maps using standard codes and symbols (symbols) through the position editing process, and may separately store a file for which the position editing is completed.

In addition, the digital drawing production unit 240 edits the necessary objects for the location-edited underground facilities in a geometric form of points, lines, planes, or combinations thereof, and performs a structured editing process in which descriptions or attributes are added. can do. Attributes may include necessary matters required by related laws, and attributes or attribute data may be stored in association with graphic data.

The above-described apparatus 200 for producing a digital drawing of underground facilities may include a memory storing a program and a processor connected to the memory to perform a program. The program may include software or a software module for performing a series of processes of producing a digital drawing of an underground facility based on the input CP and TP identifiers, coordinates, and construction survey images.

The software module is a means for performing a function of the pipeline reading unit 210, a function module corresponding thereto (a first module), a means for performing a function of the 3D coordinate processing unit 220, or a function module corresponding thereto ( A second module), a means for performing a function of the digital drawing production unit 230 or a function module corresponding thereto (a third module), and a means for performing a function of the image conversion unit 240 or a function module corresponding thereto (4th module) may be included.

The above-described processor may be provided with a microprocessor, a microcontrol unit, a custom semiconductor, a program logic controller and a sequential logic circuit (hardware method), or may be replaced by at least one of them. In addition, the memory may include a ROM, a RAM, a hard disk, and other recording media.

6A and 6B are exemplary views for explaining a main operation process of an image conversion unit of the apparatus for producing a digital drawing of an underground facility of FIG. 5.

6A and 6B, the image conversion unit according to the present embodiment maps the absolute coordinates of the mark points TP1 to TP4 included in the numerical survey image 241 photographed with the pipe 50 of FIG. 6A. It is possible to warp the numerical survey image 241, that is, the conduit image, by moving each of the corresponding absolute points (AP) to the corresponding absolute points (AP).

In other words, as shown in FIG. 6B, the image conversion unit uses the first mark point TP1 as the first absolute point AP1, the second mark point TP2 as the second absolute point AP2 in the warping process, The numerical survey image can be warped by dragging and moving the third mark point TP3 to the third absolute point AP3 and the fourth mark point TP4 to the fourth absolute point AP4.

7 is a schematic diagram of a configuration of a construction information management system according to another embodiment of the present invention.

Referring to FIG. 7, the construction information management system 500 according to the present embodiment includes the aforementioned pipe reading unit 210, a three-dimensional coordinate processing unit 220, an image conversion unit 230, and a digital drawing production unit 240. In addition, a real-time monitoring control unit 410, a user interface (UI) control unit 420, an image information management unit 430, a pipeline information management unit 440, and an information providing unit 450 may be provided.

The monitoring control unit 410 may provide a construction survey image connected to the site system through a network and relayed in real time from the site system on the screen of the monitoring device.

User interface (hereinafter referred to as'U/I' for short) The control unit 420 receives an inquiry message such as video information inquiry and pipeline information inquiry of the user terminal, and an internal request message or an internal control signal corresponding to the received inquiry message. May be transmitted to the image information management unit 430, the pipeline information management unit 440, and the like.

The U/I control unit 420 may include a user interface 422 that can be accessed by a user terminal through a wired or wireless network. The user interface 422 may include at least one screen or screen area for monitoring, image information inquiry, pipeline image inquiry, information output, and the like. In this user interface, the user can search information on buried pipelines or view image information on construction. That is, the UI controller 420 may provide a construction image, a three-dimensional map of an underground facility, a numerical map of a pipe, a normalized pipe image, and the like as information that can be viewed.

The image information management unit 430 may extract the corresponding image information from the storage device based on an internal request message input from the U/I controller 420 or the image information included in an internal control signal.

The pipeline information management unit 440 may extract the corresponding pipeline information from the storage device based on the pipeline information included in the internal request message or the internal control signal input from the U/I controller 420 or the like.

The information providing unit 450 may provide information or data provided by the image information management unit 430 or the pipeline information management unit 440 to the user terminal. The information providing unit 450 may receive a unique identifier of a user terminal through the U/I control unit 420, a visitor location register (VLR) or a home location register (HLR) on a network. The unique identifier may include a mobile phone number, an Internet protocol (IP) address, a media access control (MAC) address, and the like.

In addition, the information providing unit 450 may provide a map, a drawing, or an image searched through a user interface for the entire preset area or for a specific point. Such a map, drawing, or image may have a file format such as a CAD file (dwg, dxf), a shape file (.shp), or a pdf file.

The above-described monitoring control unit 410, U/I control unit 420, image information management unit 430, pipeline information management unit 440, and information providing unit 450 may correspond to a construction information management system. And the construction information management system may include a user interface.

According to the above-described embodiment, it is possible to obtain a construction survey image for an underground facility using a stereo camera, and effectively produce a numerical drawing for the corresponding underground facility through 3D image modeling of the construction survey image. It is possible to eliminate the risk of having to perform construction surveys of underground facilities by a surveyor climbing directly on the buried underground facilities at the construction site.

That is, in the prior art, there was a risk of human and material inefficiency and safety accidents while performing the processes of underground facility exploration and survey by survey workers and the creation of the original map of underground facilities, but according to this embodiment, construction survey obtained through the image device Based on the video, digital drawings of underground facilities can be produced through only the computational editing process.

In addition, according to the present embodiment, the coordinate system of the stereo image is converted into a three-dimensional absolute coordinate system by using a simple method of adding a coordinate measuring point and a mark point using a surveying equipment such as a GNSS receiver in addition to the construction survey image by an image device. Based on this, it is possible to effectively produce digital drawings of underground facilities, thereby obtaining location information, pipeline information, and construction information about underground facilities such as water supply pipes, sewer pipes, communication pipes, water supply and drainage pipes that are buried underground. And manage. In addition, it goes without saying that the absolute coordinates of the coordinate station and the mark point in the image can be obtained immediately by using information on the state, posture, and position of the stereo camera.

Although the present invention has been described centering on the embodiments with reference to the drawings, this is only exemplary, and it is obvious that various modifications and other equivalent embodiments are possible from those of ordinary skill in the art. Accordingly, the true technical scope of the present invention should be determined by the technical spirit of the appended claims.

Claims (5)

By using a construction survey image photographing the construction status of underground facilities with a stereo camera, it is possible to read the pipeline and make 3D coordinates for the underground facilities and automatically produce the digital drawings for the underground facilities. , As a real-time underground facility construction survey method,
By a computing device of the field system connected to the stereo camera,
Generating a construction measurement image having first information about a coordinate station where the stereo camera is installed and second information about three or more marker points around the coordinate station;
Assigning a first identifier for the coordinate measurement point in relation to the construction measurement image;
Assigning second identifiers to the marking points in relation to the construction measurement image; And
Storing the first identifier, the second identifiers, a first image coordinate of the first identifier and second image coordinates of the second identifiers; Including,
The coordinate measuring point and the marking points are included in one image of the stereo camera,
The first identifier, the first image coordinate, the second identifiers, and the second image coordinates are transmitted to a device for producing a digital drawing of an underground facility based on the construction measurement image,
The apparatus for producing a digital drawing of an underground facility receiving the construction measurement image detects a pipe from the construction survey image using an artificial intelligence algorithm and extracts the image coordinates of the detected pipe, based on the first information and the second information. Converts the image coordinates to 3D coordinates, converts the 3D coordinates into absolute coordinates using the absolute coordinates of the coordinate station and the marker points in the construction survey image, and uses the absolute coordinates of the marker points to the pipeline Performs a warping process of moving the pipeline image including the to points of the corresponding absolute coordinates of the digital map, and the management information converted from the 3D coordinates to the absolute coordinates and processed through the warping process is preset Construction survey method for underground facilities in which a digital map or underground facilities is created with a continuous line on the projection plane in accordance with the creation rules delete The method according to claim 1,
An underground facility construction survey method further comprising the step of relaying the construction survey image to be monitored in real time at a remote location. Underground facility construction survey-based underground facility construction survey, which performs pipeline reading and 3D coordinates for underground facilities, and automatically produces digital drawings for underground facilities using a construction survey image photographing the construction status of underground facilities with a stereo camera. As a facility digital drawing production device,
A pipeline reading unit that detects a pipeline from a construction survey image using an artificial intelligence algorithm and extracts image coordinates of the detected pipeline;
Converting the image coordinates into 3D coordinates based on the first information on the coordinate station where the stereo camera is installed at the underground facility construction site and the second information on three or more marker points included in one image of the camera And a three-dimensional coordinate processing unit for converting the three-dimensional coordinates into absolute coordinates by using the absolute coordinates of the coordinate measurement points and the mark points in the construction survey image;
An image conversion unit performing a warping process of moving the pipe image including the pipe to the corresponding absolute coordinate points of the digital map by using the absolute coordinates of the mark points; And
A digital drawing production unit that converts the management information into absolute coordinates by the three-dimensional coordinate processing unit and creates the management information processed through the warping process as a continuous line on the projection plane in accordance with a preset digital map or underground facility drawing rule;
Including,
The digital drawing production unit produces maps of underground facilities using standard codes including map codes, terrain codes, underground facilities layer codes and attribute codes, and edits the location in units of maps using standard codes and symbols through the correct location editing process. And save the file that has been edited in position, edit the required object for the location-edited underground facility in a geometric form of points, lines, planes, or combinations thereof, and add a description or attribute of the edited object Performing the structured editing process,
The first information includes a first identifier corresponding to the coordinate station and a first image coordinate of the first identifier, and the second information includes second identifiers for the marker points and a second identifier of the second identifiers. 2 An apparatus for producing a digital drawing of an underground facility including image coordinates, wherein the coordinate station and the mark points are included in one image of the stereo camera. The method of claim 4,
Real-time monitoring information of a civil engineering site for landfilling an underground facility obtained from a field system connected to the stereo camera in response to receiving an information request message for construction information or pipeline information from a user terminal connected through a network, and in response to the information request message , An apparatus for producing a digital drawing of an underground facility further comprising a user interface for providing a construction survey image, the construction information, or the pipeline information to the user terminal.

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