KR101223187B1 - A synthetic imagery generation system for geographic feature - Google Patents

Abstract

PURPOSE: An image painting synthesis system is provided to acquire image painting data which adds detailed numerical data to the image for a geographic feature by composing an elevation model created by an LIDAR(Light Detection And Ranging) device on a three dimensional aviator capturing image created by a digital capturing module. CONSTITUTION: An LIDAR(Light Detection And Ranging) device(300) creates an elevation model. A digital capturing module(500) creates a three-dimensional aviation capturing image data by using cameras. A painting module(700) creates painting image data by composing the elevator model on the three-dimensional aviator capturing image and by correcting the elevator model and the three-dimensional aviator capturing image. A numeric data synthesis module(800) applies a GPS(Global Positioning System) coordinate value to the painting image data. [Reference numerals] (100) GPS alarm device; (200) GPS storage module; (300) LIDAR device; (400) Elevation model storage module; (500) Digital capturing module; (600) Image storage module; (700) Painting module; (800) Numeric data synthesis module

Description

A synthetic imagery generation system for geographic feature

The present invention relates to an image drawing synthesis system for drawing a video image of a feature. More specifically, a digital photographing module comprising an elevation model generated by a Lidar device and a plurality of individual cameras for capturing images of different angle sections. The synthesized three-dimensional aerial photographing image is synthesized, but the feature is added to the numerical information based on the GPS information transmitted by the GPS notification device, respectively installed at the two or more selected photographing reference points in the area where the aerial photographing proceeds. Disclosed is an image drawing synthesis system for drawing a video image for.

LIDAR (Light Detection And Ranging) is generally composed of a transmission optical system for irradiating a light source such as a pulsed laser, and a receiving optical system for receiving the light source that reflects and returns to a target object. The lidar has been commonly used to measure the temperature, humidity, visibility distance, etc. in the air through the reflection and absorption of the laser, and recently, it is attached to the moving means to measure the terrain and features, terrain difficult to measure And measurement data such as elevation of the land, depth of the coast, and the like. In recent years, as the usage range of the lidar is expanded, the lidar has an internally rotatable axis to allow the entire scanning of the terrain and features for wider survey of terrain and features. It may be provided with a mirror that is rotated or reflects the light source irradiated by the lidar.

On the other hand, the aerial camera is mounted inside the mount installed on the floor of the aircraft to photograph the ground, to build spatial information, and to express perspective in recent years. A multi-camera aerial camera is also introduced. Therefore, if the data obtained through the lidar is fused to the aerial image obtained through the polygonal photographing, it will be possible to generate the drawing data containing the realistic and rich survey data.

[Document 1] Republic of Korea Patent No. 0983808 "Drawing method using 2D and 3D data" (2010.09.27.) [Document 2] Republic of Korea Patent No. 1009355 "Three Dimensional Spatial Image Mapping System for Terrain Images According to Numerical Information" (2011.01.19.)

The present invention synthesizes a 3D aerial photographing image generated by a digital photographing module composed of an elevation model generated by a lidar device and a plurality of individual cameras, each of which captures images of different angular sections. The purpose is to provide an image drawing synthesis system that can obtain drawing data.

In order to solve the above problems, the present invention is an apparatus for positioning GPS coordinates and transmitting the GPS coordinates to the outside through wireless communication, respectively, installed at three or more shooting reference points selected in an area where aerial photography is performed. A disk-shaped mounting member 110, a plurality of grooves 111 are formed in the, GPS receiver 120 is installed on the upper surface of the disk-shaped mounting member 110 to position the GPS coordinates of the shooting reference point is installed, Installed side by side in a circuit connected to the GPS receiver 120 and the GPS receiver 120, the radio transmitter 130, the disc-shaped mounting member 110 for transmitting the GPS coordinates to the outside through wireless communication A ring-shaped member 141 and a ring-shaped member 141 in which a plurality of grooves 111 and a plurality of bolt grooves 141-1 overlapped are formed as members to cover and protect the disc-shaped mounting member 110. Combined hemispheres A protective case 140 made of a cover member 142 covering the disc-shaped mounting member 110 in a dome shape as a cover, and a plurality of bolt grooves formed in the ring-shaped member 141 of the protective case 140. 1) and the bolt 151 disposed through the plurality of grooves 111 of the disc-shaped mounting member 110 and the nut 152 coupled to the bolt 151, the disc-shaped mounting member 110 ) And a fastening member 150 for fastening the cover member 140 and a fixing pin 160 provided in a vertical downward direction at the bottom center of the disc-shaped mounting member 110 to be embedded in the ground surface. GPS notification device 100; A GPS storage module 200 for receiving and storing GPS coordinates transmitted from the wireless transmitter 130 of the GPS notification device 100; A lidar device 300 installed on the aircraft to collect height information on the features of the earth surface by scanning a laser beam-producing area 300 to generate an elevation model; An elevation model storage module 400 for storing an elevation model generated by the lidar device 300; 3D aerial image data is generated by digitally shooting the aircraft and correcting an overlapping area among the plurality of individual cameras and the areas photographed by the plurality of individual cameras, each of which photographs images of different angular sections. A digital photographing module 500 consisting of a three-dimensional image synthesizer; An image storage module 600 for storing 3D aerial photographing image data generated by the digital photographing module 500; Synthesize the 3D aerial photographing image data stored by the elevation model and the image storage module 600 stored in the elevation model storage module 400, but the photographing reference points extracted from the elevation model and the 3D aerial photographing image coincide with each other. A drawing module 700 for generating drawing image data by correcting the three-dimensional aerial photographing image so as to be generated; And extracting and synthesizing the GPS coordinates of the photographing reference points displayed on the drawing image data among the GPS coordinates stored in the GPS storage module 200, and corresponding GPS coordinates according to the relative positions of the points on the drawing image data. And a numerical information synthesizing module 800 for synthesizing the digital information.

According to the present invention, the 3D aerial photographing image generated by the digital photographing module composed of a plurality of individual cameras photographing images of different angular sections is synthesized with the elevation model generated by the lidar device. It is possible to obtain image drawing data added with precise numerical information.

1 is a block diagram of an image drawing synthesis system for drawing a video image of a feature according to the present invention.
2 is a block diagram of a GPS notification device of an image mapping composition system for drawing a video image of a feature according to the present invention.
3 is a layout example of a camera applied to a digital photographing module of an image mapping composition system for drawing an image of a feature according to the present invention.

Hereinafter, a detailed description will be given with reference to the accompanying drawings of an image drawing synthesis system for drawing a video image of a feature according to the present invention.

1 is a block diagram of an image mapping composition system for drawing a video image of a feature according to the present invention.

1 is a plurality of GPS notification device 100, GPS storage module 200, lidar device 300, elevation model storage module 400, digital photographing module 500, image storage module ( 600), the drawing module 700 and the numerical information synthesizing module 800.

The GPS notification device 100 is a device that is installed at each of three or more shooting reference point selected in the area where aerial photography is carried out to position the GPS coordinates and transmit the GPS coordinates to the outside through wireless communication. In general, aerial shooting is performed by setting three or more shooting reference points in a shooting area. The shooting reference point serves as a reference when connecting and editing several aerial photographs or inputting numerical data. The GPS notification device 100 is installed in such a shooting reference point serves to inform the outside by positioning the GPS of the shooting reference point.

2 is a block diagram of a GPS notification device 100 of an image mapping composition system for drawing a video image of a feature according to the present invention. The GPS notification device 100 of FIG. 2 has a disc-shaped mounting member 110 having a plurality of grooves 111 formed at an edge thereof, and is installed on an upper surface of the disc-shaped mounting member 110 to have a photographing reference point installed thereon. A GPS transmitter 120 for positioning GPS coordinates and a wireless transmitter installed side by side in a circuit connection with the GPS receiver 120 to transmit GPS coordinates for measurement by the GPS receiver 120 to the outside through wireless communication. 130, a plurality of grooves 111 and overlapping bolt grooves 141-1 formed on an edge of the disc-shaped mounting member 110 as a member to cover and protect the disc-shaped mounting member 110. Protective case 140 consisting of a ring-shaped member 141 and a cover member 142 covering the disc-shaped mounting member 110 in a dome shape as a hemispherical cover coupled to the ring-shaped member 141, the protective case 140 And a plurality of bolt grooves (141-1) formed in the ring-shaped member 141 of the) The disk-shaped mounting member 110 and the bolt 151 is disposed through the plurality of grooves 111 of the disk-shaped mounting member 110 and the nut 152 coupled to the bolt 151 It comprises a fastening member 150 for fastening the cover member 140 and a fixing pin 160 is provided in the vertical downward direction at the bottom center portion of the disc-shaped mounting member 110 is buried in the ground surface.

Since the GPS receiver 120 is to position information to be added to the picture image data, it is preferable that the GPS receiver 120 is configured with a high precision GPS receiver. In addition, the radio transmitter 130 is connected to the GPS receiver 120 in a circuit to modulate the GPS coordinates for the GPS receiver 120 into a radio signal to be sent to the radio frequency. Therefore, it is possible to implement a conventional radio transmitter composed of a radio frequency oscillator, an amplifier, a modulation device, and an antenna. On the other hand, since the GPS receiver 120 and the wireless transmitter 130 are installed at a point selected as a photographing reference point from a feature of a region where aerial photography is performed, the GPS receiver 120 and the wireless transmitter 130 must have their own power supply.

Meanwhile, the protective case 140 serves to protect the GPS receiver 120 and the wireless transmitter 130 from external moisture, first, etc., and the fixing pin 160 is the GPS notification device 100. Ensures that the feature is stable to the feature.

The GPS storage module 200 is a module for receiving and storing GPS coordinates transmitted by the wireless transmitter 130 of the GPS notification device 100. The GPS storage module 200 may be provided in an aircraft or externally. The GPS storage module 200 is a wireless receiving device capable of receiving GPS information transmitted by the GPS notification device 100 through wireless communication, a signal processing device for decoding GPS information in the wireless receiving device, and the GPS information. It is implemented as a DB (Data Base) that is implemented on the server's hard disk or memory semiconductor.

The lidar device 300 is a device that is installed in the aircraft to collect the height information of the terrain feature by scanning a laser scanning the area where the aerial photographing to generate an altitude model. Specifically, the transmission optical system 310 irradiates a pulsed laser light source and the reception optical system 320 that receives the light source that reflects and returns to a feature of the ground surface. The lidar device 300 is attached to the aircraft to fly and scan the laser to the ground to measure the terrain and features through its reflection and absorption, so it is difficult to find the actual data such as altitude, coastal depth of the terrain and features, etc. To get it.

The lidar device 300 has an internally rotatable axis to enable wide-area scanning of a feature so that the lidar device 300 itself rotates along the axis or reflects a light source irradiated by the lidar. It may be configured to have a mirror.

The elevation model generated by the lidar device 300 is stored in the elevation model storage module 400. Specifically, the elevation model stores the elevation model by constructing a DB on a hard disk or a memory semiconductor.

The digital photographing module 500 is mounted on the aircraft to perform digital shooting, but corrects an overlapping region among a plurality of individual cameras and a region photographed by the plurality of individual cameras, each of which captures images of different angle sections. This module consists of a three-dimensional image synthesizer for generating three-dimensional aerial image data.

3 shows an embodiment of arrangement of a camera applied to a digital photographing module of an image drawing synthesis system for drawing an image of a feature according to the present invention.

Looking at the embodiment of Figure 3 it can be seen that the five cameras are fixed at different shooting angles, respectively. As shown in FIG. 3, when a plurality of individual cameras photographing images of different angular sections capture aerial photographing image data, overlapping regions are generated. The 3D image synthesizer overlaps image data photographed by a plurality of individual cameras. The region is post-processed to generate three-dimensional aerial image data.

The 3D aerial photographing image data generated by the digital photographing module 500 is stored in the image storage module 600. Specifically, the 3D aerial photographing image data is stored by constructing a DB on a hard disk or a memory semiconductor. do.

The drawing module 700 synthesizes an elevation model stored in the elevation model storage module 400 and three-dimensional aerial photographing image data stored by the image storage module 600, but the elevation model and the three-dimensional aerial photographing image A module for generating image data by correcting the 3D aerial image so that the extracted photographing reference points coincide with each other, and is implemented as a computer device equipped with a processor and software for performing the synthesis and the correction.

When the meshing module 700 first synthesizes the mesh model and the 3D aerial photographing image data, the drawing module 700 adjusts the composition so that the perspective angles appearing on the screen coincide.

The numerical information synthesizing module 800 extracts and synthesizes the GPS coordinates of the photographing reference points shown on the drawing image data from among the GPS coordinates stored in the GPS storage module 200, and based on this, the coordinates of the points on the drawing image data are synthesized. A module for synthesizing the corresponding GPS coordinates according to the relative position, and is implemented as a computer device equipped with a processor and S / W capable of operation for this.

The image data of which the GPS coordinates are synthesized by the numerical information synthesizing module 800 is a form in which the location information and the elevation value are input to the aerial photographing image, thereby becoming basic data used in various fields.

The present invention has been described in detail with reference to the accompanying drawings. However, the present invention is not limited only to the above embodiments, and various substitutions and modifications can be made without departing from the technical spirit of the present invention. Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

100: GPS notification device 110: disc-shaped mounting member
111: home 120: GPS receiver
130: wireless transmitter 140: protective case
141: ring-shaped member 141-1: bolt groove
142: cover member 150: fastening member
151: bolt 152: nut
160: fixed pin 200: GPS storage module
300: Lidar device 400: Altitude model storage module
500: digital recording module 600: image storage module
700: drawing module 800: numerical information synthesis module

Claims (1)

It is installed at the ground reference point selected from the ground more than three in the area where the aerial shooting is carried out to position the GPS coordinates and transmit the GPS coordinates to the outside through wireless communication, a plurality of grooves (111) ) Is formed on the disc-shaped mounting member 110, the GPS receiver 120, the GPS receiver 120 for positioning the GPS coordinates of the photographing reference point is installed on the upper surface of the disc-shaped mounting member 110 is installed; It is installed side by side in a circuit connected state and the GPS receiver 120 is a member for covering and protecting the wireless transmitter 130, the disc-shaped mounting member 110 to transmit the GPS coordinates for the outside to the outside via wireless communication. As a hemispherical cover coupled to the ring-shaped member 141 and the ring-shaped member 141 formed with a plurality of grooves 111 and the overlapping bolt grooves 141-1 formed on the edge portion of the disc-shaped mounting member 110 The disc A protective case 140 formed of a cover member 142 which transparently covers the tooth member 110 in a dome shape, and a plurality of bolt grooves 141-1 formed in the ring-shaped member 141 of the protective case 140; The disk-shaped mounting member 110 and the bolt 151 is disposed through the plurality of grooves 111 of the disk-shaped mounting member 110 and the nut 152 coupled to the bolt 151 GPS notification device comprising a fastening member 150 for fastening the cover member 142 and a fixing pin 160 which is provided in a vertical downward direction at the bottom center of the disc-shaped mounting member 110 is buried in the ground surface 100;
A GPS storage module 200 which receives the GPS coordinates of the photographing reference point transmitted by the wireless transmitter 130 of the GPS notification device 100 together with the corresponding unique number and stores them in the assigned area;
A lidar device 300 which collects height information on a feature of the earth's surface by laser scanning an area that is installed in an aircraft and performs aerial photography, and generates an altitude model in association with the corresponding GPS coordinates of the photographing reference point. ;
An elevation model storage module 400 for storing the elevation model generated by the lidar device 300 in an allocated area;
The first to fifth cameras mounted on the aircraft and photographing the ground including the shooting reference points at different angles, respectively, and photographing the images taken by the first to fifth cameras based on the shooting reference points. A digital photographing module (500) consisting of a three-dimensional image synthesizer for correcting to overlap with each other to generate three-dimensional aerial photographing image data;
An image storage module 600 for storing 3D aerial photographing image data generated by the digital photographing module 500 in an allocated area;
Shooting reference points extracted from the elevation model and the 3D aerial photography image data are synthesized by combining the elevation model and the 3D aerial photography image data stored in the image storage module 600. A drawing module 700 for generating drawing image data by synthesizing and correcting the elevation model and the three-dimensional aerial photographing image so as to match each other; And
The GPS coordinates corresponding to the photographing reference points shown on the drawing image data are retrieved and updated from the GPS storage module 200 on the basis of the corresponding unique numbers, and based on the linear distance ratios of the adjacent points on the drawing image data. A numerical information synthesizing module 800 applying a corresponding GPS coordinate value; Image drawing synthesis system for drawing a video image for a feature, characterized in that configured to include.

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