KR101942998B1 - 3D FGIS omitted - Google Patents

Abstract

Disclosed is an image position tracking system based on a forest geographic information system (FGIS). The present system comprises a database (110) including a first memory (112) that stores 3D numerical elevation model map representing the shape of a forest topography by storing the altitude value of the forest topography as a numerical value; a second memory (114) that includes a horizontal movement detection sensor and a vertical movement detection sensor and that periodically receives and stores an image of a forest area photographed by a camera (150) previously installed at a predetermined location; a third memory (116) that receives and stores an image of a forest area photographed by the GPS (160), and the like. According to the present invention, in order to protect forests in mountainous areas, it is possible to quickly monitor in real time in forest fire surveillance, fire surveillance and the like.

Description

3D FGIS based visual image location tracking system {omitted}

The present invention relates to FGIS. And more particularly, to a system equipped with software for tracking the position of an image to be displayed on the basis of a captured image.

Forest Geographic Information System (FGIS) has recently been used for the purpose of easily identifying the location of a fire occurrence area and facility within a specific radius through a screen transmitted from a camera such as a closed circuit television installed in the mountainous area for forest protection It is becoming an issue.

Korean Patent No. 10-1596142 discloses a position tracking system that provides surrounding geographical information along with a video of a wearer of a position tracking electronic device. The position tracking system receives GPS information from a portable tracking device of an attached person, Analyze and track the image that captures the image. However, it is costly to keep track of the attachments, and there is a limit in that fixtures installed at fixed locations can not continuously provide accurate information as much as the attachments.

In addition, in a forest monitoring apparatus having a conventional closed circuit television, a camera of a closed circuit television is installed at one point in the mountainous area, and the mountainous region is photographed while rotating in the front, rear, left, and right or up and down directions. Then, the camera transmits the photographing information to the image receiving apparatus installed in the forest monitoring headquarters of the nearby area. Next, the image receiving apparatus displays an image screen transmitted from the camera through a plurality of monitors connected to the image receiving apparatus. The user, the forest watchman, then checks the screen displayed on the monitor to check whether the forest is safe or not. In this case, when a situation requiring a relief to the forest (for example, fire or the like) occurs, it is difficult to easily recognize in which direction the camera of the CCTV camera is photographed, It is difficult to grasp easily.

Korean Patent No. 10-1596142 (Feb.

The present invention relates to a 3D FGIS system which is operated most reliably in a window environment, in particular, integrating spatial information and non-spatial information related to a 3D map to perform the most important distance, coordinate display, storage, search, And a 3D FGIS system.

According to an aspect of the present invention, an image position system based on a forest geographic information system (FGIS) includes a first memory 112 (a storage area for storing a three-dimensional digital elevation model map representing a shape of a forest topography) A second memory 114 including a horizontal movement detection sensor and a vertical movement detection sensor and periodically receiving and storing a forest area image photographed by a camera 150 previously installed at a predetermined position, The third memory 116 receives and stores a forest area image and determines whether the image is reliable based on a predetermined mild stone on the position data obtained from the database 110, .

According to the present invention, in order to protect forests in mountainous areas, it is possible to quickly monitor in real time from forest fire monitoring and fire monitoring.

According to the present invention, it is possible to accurately and quickly obtain information on the fire-fighting facilities and the fire range by detecting impacts or changes in the radius of the main area or the main area. That is, when a fire is detected on the camera surveillance screen, the position of the azimuth coordinates is visually clearly expressed intuitively on the screen, so that the information on the fire range, the distance measurement, and the position of the adjacent road can be easily and clearly understood.

FIG. 1 illustrates a 3D FGIS based display image position tracking system according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in order to clearly illustrate the present invention in the drawings, portions not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar components.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 illustrates a 3D FGIS-based display image position tracking system for a forest area according to the present invention.

Referring to FIG. 1, a system 100 according to the present invention includes a database 110, a processor 120, a display unit 130, or an input unit 140.

The database 110 includes a first memory 112 storing a 3D numerical elevation model map indicating the shape of the terrain by numerically storing the elevation values of the terrain, a horizontal movement detection sensor and a vertical movement detection sensor, A second memory 114 for periodically receiving and storing forest area images photographed by a camera 150 installed in advance, and a third memory 116 for receiving and storing forest area images photographed by a satellite (GPS) 160 .

More specifically, the first memory 112 stores the values of the terrain accumulated in the FGIS in a three-dimensional map shape. The second memory 114 stores images taken periodically (e.g., daily, hourly, weekly, etc.) from the camera 150 installed by the administrator. At this time, the camera 150 includes a horizontal movement detection sensor and a vertical movement detection sensor. The captured image and the data sensed by the sensors at the corresponding time are indexed and stored together or transmitted to the system 100. The third memory 116 receives a user's input from the input unit 140 or receives and stores an image captured by the GPS according to a command from the processor 120. [

The processor 120 stores, retrieves, outputs, and analyzes forest area-related spatial information and non-spatial information stored in the first to third memories.

The display unit 130 displays the processing result of the processor to the user.

According to the present invention, at least one of points where an extension of a fixed direction viewed by the camera 150 installed beforehand meets an area on a predetermined three-dimensional digital elevation model map stored in advance in the first memory 112 A mild stone 170 is installed. The mild stone 170 may be any shape such as a flag, an antenna, a tree, a stone, or the like, provided that the camera 150 or the satellite 160 can capture and recognize it.

The position information of the mild stone 170 can be obtained from the images taken by the camera 150 and the satellite 160, respectively.

The camera 150 periodically analyzes the images captured by the GPS on the basis of the user's input and analyzes whether the position information of the mild stone 170 obtained from each image is within a predetermined first reference value range . That is, the processor 120 analyzes whether or not the mild stone 170 has moved. Accordingly, when the position information of the mild stone obtained from each image is different from a predetermined first reference value or more, the processor 120 determines that a mild stone position abnormality has occurred.

If the processor 120 determines that the mild stone position is abnormal, the processor 120 sets a predetermined radius range of the area where the mild stone is installed as a main area, and sets a predetermined radius area Sends additional shooting command to shoot from GPS.

Then, the processor 120 instructs the display unit 130 to superimpose the image photographed by the GPS on the local screen on the 3D numerical altitude model map, and to output the image centered on the main area.

In addition, the processor 120 superimposes an image photographed by the GPS on a local screen on a 3D digital elevation model map, superimposes an image photographed in a radial area of a set size preset by the camera 150 on the displayed map .

On the other hand, when the input of the user instructing the shooting of the GPS is input, the processor 120 determines that the center of the overlapping area of the shooting area of the camera and the shooting area of the GPS is matched with the position of the mild stone The display unit 130 enlarges and displays a radius area of the first set size around the mild stone based on the 3D numerical elevation model map indicating the shape of the terrain by storing the altitude value of the terrain in the display unit 130, .

In an exemplary embodiment of the present invention, information detected by the horizontal movement detection sensor and the vertical movement detection sensor interlocked with the camera 150 is analyzed to determine whether the horizontal or vertical movement value of the camera 150 is within a predetermined second reference value Analyze. That is, it is determined whether the camera 150 does not move too much in the horizontal or vertical direction to provide a reliable image.

In one example according to the present invention, the camera 150 photographs a predetermined mild stone 170 installed in the forest based on a plurality of foci. At this time, the processor 120 performs curve fitting based on the plurality of focal points of the image photographed by the camera 150, and calculates and processes a deflection value for deflection correction processing.

At this time, in calculating the deflection value, the processor 120 sets a focus having a maximum focus measurement value as a reference focus f _p ; And sampling a plurality of previous focuses (f _pn ... f _p-1 ) and a plurality of subsequent focuses (f _{p + 1} ... f _{p + n} ) about the reference focus (f _p ) ; Squaring the focus measurement of the sampled focus (y ² _pn ... y ² _p-1 , y ² _{p + 1} ... y ² _{p + n} ); (S ₀ = y ² _pn + ... y ² _p-1 ) and summing squared values for a plurality of foci after the reference focal point ₁ = y ² _{p + 1} + ... y ² _{p + n} ); And the sum (S ₀ , S ₁ ) of the reference focus (f _p ) and the sum (S ₀ , S ₁ ). This allows more cameras 150 to capture reference points with less geopolitical impact.

In one example according to the present invention, the processor 120 comprises: receiving satellite signals from a plurality of satellites; Demodulating satellite data received from a predetermined satellite among the plurality of satellites using a pseudo random noise code and a carrier corresponding to the satellite signal; Estimating information on satellite data at a current point in time among the demodulated satellite data based on a real time clock counter; And determining the current position of the mild stone based on the estimated information on the satellite data at the current time point, the location information of the mild stone 170 can be obtained from the GPS photographed image.

At this time, in order to increase the accuracy of the position information of the mild stone 170 obtained from the GPS photographed image, the processor 120 estimates information about the satellite data at the current time by using the following preamble signal for frame synchronization of the satellite data And performs frame lock using the demodulated satellite data before reception. Then, information on the frame at the current time is estimated with respect to the frame of the satellite data generated by the frame lock.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention as defined by the appended claims. Should be regarded as belonging to the above-mentioned patent claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. But is not limited thereto.

In the above-described exemplary system, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders . It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.

Claims (6)

1. An image position tracking system based on a Forest Geographic Information System (FGIS)
A first memory 112 storing a map of a 3D digital elevation model representing the shape of the forest topography by storing the elevation value of the forest topography as a numerical value, a camera 112 including a horizontal movement detection sensor and a vertical movement detection sensor, A second memory 114 for periodically receiving and storing forest area images photographed by the GPS 150 and a third memory 116 for receiving and storing the forest area images photographed by the GPS 160, );
A processor (120) for storing, retrieving, outputting and analyzing forest image related spatial information and non-spatial information stored in the first to third memories; And
And a display unit (130) for displaying a processing result of the processor (120) to a user,
The processor 120 may determine whether or not the mild stone 170 is installed on at least one of the points where the extension line of the fixed direction viewed by the camera 150 installed beforehand meets an area on the predetermined three- Acquiring position information,
The processor 120 performs a combined analysis of the image periodically photographed by the camera 150 and the image photographed by the GPS 160 so that the position information of the mild stone 170 obtained from each image is converted into a predetermined image 1 < / RTI > reference value range,
If the position information of the mild stone 170 obtained from each of the images is within a predetermined first reference value, a radial area of a predetermined set size around the mild stone 170 based on the three- Instructs the display unit 130 to display the enlarged image,
When the position information of the mild stone 170 obtained from each image is different from a predetermined first reference value or more, the processor 120 determines that a mild stone position abnormality has occurred,
If it is determined that the mild stone position abnormality occurs, the processor 120 sets a predetermined radius range of the area where the mild stone 170 is installed as a main area, and sets a predetermined radius An additional shooting command to shoot an area in the GPS,
The processor 120 displays an image photographed further by the GPS in a superimposed manner on a local screen on the 3D digital elevation model map and commands the display unit 130 to output the main region as a center,
The processor 120 superimposes an image photographed further by the GPS on a local screen on the 3D digital elevation model map and displays the image photographed in the radius area of the set size preset by the camera 150 Further commands to additionally superimpose and display,
The processor 120 analyzes the information detected by the horizontal movement detection sensor and the vertical movement detection sensor interlocked with the camera 150 to determine whether the horizontal or vertical movement value of the camera 150 is within a predetermined second reference value Determines whether the pre-installed camera 150 moves excessively in the horizontal or vertical direction to provide a reliable image,
The camera 150 photographs the mild stone 170 installed in the forest on the basis of a plurality of focal points,
The processor 120 performs curve fitting based on the plurality of focuses and calculates a deflection value for the deflection correcting process,
The processor 120, based on the focus has the maximum value of the focus measurement focus (f _p) to set, and the reference focus (f _p) to the center of the previous plurality of focus (f _pn ... f _p-1 ) And a plurality of subsequent focuses (f _{p + 1} ... f _{p + n} ), and calculates a focus measurement value of the sampled focus by a square (y ² _pn ... y ² _p-1 , y ² _{p +1} ... y ² _{p + n)} and the sum of the square value of the plurality of focus of the reference focus before and (S ₀ = y _pn ² + y ² ... since _p-1), based on focus the sum of the square value of the plurality of focus and ^{_{(S 1 = y 2 p +}} 1 + ... y 2 p + n), the reference focus (f _p) and the summed result (S _0, S ₁₎ To calculate said deflection value. delete delete delete The method according to claim 1,
The processor 120 receives a satellite signal from a plurality of satellites, demodulates the satellite data received from a predetermined satellite among the plurality of satellites using a pseudo noise code and a carrier corresponding to the satellite signal , Estimates information on the satellite data at the current point in time among the demodulated satellite data based on the real time clock counter, and determines the current position of the mild stone (170) based on the estimated information on the satellite data at the current point of time To obtain the position information of the mild stone (170) from the GPS photographed image. 6. The method of claim 5,
The processor 120 performs frame lock using the demodulated satellite data before receiving a next preamble signal for frame synchronization of the satellite data, and transmits the satellite data generated by the frame lock Estimating information about the satellite data at the current time point by estimating information about the frame at the current time point with respect to the frame of the current time point.

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