WO2012057389A1

WO2012057389A1 - System for extracting a target area using a plurality of cameras, and method for same

Info

Publication number: WO2012057389A1
Application number: PCT/KR2010/008003
Authority: WO
Inventors: 김두현; 조기호; 전동운
Original assignee: 건국대학교 산학협력단
Priority date: 2010-10-27
Filing date: 2010-11-12
Publication date: 2012-05-03
Also published as: KR20120043995A

Abstract

The present invention relates to a system for extracting a target area using a plurality of cameras, and to a method for same. The aim of the present invention is to provide a system and method for performing real-time image acquisition and matching updates by employing a method that uses a resulting image matched in a frame of one camera, so as to perform real-time matching to an image frame of another camera, i.e. real-time tracing by updating images detected from a plurality of cameras and cross-matching. To achieve the above aim, the system of the present invention includes: a plurality of camera devices, each acquiring an image of a target; a tracing device for tracing a target area by using an image inputted in real time from the camera device; and a monitoring device for controlling the tracing device according to control information from the user and continuously outputting an image that traces the target area.

Description

Region of interest extraction system using multiple cameras and method

The present invention relates to a region of interest extraction system using a plurality of cameras and a method thereof, and more particularly, to a method of image acquisition and processing using a plurality of cameras.

In the conventional method of tracking a region of interest, a plurality of cameras have been a method of independently tracking a region of interest. However, this method was difficult to track at the same time with respect to the moving object, there was a problem that it is impossible to check whether the same area is the result of tracking.

The present invention has been made in view of the above problems, using a matched result image in one camera frame to match in real time to the image frame of another camera, that is to update the image detected by a plurality of cameras By using a cross-matching real-time tracking scheme, an object thereof is to provide a system and a method in which image acquisition and matching update can be made in real time.

The present invention for achieving the above technical problem relates to a region of interest extraction system using a plurality of cameras, a plurality of camera apparatuses, each camera device for obtaining an image for a target; A tracking device for tracking a region of interest using an image input in real time from the camera device; And a monitoring device that controls the tracking device according to user control information and continuously outputs an image tracking the ROI. Characterized in that it comprises a.

Meanwhile, the present invention relates to a method for extracting a region of interest using a plurality of cameras, wherein (a) a plurality of camera apparatuses installed on a specific object at a predetermined distance on the same horizontal line to acquire images of a target at the same angle of view, respectively. step; (b) receiving, by the monitoring device, control information of a user; (c) setting, by the tracking device, a region of interest in an initial image input from a first camera of the camera device based on control information of a user input through the monitoring device; (d) the tracking device matching the ROI set according to the control information of the user with an image frame of the first camera; (e) temporarily storing, by the tracking device, the resultant image matched with the image frame of the first camera; (f) the tracking device matching the resultant image stored in step (e) with a frame of a second camera; (g) temporarily storing, by the tracking device, the matched result image through step (f); (h) the tracking device matching the result image stored in step (g) with the frame of the first camera; And (i) determining, by the tracking device, whether the user's control information regarding the end of the ROI tracking is input through the monitoring device, and ending the tracking if the tracking device is input. Characterized in that it comprises a.

According to the present invention as described above, the image acquisition and matching updates are made in real time, and at the same time there is an effect that can continuously track the region of interest by analyzing the matching information.

In addition, according to the present invention, there is an effect capable of tracking a region of interest in a moving or rotating region of interest and various terrain conditions.

In addition, according to the present invention, not only a simple observation camera for checking the presence and absence of a person, but also a closed camera used in a bank, a large sales office, a prison, a company, a public period, etc., has an effect that can be applied.

1 is an overall configuration diagram conceptually showing a region of interest tracking system using a plurality of cameras according to an embodiment of the present invention.

2 is an exemplary view for extracting a region of interest in an image acquired through two camera apparatuses according to an embodiment of the present invention.

3 is a flowchart illustrating a method for tracking a region of interest using a plurality of cameras according to an embodiment of the present invention.

[Description of the code]

S: ROI tracking system using multiple cameras

100: camera device 110: first camera

120: second camera 200: tracking device

210: ROI setting unit 220: First matching unit

230: first buffer unit 240: second matching unit

250: second buffer unit 300: monitoring device

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. In the meantime, when it is determined that the detailed description of the known functions and configurations related to the present invention may unnecessarily obscure the subject matter of the present invention, it should be noted that the detailed description is omitted.

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

A region of interest tracking system using a plurality of cameras according to an embodiment of the present invention will be described with reference to FIGS. 1 to 2.

1 is an overall configuration diagram conceptually showing a region of interest tracking system S using a plurality of cameras according to an embodiment of the present invention, and FIG. 2 is two camera apparatuses 100 according to an embodiment of the present invention. This is an example for extracting a region of interest in an image acquired through).

As shown in FIG. 1, the camera device 100 includes a camera device 100, a tracking device 200, and a monitoring device 300.

The camera apparatus 100 is a plurality of camera apparatuses installed at a predetermined distance on a same horizontal line on a specific object, and acquires images of targets at the same angle of view, respectively.

In the present embodiment, the camera device 100 is set to two first cameras 110 and two second cameras 120, but the present invention is not limited thereto. In addition, in the present embodiment, not only the camera device 100 may be installed on the aircraft, but also may be installed and used on a specific object in the room.

In addition, the tracking device 200 performs a function of tracking a region of interest using an image input in real time from the camera apparatus 100, as shown in FIG. 1, the region of interest setting unit 210. The first matching unit 220 includes a first matching unit 220, a first buffer unit 230, a second matching unit 240, and a second buffer unit 250.

Specifically, the ROI setting unit 210 may be the first input from the first camera 110 of the camera apparatus 100 based on the user's control information regarding the ROI input through the monitoring apparatus 300. Sets a region of interest in the image or sets a pre-stored image as the region of interest.

Meanwhile, the ROI setting unit 210 determines whether the control information of the user regarding the end of the ROI tracking is input through the monitoring apparatus 300, and terminates the tracking if it is input.

The first matching unit 220 matches the ROI set according to the control information of the user with the image frame of the first camera 110. Meanwhile, when a matched result image is transmitted from the second buffer unit 250, the matched result image is matched to a frame of the first camera 110.

The first buffer unit 230 temporarily stores the result image matched by the first matching unit 220.

The second matching unit 240 matches the result image stored in the first buffer unit 230 with the frame of the second camera 120.

The second buffer unit 250 temporarily stores the result image matched by the second matching unit 240.

In addition, the monitoring device 300 controls the tracking device 200 according to the user's control information, and continuously outputs an image tracking the ROI.

Here, the image output through the monitoring device 300 includes an image input from the first camera 110 and the second camera 120 of the camera device 100 and an image tracking the ROI.

That is, the present invention can be understood that the ROI tracking is repeated by matching the image frame of another camera in real time using the resultant image matched in the frame of one camera.

Accordingly, image acquisition and matching update are performed in real time, and at the same time, the ROI can be continuously tracked by analyzing the matching information.

Hereinafter, a method of tracking a region of interest using a plurality of cameras using a plurality of cameras using the system described above will be described with reference to FIG. 3.

3 is a flowchart of a method for tracking a region of interest using a plurality of cameras using a plurality of cameras according to an embodiment of the present invention. As shown in FIG. The first camera 110 and the second camera 120 of 100 obtain images of the target at the same angle of view, respectively (S10), and the monitoring device 300 receives the user's control information (S20).

Subsequently, the ROI setting unit 210 of the tracking device 200 based on the user's control information regarding the ROI setting input through the monitoring device 300, the first camera 110 of the camera apparatus 100. A region of interest is set in the initial image inputted from), or a pre-stored image is set as the region of interest (S30).

Thereafter, the first matching unit 220 matches the ROI set according to the user's control information with the image frame of the first camera 110 (S40), and the first buffer unit 230 matches the first matching unit. In step S50, the matched result image is temporarily stored (S50).

Subsequently, the second matching unit 240 matches the result image stored in the first buffer unit 230 with the frame of the second camera 120 (S60), and the second buffer unit 250 matches the second matching unit. In step S70, the matched result image is temporarily stored (S70).

Thereafter, the first matching unit 220 matches the result image stored in the second buffer unit 250 with the frame of the first camera 110 (S80).

Thereafter, the ROI setting unit 210 determines whether the control information of the user regarding the end of the ROI tracking is input through the monitoring apparatus 300, and terminates the tracking if it is input. The procedure of step S80 is repeated.

As described above and described with reference to a preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described as described above, it is a deviation from the scope of the technical idea It will be understood by those skilled in the art that many modifications and variations can be made to the invention without departing from the scope of the invention. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims

In the ROI tracking system using a plurality of cameras,

A plurality of camera apparatuses, each comprising: a camera apparatus (100) for acquiring an image for a target;

A tracking device (200) for tracking a region of interest using an image input in real time from the camera device (100); And

A monitoring device 300 that controls the tracking device 200 according to control information of a user and continuously outputs an image of tracking an ROI; A region of interest tracking system using a plurality of cameras, comprising a.
The method of claim 1,

The camera device 100,

At least two or more camera devices installed at a predetermined distance on the same horizontal line of the specific object, the area of interest tracking system using a plurality of cameras, characterized in that obtained at the same angle of view.
The method of claim 1,

The tracking device 200,

Based on the control information of the user input through the monitoring device 300, the ROI setting unit 210 for setting an ROI in the initial image input from the first camera 110 of the camera device 100. ;

A first matching unit 220 matching the ROI set according to the control information of the user with an image frame of the first camera 110;

A first buffer unit 230 for temporarily storing the result image matched by the first matching unit 220;

A second matching unit 240 for matching a result image stored in the first buffer unit 230 to a frame of the second camera 120; And

A second buffer unit 250 for temporarily storing the result image matched by the second matching unit 240; Including,

The first matching unit 220,

When the matched result image is transmitted from the second buffer unit (250), the region of interest tracking system using a plurality of cameras, characterized in that matching the matched result image to the frame of the first camera (110).
The method of claim 3, wherein

The region of interest setting unit 210,

And determining whether or not the control information of the user regarding the end of the ROI tracking is input through the monitoring apparatus 300, and ending the tracking if the user inputs the ROI.
In the method for tracking a region of interest using a plurality of cameras through a system including a camera device 100, a tracking device 200, and a monitoring device 300,

(a) acquiring an image of a target by the camera apparatus 100 at the same angle of view;

(b) receiving the control information of the user by the monitoring device 300;

(c) The region of interest in the initial image input from the first camera 110 of the camera apparatus 100 based on the control information of the user inputted by the tracking apparatus 200 through the monitoring apparatus 300. Setting up;

(d) the tracking device 200 matching the ROI set according to the control information of the user with an image frame of the first camera 110;

(e) temporarily storing the resultant image matched to the image frame of the first camera by the tracking device 200;

(f) the tracking device 200 matching the result image stored through the step (e) with the frame of the second camera 120;

(g) temporarily storing, by the tracking device, the result image matched through step (f);

(h) the tracking device 200 matching the result image stored through the step (g) with a frame of the first camera 110; And

(i) determining, by the tracking device 200, whether or not the user's control information regarding the end of the ROI tracking is input through the monitoring device 300, and terminating the tracking if the tracking device 200 is input; A region of interest tracking method using a plurality of cameras, comprising a.
The method of claim 5,

(j) If it is not input as a result of the determination of step (i), the tracking device 200 repeats the steps of (e) to (h). Zone tracking method.