KR20110078655A - A method and a system of filming using multiple camera - Google Patents

Abstract

PURPOSE: A method and a system of filming using a multiple camera are provided to automatically take a picture of a moving object. CONSTITUTION: A camera is established as a master camera among two or more cameras(S301). The master camera extracts distance information to an object(S302). A photographing direction information and a current location are extracted(S303). The information which is extracted from the master camera and processed is transmitted to slave cameras(S305). The direction of the object is calculated by comparing the information from each slave camera with location information of each camera and photographing direction information(S307).

Description

A Method and A System of Filming Using Multiple Camera

The present invention relates to a method and system for photographing using multiple cameras, and in particular, comprising two or more cameras, a position measuring module for knowing the current position information of the electronic compass and the camera in each camera, and a distance to a photographing subject. The distance measuring module is installed to measure the shooting direction information obtained from the electronic compass, the position measuring module and the distance measuring module of the master camera when shooting by setting any one of two or more cameras as a master camera. By using the camera location information, the distance information to the subject, the position information of the slave camera, and the shooting direction information, the shooting method and system using the multiple cameras that can capture the subject photographed by the master camera by changing the shooting direction at the same time It is about.

In general, when a user wants to photograph a specific scene or subject, the user photographs a desired scene or subject using a camera. Also, cameras equipped with electric compasses have been released for more accurate shooting, and a system for taking multiple shots using multiple cameras has also been developed.

First, as a conventional technology having an electronic compass, there is a panoramic automatic photographing apparatus and method using an electronic compass disclosed in Korean Patent Laid-Open No. 10-2005-0011348 (published on January 29, 2005). The technique disclosed in Korean Patent Laid-Open No. 10-2005-0011348 discloses a panorama using an electronic compass that can automatically photograph a subject by automatically photographing each time the camera rotates a predetermined angle based on the direction information of the electronic compass. As an automatic photographing apparatus and method, a technique of using an electronic compass to sense the direction of a camera and rotating a camera for photographing a subject based on the direction information by the electronic compass is described. Only the photographing direction information is known, and there is no description of the technical configuration for matching the photographing direction of another camera looking at the same subject. Therefore, there is a problem that the accuracy of photographing is poor.

As another conventional technology, there is a security monitoring system and method using a sensor and a camera disclosed in Korea Patent Registration No. 10-0685979 (registered on February 15, 2007). The technique disclosed in Korean Patent Registration No. 10-0685979 uses a sensor and a camera that enable active security monitoring of an arbitrary place by adjusting the shooting direction of the camera according to a detection signal of a sensor installed at a designated location. A surveillance system and method, comprising: calculating a rotation direction and a rotation angle of the rotation target camera based on current shooting direction information of the rotation target camera, and rotating the camera through a driving unit based on the calculated information. However, a sensor exists in each zone, and the camera driver rotates the camera so that the camera in the zone can look near the sensor through the sensor's identification number when the sensor detects it. Is a camera system based on the sensor's detection signal, There is a problem that the shooting direction is limited because the shooting direction is moved according to.

Another conventional technique is a multiple camera calibration method and system using a parallel laser beam disclosed in Korean Patent Publication No. 10-2009-0082816 (published on July 31, 2009). The technique disclosed in Korean Patent Publication No. 10-2009-0082816 discloses a method and system for calibrating a multi-camera using a parallel laser beam that enables the camera to be calibrated even when there is no overlapping view of the multi-camera. The present invention relates to a method of calibrating a camera by extracting a direction value between cameras in order to calibrate a plurality of cameras, but the purpose of the camera is to calibrate the laser beam. The measurement values for the direction and the distance are generated to extract the direction value and the parallel movement value between the cameras, and no consideration is given to the moving cameras.

Another conventional technique is a video motion tracking system for controlling a multi-surveillance camera disclosed in Korean Patent Laid-Open Publication No. 10-2002-0077976 (published on October 18, 2002). The technique disclosed in Korean Patent Laid-Open Publication No. 10-2002-0077976 uses a plurality of surveillance cameras and can control various surveillance cameras, and detects a video motion of a moving subject to be monitored and moves out of the surveillance region. The present invention relates to a video motion tracking system for controlling a multi-monitor camera that can track a moving subject at high speed by controlling the surveillance camera so as not to deviate. A plurality of surveillances for continuously capturing a motion image of a moving projectile for various situations in a predetermined place. Although the use of a camera is disclosed, there is no description on automatically photographing a subject photographed by the master camera automatically and simultaneously using the information obtained by the master camera and the information of the slave camera.

The present invention has been made in order to solve the problems of the prior art as described above, the problem to be solved is that all the slave cameras other than the master camera when shooting the subject at various positions through the multiple cameras the master camera To provide a shooting method and system using multiple cameras that can automatically change the camera shooting direction so that you can shoot the subject at the same time.

In addition, another problem to be solved by the present invention is that each of the slave cameras to take a picture of the subject in the master camera even when one or more cameras and / or the subject is moving when shooting the subject from a variety of locations through multiple cameras The present invention provides a photographing method and system using multiple cameras capable of simultaneously photographing by changing photographing directions.

In order to solve the above problems, a feature of the present invention is a method for photographing a subject using two or more cameras each having a camera control unit provided with an electronic compass, a positioning module, and a distance measuring module. Selecting a camera photographing mode; selecting any one of the two or more cameras as a master camera; obtaining distance information of a subject photographed by the master camera by the distance measuring module; Obtaining shooting direction information captured by the master camera by the electronic compass, obtaining position information of the current master camera by the position measuring module, and subject distance information, shooting direction information, and position information obtained from the master camera. Camera control of each slave camera with processed information through wired or wireless communication network Receiving the information transmitted through the communication network by the communication unit of the camera control unit of each slave camera, and the position of the slave camera in the operation control unit installed at one side of the camera control unit of the slave camera. The present invention provides a multi-camera photographing method in which a master camera photographs a subject being photographed by obtaining a direction of a subject by comparing the information and photographing direction information and changing a direction of a slave camera according to the direction.

Another feature of the present invention to solve the other problem is a distance measuring module for measuring the distance information of the subject to the camera control unit of the master camera operated by the user, the electronic compass to obtain the shooting direction information, the position to obtain the position information of the master camera The measurement module is mounted, and there is a communication unit for transmitting the information to each slave camera. The camera control unit of each slave camera compares the communication unit for receiving the information transmitted from the master camera, the position information obtained from the position measurement module of each slave camera, and the shooting direction information by the electronic compass. There is an arithmetic control unit for arithmetic, the arithmetic control unit is built-in memory and a microprocessor for executing arithmetic program, the camera control unit of each camera is connected through a wired or wireless communication network to take a picture of the camera in real time The present invention provides a multi-camera photographing system that photographs the same subject by changing a direction of a slave camera according to the photographing direction by calculating a direction.

According to the present invention, when shooting using two or more cameras, the user selects one of the multiple cameras as the master camera, and the other slave camera calculates the shooting direction so that the automatic shooting of one subject. The effect is that you can shoot from different angles at the same time.

Another effect of the present invention is to allow each slave camera to automatically capture a subject photographed by the master camera even when the position of at least one of the cameras is moving.

Another effect of the present invention can support shooting from various angles with a small number of people when producing a commercial image such as a movie or advertisement, and can effectively shoot when all the cameras move, as well as a camera system for security surveillance In this case, it is used to make a more thorough situation determination even when a special situation occurs (for example, when the suspect escapes), so that an effective security surveillance system can be implemented and operated.

First, prior to explaining the embodiment of the present invention will be described the basic concept for the implementation of the present invention.

According to the present invention, when a user selects only one camera when photographing using two or more cameras to photograph a subject from various angles, the photographing direction is set so that the remaining cameras can photograph the subject photographed by the camera selected by the user. Shooting method and system using multiple cameras that change automatically.

Specifically, one feature of the present invention is the step of extracting the distance information to the subject photographed by the master camera, the step of extracting the shooting direction information captured by the master camera, and the current position information of the master camera ( Latitude, longitude value), transmitting distance processed information, shooting direction information, and location information from the master camera to each slave camera through a communication network, and receiving each slave camera. And comparing the information with the position information (latitude and longitude value) of the slave camera and the photographing direction information by the operation controller to change the photographing direction of the slave camera so that the subject can be photographed by photographing the subject. It is a photographing method using multiple cameras.

Another feature of the present invention, in the shooting system composed of several cameras, each camera control unit is installed in each camera, each camera control unit electronic compass to obtain the shooting direction information of the master camera when the user selects the master camera to shoot And a position measuring module for generating position information of the master camera, a distance measuring module for measuring a distance to a subject to be photographed, a communication unit for transmitting and receiving data generated by the camera controller through a communication network, and a subject through calculation. The photographing system using multiple cameras, comprising a calculation control unit for changing the direction of the camera by extracting the direction of the.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the embodiment of the present invention. Configuration and operation of the present invention shown and described in the drawings are described as at least one or more embodiments, by which the technical spirit of the present invention and its core configuration and operation is not limited.

First, FIG. 1 is a schematic block diagram of a photographing system using multiple cameras designed and manufactured according to the present invention.

In Fig. 1, the user remotely selects one of the cameras as a master camera using a computer device in the control center (situation room) 50 to select one of several cameras as the master camera, and this fact, that is, master camera or slave. Information about whether the camera is a camera can be transmitted to each camera through the network 120, or the user directly selects the master camera by pressing a hardware button or a software button on the camera body that the user wants to select as the master camera, and the selected master A packet can be sent from the camera to the rest of the cameras containing commands to act as slave cameras.

In FIG. 1, the camera control unit 10 of the camera 17 selected by the user as the master camera extracts the electronic compass 13 and the position information of the camera 17 to obtain the current photographing direction of the camera 17. The position measuring module 14 is provided, and the distance measuring module 15 capable of measuring the distance to the subject 40 to be photographed is also provided. In addition, the operation control unit for estimating the longitude and latitude values of the position information of the subject 40 with the subject distance information, the shooting direction angle 1 which is the current shooting direction, and the position information 1 16 which is the position information of the current camera ( 12) and a communication unit 11 for transmitting information generated by the camera control unit 10 to each slave camera is also provided. The distance measuring module 15 installed in the camera control unit 10 of the master camera may be configured using at least one of sound wave detection, stereovision, infrared beam, and laser beam, and the position measuring module 14 is GPS It may be configured using one or more of A-GPS (Assisted GPS).

In the example of FIG. 1, the configuration of the camera control unit 20 of the slave camera 1 27 is the same as that of the camera control unit 10 of the master camera 17. The configuration of the camera control unit 30 of the other slave camera 2 37 is also the same as that of the camera control unit 10 of the master camera 17.

In the example of Figure 1, the slave camera 1 (27) is the position information 2 of the slave camera 1 (27), the shooting direction angle 2, in order to obtain a shooting direction for shooting the subject photographed by the master camera 17 Position information x 26 of the subject 40 is used. In addition, the slave camera 2 (37) is the position information 3, the shooting direction angle 3, the subject of the slave camera 2 (37) in order to obtain a shooting direction for shooting the subject 40 to be photographed by the master camera 17 The positional information x 36 of 40 is used.

FIG. 2 is a diagram illustrating one example that can be implemented in a photographing system using multiple cameras according to the present invention, and illustrates a flow of information between a master camera and a slave camera.

In the camera control unit 100 of the master camera, the current photographing direction information is obtained by the electronic compass 101, the distance measuring module 102 generates distance information to the subject to be photographed, and the position measuring module 103 Longitude and latitude values, which are current position information of the master camera, are generated, and the information is transmitted to the communication unit 104 so that the information can be transmitted to each slave camera through the communication network 120. In this case, the communication network 120 may be configured by wire or wirelessly. The camera control unit 110 of each slave camera receives the information transmitted from the master camera in the communication unit 111 and sends it to the operation control unit 114. In addition, the operation control unit 114 obtains the current photographing direction of the slave camera by the electronic compass 112, and obtains the current position of the slave camera by the position measurement module 113. The operation control unit 114 extracts the subject distance information, the master camera position information, and the photographing direction information based on the information transmitted from the master camera, and based on the information, the position information of the subject is a pair of latitude and longitude. Estimate as The operation control unit 114 compares the subject position information with the photographing direction information generated by the electronic compass 112 and the position information generated by the position measuring module 113 to finally calculate the direction of the subject to be photographed by the slave camera. Information is generated, and the photographing direction of the slave camera is changed according to the direction information.

3 is a view showing another example that can be implemented in a photographing system using multiple cameras according to the present invention, and shows a flow of information between a master camera and a slave camera. The difference from FIG. 2 is that the calculation control unit 204 of the master camera estimates the positional information of the subject.

Specifically, the camera control unit 200 of the master camera obtains the current photographing direction information by the electronic compass 201, and generates distance information to the subject to be photographed by the distance measuring module 202. The longitude and latitude values, which are the current position information of the master camera, are generated from the measurement module 203, and the information is transmitted to the operation controller 204. The calculation controller 204 compares and calculates the subject distance information, the master camera position information, and the photographing direction information to estimate the position information of the subject as a pair of latitude and longitude. When the position information of the subject is generated in this way, the position information is sent to the communication unit 205 so that the information can be transmitted to each slave camera through the communication network 120 at all times. In this case, the communication network 120 may be configured by wire or wirelessly. The camera control unit 210 of each slave camera receives the information transmitted from the master camera in the communication unit 211 and sends it to the operation control unit 214. In addition, the operation control unit 214 obtains the current photographing direction of the slave camera by the electronic compass 212, and obtains the current position of the slave camera by the position measuring module 213. The operation controller 214 compares the position information of the subject transmitted from the master camera with the photographing direction information generated by the electronic compass 212 and the position information generated by the position measurement module 213 to finally calculate the slave. The camera generates direction information of a subject to be photographed, and changes the photographing direction of the slave camera according to the direction information.

4 is a flowchart illustrating a photographing method using multiple cameras according to an exemplary embodiment of the present invention. A photographing method using a multiple camera according to an exemplary embodiment of the present invention will be described with reference to FIG. 4.

When the user selects the multi-camera shooting mode (S300) to enable the shooting method using the multi-camera, the user selects any one camera among the multiple cameras as the master camera (S301). In this case, the selecting steps S300 and S301 may be implemented through hardware or software buttons. When the user starts shooting with the master camera, the distance to the subject is extracted through the camera control unit of the master camera (S302), and at the same time, the position information and the current shooting direction of the master camera are extracted (S303). The extracted information is processed to generate data (S304), and the data is transmitted to each slave camera (S305). Each slave camera receives the information transmitted from the master camera (S306), and compares the position information and the shooting direction information of each slave camera with the information received from the master camera to extract the slave camera's shooting direction (S307). ). The photographing direction of the slave camera is changed in accordance with the calculated result (S308). Until the end signal is input (S309), the process of extracting the distance from the master camera to the subject (S302) to changing the photographing direction of the slave camera (S308) is repeated.

5, 6, and 7 are diagrams illustrating a rotation state of each camera according to the movement of a subject and / or each camera when photographing Pisa using a photographing system using multiple cameras.

For example, as shown in FIG. 5, when the user photographs the subject 40 using the master camera 17, the other slave cameras 27 and 37 automatically change the photographing direction to photograph the subject. At this time, the internal execution procedure is as shown in FIG.

Next, when the subject 40 moves to another position as shown in FIG. 6, the photographing direction is changed by the user continuously photographing along the subject 41 moving to the master camera 17. The slave cameras 27 and 37 also change their shooting directions so that they can simultaneously perform an operation and photograph the subject automatically.

In addition, when the slave cameras 27 and 37 move to different positions as shown in FIG. 7, the slave cameras 27 and 37 simultaneously perform a related operation to automatically photograph the master camera 17. The photographing direction is changed so that the subject 41 can be photographed.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, and various modifications and variations may be made by those skilled in the art. It is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

1 is a block diagram illustrating a photographing system using multiple cameras according to an exemplary embodiment of the present invention.

2 and 3 are block diagrams illustrating the flow of information between a master camera and a slave camera that can be implemented in a photographing system using multiple cameras according to an exemplary embodiment of the present invention.

4 is a general flowchart of a photographing method using multiple cameras according to an exemplary embodiment of the present invention.

5, 6, and 7 are diagrams illustrating a rotation state of a camera to explain an operation of a photographing system using the multiple camera of FIG. 4.

<Brief Description of Drawings>

10 --- Camera Control Unit 11 --- Communication Unit

12 --- Operation control part 13 --- Electronic compass

14 --- Position Measuring Module 15 --- Distance Measuring Module

50 --- Control Center (Situation Room) 120 --- Network

Claims (11)

In a method of photographing a subject using two or more cameras, Selecting any one of the two or more cameras as a master camera; Extracting distance information to a subject photographed by the master camera; Extracting shooting direction information captured by the master camera; Extracting current position information of the master camera; Transmitting information extracted and processed by the master camera to each slave camera through a communication network; And Comprising the information received from the master camera through the communication network in each slave camera with the position information, shooting direction information of each slave camera to obtain the direction of the subject and changing the direction of each slave camera according to the direction Shooting method using a multiple camera, characterized in that. The method of claim 1, wherein the selecting of any one camera as a master camera further comprises selecting a multi-camera shooting mode to enable a multi-camera shooting function. The method of claim 1 or 2, wherein the selecting of any one camera as the master camera or the multi-camera shooting mode is performed by a user remotely through a communication network or directly by hardware or software of the camera body. Shooting method using a multi-camera, characterized in that performed via the enemy button. The method of claim 1, wherein in the step of transmitting the extracted information processed by the master camera to each slave camera through a communication network, the longitude and latitude values of the position of the subject based on the subject distance information, the photographing direction information, and the position information. And estimating and transmitting the estimated data to each slave camera through a communication network. The method of claim 1 or 4, wherein in the step of changing the direction of the slave camera, the longitude and latitude values of the subject are extracted from the received data, and these values are calculated by the operation controller to determine the position information and the photographing direction of the slave camera. And a direction of the subject is changed by extracting the direction of the subject by comparing with the information. The method of claim 1, wherein in the step of transmitting the extracted information processed by the master camera to each slave camera through a communication network, the data processed by binding the object distance information, the photographing direction information, and the location information together is processed through the communication network. Shooting method using a multiple camera, characterized in that the transmission to the camera. The method of claim 1, wherein, in the changing of the direction of the slave camera, the object distance information, the photographing direction information, and the position information are extracted from the received data, and calculated through the calculation control unit of the slave camera to obtain the hardness of the subject. And estimating a latitude value and comparing the position information and the shooting direction information of the slave camera to extract the direction of the subject to change the direction of the slave camera. In a system for photographing a subject using two or more cameras, Camera control unit is installed in each of the cameras, the camera control unit, An electronic compass capable of obtaining photographing direction information; Position measuring module for generating position information of the camera; A distance measuring module for measuring a distance to a subject; A communication unit for transmitting and receiving data generated by the camera controller through a communication network; And And a calculation control unit to change the direction of the camera by extracting the direction of the subject through the calculation. The photographing system of claim 8, wherein the communication network is configured by wire or wirelessly. The photographing system of claim 8, wherein the distance measuring module of the camera controller is configured using at least one of sound wave detection, stereovision, infrared beam, and laser beam. The photographing system of claim 8, wherein the position measuring module of the camera controller is configured using at least one of GPS and A-GPS.

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