WO2018010240A1 - 拍摄同步方法及同步装置 - Google Patents

拍摄同步方法及同步装置 Download PDF

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Publication number
WO2018010240A1
WO2018010240A1 PCT/CN2016/093969 CN2016093969W WO2018010240A1 WO 2018010240 A1 WO2018010240 A1 WO 2018010240A1 CN 2016093969 W CN2016093969 W CN 2016093969W WO 2018010240 A1 WO2018010240 A1 WO 2018010240A1
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WO
WIPO (PCT)
Prior art keywords
cameras
network
shooting
synchronous
photographing
Prior art date
Application number
PCT/CN2016/093969
Other languages
English (en)
French (fr)
Inventor
张煜
Original Assignee
深圳看到科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳看到科技有限公司 filed Critical 深圳看到科技有限公司
Priority to US16/478,581 priority Critical patent/US10951804B2/en
Publication of WO2018010240A1 publication Critical patent/WO2018010240A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/04Synchronising
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/617Upgrading or updating of programs or applications for camera control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/62Control of parameters via user interfaces
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/66Remote control of cameras or camera parts, e.g. by remote control devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/66Remote control of cameras or camera parts, e.g. by remote control devices
    • H04N23/661Transmitting camera control signals through networks, e.g. control via the Internet
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/667Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/698Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/90Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/24Systems for the transmission of television signals using pulse code modulation
    • H04N7/52Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H04N7/56Synchronising systems therefor

Definitions

  • the present invention relates to the field of multimedia content production, and in particular, to a shooting synchronization method and a synchronization device.
  • the current common multi-camera simultaneous shooting operation typically triggers image acquisition through digital signals on a dedicated I/O port on the camera.
  • each camera must be connected using an additional cable with a suitable plug. This not only makes the installation more complicated, it is very inconvenient to use, and the multi-camera system is more expensive to manufacture, and often requires a high-quality cable to complete the multi-camera synchronization operation.
  • the embodiment of the invention provides a shooting synchronization method and a synchronization device with low installation cost and convenient operation and corresponding multi-camera system, so as to solve the complicated installation and synchronization method of the prior art shooting synchronization method and synchronization method. Inconvenience and technical problems associated with higher production costs of the corresponding multi-camera system.
  • An embodiment of the present invention provides a shooting synchronization method for performing a synchronous shooting operation on a plurality of the cameras through any one of the plurality of camera systems, wherein the shooting synchronization method includes:
  • the synchronous shooting interrupt instruction is sent to all the cameras in the current synchronous network through the wireless network.
  • the photographing synchronization method further includes the step of synchronizing the frame sync shooting screen to other electronic device terminals.
  • all cameras in the current synchronization network are acquired by way of mDNS network broadcast; the synchronous shooting instructions are sent to the corresponding camera by using a D-bus communication mechanism.
  • the current synchronization network formed by all the cameras is a P2P network; and the wireless network includes, but is not limited to, at least one of a Zigbee wireless communication network, a Wifi wireless network, or a Bluetooth wireless network.
  • An embodiment of the present invention provides a shooting synchronization method for performing a synchronous shooting operation on a plurality of the cameras through any one of the plurality of camera systems, wherein the shooting synchronization method includes:
  • the synchronized shooting instructions are transmitted to the corresponding camera through the wireless network to achieve frame synchronous shooting of all cameras in the multi-camera system.
  • the step of acquiring a signal transmission delay between each of the cameras includes:
  • the signal transmission delay between the two cameras is determined according to the handshake connection time between the two cameras.
  • the step of acquiring a signal transmission delay between each of the cameras includes:
  • a signal transmission delay between the two cameras is determined according to an appearance time of the common feature points in the captured pictures of the two cameras.
  • the shooting synchronization method further includes:
  • the synchronous shooting interrupt instruction is sent to all the cameras in the current synchronous network through the wireless network.
  • the shooting synchronization method further includes:
  • the synchronous shooting feedback instruction of all the cameras in the current synchronization network is not received within the set time, it is determined whether the received camera corresponding to the synchronous shooting feedback instruction includes all the specific cameras;
  • the synchronous shooting interrupt instruction is sent to all the cameras in the current synchronous network through the wireless network.
  • the shooting synchronization method further includes the steps of:
  • all cameras in the current synchronization network are acquired by means of mDNS network broadcasting.
  • the synchronous photographing instruction is transmitted to a corresponding camera using a D-bus communication mechanism.
  • the current synchronization network formed by all the cameras is a P2P network.
  • the wireless network includes, but is not limited to, at least one of a Zigbee wireless communication network, a Wifi wireless network, or a Bluetooth wireless network.
  • An embodiment of the present invention further provides a shooting synchronization device, including:
  • a camera acquisition module configured to acquire all cameras in the current synchronization network by means of network broadcast;
  • a transmission delay acquisition module configured to acquire a signal transmission delay between each of the cameras
  • a shooting instruction generating module configured to generate a synchronous shooting instruction of each of the cameras according to a signal transmission delay between each of the cameras;
  • a shooting module configured to send the synchronous shooting instruction to a corresponding camera through a wireless network to implement frame synchronous shooting of all cameras in the multi-camera system.
  • all cameras in the current synchronization network are acquired by means of mDNS network broadcasting.
  • the synchronous photographing instruction is transmitted to a corresponding camera using a D-bus communication mechanism.
  • the current synchronization network formed by all the cameras is a P2P network.
  • the wireless network includes, but is not limited to, at least one of a Zigbee wireless communication network, a Wifi wireless network, or a Bluetooth wireless network.
  • the shooting synchronization method and the synchronization device of the present invention acquire all the cameras in the current synchronization network by means of network broadcasting, and perform frame synchronization shooting on all the cameras; the multi-camera is simplified.
  • the installation process and the use flow of the system reduce the production cost of the multi-camera system; the prior art shooting synchronization method and the synchronization method are complicated to install, the use is inconvenient, and the corresponding multi-camera system has a relatively high production cost. problem.
  • FIG. 1 is a flow chart of a first preferred embodiment of a photographing synchronization method of the present invention
  • FIG. 2 is a flow chart of a second preferred embodiment of the photographing synchronization method of the present invention.
  • FIG. 3 is a flow chart of a third preferred embodiment of the photographing synchronization method of the present invention.
  • FIG. 4 is a schematic structural view of a preferred embodiment of the photographing synchronization device of the present invention.
  • the photographing synchronization method of the present invention can be used to perform a synchronous photographing operation on a camera in a multi-camera system, and the photographing synchronization method can be used in photographing electronic devices composed of various multi-cameras.
  • the user can use the shooting synchronization method to perform simultaneous shooting operations on multiple cameras through the camera in the multi-camera system.
  • the camera in the entire multi-camera system does not need to use an extra cable connection, so the installation of the multi-camera system is simple. All cameras can be controlled by any camera in the multi-camera system, so the operation of the multi-camera system is convenient.
  • the production cost of the multi-camera system is also low.
  • FIG. 1 is a flowchart of a first preferred embodiment of a photographing synchronization method according to the present invention.
  • the photographing synchronization method of the preferred embodiment can be implemented by using the above-mentioned photographing electronic device.
  • the photographing synchronization method of the preferred embodiment includes:
  • Step S101 Acquire all cameras in the current synchronization network by means of network broadcast;
  • Step S102 acquiring a signal transmission delay between each camera
  • Step S103 generating a synchronous shooting instruction of each camera according to a signal transmission delay between each of the cameras;
  • Step S104 the synchronous shooting instruction is sent to the corresponding camera through the wireless network to realize frame synchronous shooting of all the cameras in the multi-camera system.
  • step S101 all the cameras are first set in the current synchronization network to perform frame synchronization shooting control for all cameras in the current synchronization network.
  • the current synchronization network is preferably a P2P peer-to-peer network, that is, there is no central node (central camera) in the entire current synchronization network, and the current synchronization network
  • Each of the cameras can issue a control signal or receive a control signal.
  • the shooting synchronization device acquires all the cameras in the current synchronization network by using any camera in the current synchronization network to broadcast through the network, that is, discovers and resolves the network addresses of all the cameras in the current synchronization network.
  • mDNS multicast DNS
  • step S102 the photographing synchronization device acquires the signal transmission delay between all the cameras in the current synchronization network analyzed in step S101. Since each camera in the current synchronization network can send a control signal, it can also receive the control signal; therefore, in this step, the signal transmission delay between the two cameras of all the cameras in the current synchronization network is acquired, so that the frame synchronization shooting can be performed subsequently. Then it proceeds to step S103.
  • step S103 the shooting synchronization device generates a synchronous shooting instruction corresponding to each camera according to the signal transmission delay between the cameras acquired in step S102, and the synchronous shooting instruction can be directly sent to the corresponding camera, or can be directly passed through The camera is forwarded to the corresponding camera.
  • the D-bus communication mechanism is preferably used to transmit the synchronous shooting instruction to the corresponding camera to simplify the above-mentioned synchronous shooting instruction communication process. Then it proceeds to step S104.
  • the photographing synchronization device transmits the synchronous photographing instruction acquired in step S103 directly or indirectly to the corresponding camera through the wireless network. Since the synchronous shooting instruction includes a corresponding signal transmission delay, each camera can realize frame synchronous shooting by the synchronous shooting instruction.
  • the wireless network herein includes, but is not limited to, at least one of a Zigbee wireless communication network, a Wifi wireless network, or a Bluetooth wireless network.
  • the last shooting synchronization device can synchronize the above-mentioned frame synchronization shooting picture to other electronic device terminals, such as viewing the client terminal device, so that the user can view the synchronous shooting picture in real time.
  • the shooting synchronization method of the preferred embodiment acquires all the cameras in the current synchronization network by means of network broadcasting, and performs frame synchronization shooting on all the cameras; simplifies the installation process and usage flow of the multi-camera system, and reduces the production of the multi-camera system. cost.
  • FIG. 2 is a flowchart of a first preferred embodiment of the photographing synchronization method of the present invention.
  • the photographing synchronization method of the preferred embodiment can be implemented by using the above-mentioned photographing electronic device.
  • the photographing synchronization method of the preferred embodiment includes:
  • Step S201 Acquire all cameras in the current synchronization network by means of network broadcast;
  • Step S202 acquiring a signal transmission delay between each camera
  • Step S203 generating a synchronous shooting instruction of each camera according to a signal transmission delay between each of the cameras;
  • Step S204 sending a synchronous shooting instruction to the corresponding camera through the wireless network
  • Step S205 determining whether a synchronous shooting feedback instruction of all the cameras in the current synchronization network is received, the synchronous shooting feedback command is generated by the camera according to the synchronous shooting instruction; if the synchronous shooting of all the cameras in the current synchronous network is not received within the set time If the feedback instruction is sent to step S206; if the synchronous shooting feedback command of all the cameras in the current synchronous network is received within the set time, then the process goes to step S207.
  • Step S206 sending a synchronous shooting interrupt instruction to all cameras in the current synchronous network through the wireless network.
  • Step S207 receiving a frame synchronous shooting picture captured by each camera, and synchronizing the frame synchronous shooting picture to other electronic device terminals.
  • Step S201 is the same as or similar to the description in step S101 of the first preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S101 of the first preferred embodiment of the photographing synchronization method.
  • step S202 the shooting synchronization device acquires the signal transmission delay between all the cameras in the current synchronization network analyzed in step S201. Since each camera in the current synchronization network can send a control signal, it can also receive the control signal; therefore, in this step, the signal transmission delay between the two cameras of all the cameras in the current synchronization network is acquired, so that the frame synchronization shooting can be performed subsequently.
  • the signal transmission delay between each camera can be obtained by the following steps:
  • Step S2021A establishing at least one handshake connection between the two cameras
  • step S2022A according to the handshake connection time of the handshake connection established in step S2021A, the signal transmission delay between the two cameras is determined.
  • the connection determines the signal transmission delay between the two cameras by the average of the multiple handshake connection times.
  • Step S2021B Acquire common feature points of the common areas of the two cameras, where the common feature points may be an easily identifiable pixel point, such as a red marker point gradually appearing in the white background picture.
  • Step S2022B according to the difference of the appearance time of the common feature points acquired in step S2021B in the shooting pictures of the two cameras, such as the time when the red mark point appears in the camera A is 10 ms, and the time when the camera B appears is 12 ms, then It can be determined that the signal transmission delay between camera A and camera B is 2 ms. Of course, it is possible to determine the signal transmission delay between the two cameras by setting a plurality of common feature points to avoid the detection error of a single detection. Then it proceeds to step S203.
  • Step S203 is the same as or similar to the description in step S103 of the first preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S103 of the first preferred embodiment of the photographing synchronization method.
  • Step S204 is the same as or similar to the description in step S104 of the first preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S104 of the first preferred embodiment of the photographing synchronization method.
  • step S205 the shooting synchronization device determines whether a synchronous shooting feedback command of all the cameras in the current synchronization network is received, the synchronous shooting feedback command is generated by the camera according to the synchronous shooting instruction; and is used to prove that the corresponding camera has received the corresponding synchronous shooting instruction. If the synchronous shooting feedback command of all the cameras in the current synchronous network is not received within the set time, then go to step S206; if the synchronous shooting feedback command of all the cameras in the current synchronous network is received within the set time, then go to Step S207.
  • step S206 if the shooting synchronization device does not receive the synchronous shooting feedback command of all the cameras in the current synchronization network within the set time, it indicates that at least some of the cameras do not receive the corresponding synchronous shooting instruction, and the shooting synchronization device passes the wireless network.
  • the synchronous shooting terminal command is sent to all the cameras in the current synchronous network to stop the frame synchronous shooting of all the cameras of the multi-camera system, and the technician performs a shooting operation after checking the camera that has not issued the synchronous shooting feedback command.
  • step S207 if the shooting synchronization device receives the synchronous shooting feedback command of all the cameras in the current synchronization network within the set time, it indicates that all the cameras have prepared the frame synchronization shooting, so that all the cameras of the multi-camera system
  • the frame synchronization shooting is performed, and then the shooting synchronization device receives the frame synchronization shooting pictures captured by the respective cameras, and synchronizes the frame synchronous shooting pictures to other electronic device terminals, such as viewing the client terminal device, so that the user can view the synchronous shooting pictures in real time.
  • the shooting synchronization method of the preferred embodiment can determine whether to perform frame synchronization shooting according to the synchronous shooting feedback instruction of the camera, thereby further improving the success rate of the multi-camera system for frame synchronous shooting.
  • FIG. 3 is a flowchart of a second preferred embodiment of the photographing synchronization method of the present invention.
  • the photographing synchronization method of the preferred embodiment can be implemented by using the above-mentioned photographing electronic device.
  • the photographing synchronization method of the preferred embodiment includes:
  • Step S301 Acquire all cameras in the current synchronization network by means of network broadcast;
  • Step S302 acquiring a signal transmission delay between each camera
  • Step S303 generating a synchronous shooting instruction of each camera according to a signal transmission delay between each of the cameras;
  • Step S304 sending a synchronous shooting instruction to the corresponding camera through the wireless network
  • Step S305 determining whether a synchronous shooting feedback instruction of all the cameras in the current synchronous network is received, the synchronous shooting feedback command is generated by the camera according to the synchronous shooting instruction; if the synchronous shooting of all the cameras in the current synchronous network is not received within the set time If the feedback instruction is sent to step S306; if the synchronous shooting feedback command of all the cameras in the current synchronous network is received within the set time, then go to step S308.
  • step S306 it is determined whether the camera corresponding to the received synchronous shooting feedback command includes all the specific cameras; if all the specific cameras are not included, then go to step S307; if all the specific cameras are included, go to step S308.
  • Step S307 If the camera corresponding to the received synchronous shooting feedback instruction does not include all the specific cameras, the synchronous shooting interrupt instruction is sent to all the cameras in the current synchronization network through the wireless network.
  • Step S308 if the camera corresponding to the synchronous shooting feedback command of all the cameras in the current synchronization network or the received synchronous shooting feedback command includes all the specific cameras, the frame synchronization shooting pictures captured by the respective cameras are received, and Synchronize the frame sync shooting screen to other electronic device terminals.
  • Step S301 is the same as or similar to the description in step S201 of the second preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S201 of the second preferred embodiment of the photographing synchronization method.
  • Step S302 is the same as or similar to the description in step S202 of the second preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S202 of the second preferred embodiment of the above-described photographing synchronization method.
  • Step S303 is the same as or similar to the description in step S203 of the second preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S203 of the second preferred embodiment of the photographing synchronization method.
  • Step S304 is the same as or similar to the description in step S204 of the second preferred embodiment of the above-described photographing synchronization method. For details, refer to the related description in step S204 of the second preferred embodiment of the above-described photographing synchronization method.
  • step S305 the shooting synchronization device determines whether a synchronous shooting feedback command of all the cameras in the current synchronization network is received, the synchronous shooting feedback command is generated by the camera according to the synchronous shooting instruction; and is used to prove that the corresponding camera has received the corresponding synchronous shooting instruction. If the synchronous shooting feedback command of all the cameras in the current synchronous network is not received within the set time, go to step S306; if the synchronous shooting feedback command of all the cameras in the current synchronous network is received within the set time, go to Step S308.
  • the photographing synchronization device determines whether the camera corresponding to the received synchronous shooting feedback command includes all the specific cameras;
  • the specific camera here refers to the necessary camera for performing frame synchronous shooting, that is, the multi-camera system can set a plurality of necessary cameras and A plurality of non-essential cameras, wherein the necessary cameras are cameras for performing frame synchronization shooting on the panoramic picture, such as a camera in front of the camera and an important angle camera;
  • the non-essential camera is a camera that captures secondary content, such as a camera on the back, etc.
  • the shooting content of the unnecessary camera does not substantially affect the frame sync shooting screen, such as the sharpness of the captured image may be reduced.
  • Step S307 If the shooting synchronization device determines that the camera corresponding to the received synchronous shooting feedback command does not include all the specific cameras, then go to step S307; if the shooting synchronization device determines that the corresponding camera corresponding to the synchronous shooting feedback command includes all the specific cameras, then go to Step S308.
  • step S307 if the camera synchronization device determines that the camera corresponding to the received synchronous shooting feedback command does not include all the specific cameras, it indicates that at least part of the specific camera does not receive the corresponding synchronous shooting command, and the shooting synchronization device passes through the wireless network.
  • the synchronous shooting terminal command is sent to all the cameras in the current synchronous network to stop the frame synchronous shooting of all the cameras of the multi-camera system, and the technician performs a shooting operation after checking the camera that has not issued the synchronous shooting feedback command.
  • step S308 if the shooting synchronization device receives the synchronous shooting feedback command of all the cameras in the current synchronization network within the set time, or the shooting synchronization device determines that the corresponding camera corresponding to the synchronous shooting feedback command includes all the specific cameras, then Explain that at least all the specific cameras have prepared the frame synchronization shooting, so that all the cameras of the multi-camera system perform frame synchronous shooting, and then the shooting synchronization device receives the frame synchronous shooting pictures taken by the respective cameras, and synchronizes the frame synchronous shooting pictures to Other electronic device terminals, such as viewing client terminal devices, allow the user to view the synchronized shooting pictures in real time.
  • Other electronic device terminals such as viewing client terminal devices
  • the photographing synchronization method of the preferred embodiment can determine whether to perform frame synchronous photographing by judging the synchronous photographing feedback command of a specific camera, based on the second preferred embodiment.
  • the success rate of the multi-camera system for frame synchronous shooting is further improved.
  • FIG. 4 is a schematic structural view of a preferred embodiment of the photographing synchronization device of the present invention.
  • the photographing synchronization device of the preferred embodiment can be implemented using the first preferred embodiment of the above-described photographing synchronization method, which includes a camera acquisition module 41, a transmission delay acquisition module 42, a photographing instruction generation module 43, and a photographing module. 44.
  • the camera acquisition module 41 is configured to acquire all the cameras in the current synchronization network by means of network broadcast;
  • the transmission delay acquisition module 42 is configured to acquire a signal transmission delay between the cameras;
  • the shooting instruction generation module 43 is configured to use the cameras according to the cameras.
  • the signal transmission delay is generated to generate a synchronous shooting instruction of each camera;
  • the shooting module 44 is configured to send the synchronous shooting instruction to the corresponding camera through the wireless network to realize frame synchronous shooting of all the cameras in the multi-camera system.
  • the shooting synchronization device 40 of the preferred embodiment When the shooting synchronization device 40 of the preferred embodiment is used, all of the cameras are first set in the current synchronization network to perform frame synchronization shooting control for all cameras in the current synchronization network.
  • the current synchronization network is preferably a P2P peer-to-peer network, that is, there is no central node (central camera) in the entire current synchronization network, and the current synchronization network
  • Each of the cameras can issue a control signal or receive a control signal.
  • the camera acquisition module 41 acquires all the cameras in the current synchronization network by using any camera in the current synchronization network, that is, discovers and parses the network addresses of all the cameras in the current synchronization network.
  • mDNS multicast DNS
  • the transmission delay acquisition module 42 then obtains the signal transmission delay between all the cameras in the current synchronization network analyzed by the camera acquisition module 41. Since each camera in the current synchronization network can send a control signal, the control signal can also be received; therefore, the transmission delay acquisition module 42 acquires the signal transmission delay between two cameras of all the cameras in the current synchronization network, so as to perform subsequent frame synchronization. Shooting.
  • the shooting instruction generating module 43 generates a synchronous shooting instruction corresponding to each camera according to the signal transmission delay between the cameras acquired by the transmission delay obtaining module 42, and the synchronous shooting instruction can be directly sent to the corresponding camera, or Forward to the corresponding camera via other cameras.
  • the D-bus communication mechanism is preferably used to transmit the synchronous shooting instruction to the corresponding camera to simplify the above-mentioned synchronous shooting instruction communication process.
  • the last shooting module 44 sends the synchronous shooting instruction acquired by the shooting instruction generating module 43 directly or indirectly to the corresponding camera through the wireless network. Since the synchronous shooting instruction includes a corresponding signal transmission delay, each camera can realize frame synchronous shooting by the synchronous shooting instruction.
  • the wireless network herein includes, but is not limited to, at least one of a Zigbee wireless communication network, a Wifi wireless network, or a Bluetooth wireless network.
  • the last shooting synchronization device 40 can synchronize the above-mentioned frame synchronization shooting screen to other electronic device terminals, such as viewing the client terminal device, so that the user can view the synchronized shooting pictures in real time.
  • the shooting synchronization method and the synchronization device of the invention acquire all the cameras in the current synchronization network by means of network broadcasting, and perform frame synchronization shooting on all the cameras; simplify the installation process and usage flow of the multi-camera system, and reduce the multi-camera system.
  • the manufacturing cost solves the technical problem that the shooting synchronization method and the synchronization method of the prior art are complicated to install, the use is inconvenient, and the corresponding multi-camera system has high production cost.

Abstract

本发明提供一种拍摄同步方法,用于通过多摄像头系统中的任一摄像头对多个摄像头进行同步拍摄操作,其包括:通过网络广播的方式获取当前同步网络中的所有摄像头;获取各个所述摄像头之间的信号传输延时;根据各个所述摄像头之间的信号传输延时,生成每个摄像头的同步拍摄指令;以及将同步拍摄指令通过无线网络发送至相应的摄像头。

Description

拍摄同步方法及同步装置
本申请要求于2016年07月11日提交中国专利局、申请号为201610542160.8、发明名称为“拍摄同步方法及同步装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及多媒体内容制作领域,特别是涉及一种拍摄同步方法及同步装置。
背景技术
随着科技的发展,计算机视觉得到更加普遍的运用,为了达到较好的计算机视觉效果,在画面采集时,需要使用多个相机同步进行图像捕捉。例如目前流行的具有多摄像头系统的全景相机、VR相机以及光场相机,都牵涉到多摄像头协同,如用多机位拍摄物体的三维建模、多角度拍摄进行体育和运动分析、或工业机器人的视觉质检系统。
目前常见的多摄像头同步拍摄操作通常通过相机上的专用I/O端口的数字信号触发图像采集。采用这种设置时,每个相机必须使用配备合适插头的额外电缆连接。这样不仅安装更加复杂,使用非常不便,而且多摄像头系统的制作成本更高,而且很多时候都需要高质量电缆才能完成多摄像头的同步操作。
故,有必要提供一种拍摄同步方法及同步装置,以解决现有技术所存在的问题。
技术问题
本发明实施例提供一种安装简单、操作方便且对应的多摄像头系统的制作成本较低的拍摄同步方法及同步装置,以解决现有技术的拍摄同步方法及同步方法的安装较为复杂、使用较为不便以及对应的多摄像头系统的制作成本较高的技术问题。
技术解决方案
本发明实施例提供一种拍摄同步方法,用于通过多摄像头系统中的任一摄像头对多个所述摄像头进行同步拍摄操作,其中所述拍摄同步方法包括:
通过网络广播的方式获取当前同步网络中的所有摄像头;
获取两个所述摄像头的拍摄公共区域的公共特征点;
根据所述公共特征点在两个所述摄像头的拍摄画面中的出现时间,确定两个所述摄像头之间的信号传输延时;
根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;
将所述同步拍摄指令通过无线网络发送至相应的摄像头;
判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则判断接收到的所述同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;以及
如接收到的所述同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则通过无线网络向所述当前同步网络中的所有摄像头发送同步拍摄中断指令。
在本发明所述的拍摄同步方法中,所述拍摄同步方法还包括步骤:将帧同步拍摄画面同步到其他电子设备终端。
在本发明所述的拍摄同步方法中,通过mDNS网络广播的方式获取当前同步网络中的所有摄像头;采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
在本发明所述的拍摄同步方法中,所有所述摄像头构成的所述当前同步网络为P2P网络;所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
本发明实施例提供一种拍摄同步方法,用于通过多摄像头系统中的任一摄像头对多个所述摄像头进行同步拍摄操作,其中所述拍摄同步方法包括:
通过网络广播的方式获取当前同步网络中的所有摄像头;
获取各个所述摄像头之间的信号传输延时;
根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;以及
将所述同步拍摄指令通过无线网络发送至相应的摄像头,以实现所述多摄像头系统中的所有摄像头的帧同步拍摄。
在本发明所述的拍摄同步方法中,所述获取各个所述摄像头之间的信号传输延时的步骤包括:
建立两个所述摄像头之间的至少一次握手连接;
根据两个所述摄像头之间的握手连接时间,确定两个所述摄像头之间的信号传输延时。
在本发明所述的拍摄同步方法中,所述获取各个所述摄像头之间的信号传输延时的步骤包括:
获取两个所述摄像头的拍摄公共区域的公共特征点;
根据所述公共特征点在两个所述摄像头的拍摄画面中的出现时间,确定两个所述摄像头之间的信号传输延时。
在本发明所述的拍摄同步方法中,所述拍摄同步方法还包括:
判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则通过无线网络向所述当前同步网络中所有摄像头发送同步拍摄中断指令。
在本发明所述的拍摄同步方法中,所述拍摄同步方法还包括:
判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则判断接收到的所述同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;
如接收到的所述同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则通过无线网络向所述当前同步网络中的所有摄像头发送同步拍摄中断指令。
在本发明所述的拍摄同步方法中,所述拍摄同步方法还包括步骤:
将帧同步拍摄画面同步到其他电子设备终端。
在本发明所述的拍摄同步方法中,通过mDNS网络广播的方式获取当前同步网络中的所有摄像头。
在本发明所述的拍摄同步方法中,采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
在本发明所述的拍摄同步方法中,所有所述摄像头构成的所述当前同步网络为P2P网络。
在本发明所述的拍摄同步方法中,所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
本发明实施例还提供一种拍摄同步装置,其包括:
摄像头获取模块,用于通过网络广播的方式获取当前同步网络中的所有摄像头;
传输延时获取模块,用于获取各个所述摄像头之间的信号传输延时;
拍摄指令生成模块,用于根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;以及
拍摄模块,用于将将所述同步拍摄指令通过无线网络发送至相应的摄像头,以实现所述多摄像头系统中的所有摄像头的帧同步拍摄。
在本发明所述的拍摄同步装置中,通过mDNS网络广播的方式获取当前同步网络中的所有摄像头。
在本发明所述的拍摄同步装置中,采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
在本发明所述的拍摄同步装置中,所有所述摄像头构成的所述当前同步网络为P2P网络。
在本发明所述的拍摄同步装置中,所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
有益效果
相较于现有技术的拍摄同步方法及同步装置,本发明的拍摄同步方法及同步装置通过网络广播的方式获取当前同步网络中的所有摄像头,并对所有摄像头进行帧同步拍摄;简化了多摄像头系统的安装流程以及使用流程,降低了多摄像头系统的制作成本;解决了现有技术的拍摄同步方法及同步方法的安装较为复杂、使用较为不便以及对应的多摄像头系统的制作成本较高的技术问题。
附图说明
下面根据附图和实施例对本发明作进一步详细说明。
图1为本发明的拍摄同步方法的第一优选实施例的流程图;
图2为本发明的拍摄同步方法的第二优选实施例的流程图;
图3为本发明的拍摄同步方法的第三优选实施例的流程图;
图4为本发明的拍摄同步装置的优选实施例的结构示意图。
本发明的最佳实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明的拍摄同步方法可用于对多摄像头系统中的摄像头进行同步拍摄操作,该拍摄同步方法可用于各种多摄像头组成的拍摄电子设备中。用户使用该拍摄同步方法可通过多摄像头系统中的摄像头对多个摄像头进行同步拍摄操作,整个多摄像头系统中的摄像头不需要使用额外电缆连接,因此多摄像头系统的安装简单。可通过多摄像头系统中的任一摄像头对所有摄像头进行控制,因此多摄像头系统的操作方便。此外由于硬件的简化,该多摄像头系统的制作成本也较低。
请参照图1,图1为本发明的拍摄同步方法的第一优选实施例的流程图。本优选实施例的拍摄同步方法可使用上述的拍摄电子设备进行实施,本优选实施例的拍摄同步方法包括:
步骤S101,通过网络广播的方式获取当前同步网络中的所有摄像头;
步骤S102,获取各个摄像头之间的信号传输延时;
步骤S103,根据各个所述摄像头之间的信号传输延时,生成每个摄像头的同步拍摄指令;
步骤S104,将同步拍摄指令通过无线网络发送至相应的摄像头,以实现多摄像头系统中的所有摄像头的帧同步拍摄。
下面详细说明本优选实施例的拍摄同步方法的各步骤的具体流程。
在步骤S101中,首先将所有的摄像头设置在当前同步网络中,以便对当前同步网络中的所有摄像头进行帧同步拍摄控制。这里为了使得用户可通过任一摄像头对当前同步网络中的所有其他摄像头进行控制,该当前同步网络优选为P2P对等网络,即整个当前同步网络中不存在中心节点(中心摄像头),当前同步网络中的每个摄像头均可发出控制信号或接收控制信号。
随后拍摄同步装置使用当前同步网络中的任一摄像头通过网络广播的方式,获取当前同步网络中的所有摄像头,即发现以及解析当前同步网络中的所有摄像头的网路地址。这里优选采用mDNS(组播DNS)的网络广播方式获取当前同步网络中的所有摄像头,这样可以不用设置专门的DNS服务器,进一步降低相应的拍摄电子设备的制作成本。随后转到步骤S102。
在步骤S102中,拍摄同步装置获取步骤S101解析的当前同步网络中所有摄像头之间的信号传输延时。由于当前同步网络中每个摄像头即可发出控制信号,也可接收控制信号;因此在本步骤中获取当前同步网络中所有摄像头的两两之间的信号传输延时,以便后续进行帧同步拍摄。随后转到步骤S103。
在步骤S103中,拍摄同步装置根据步骤S102获取的各个摄像头之间的信号传输延时,生成每个摄像头对应的同步拍摄指令,该同步拍摄指令可直接发送至相应的摄像头上,也可通过其他摄像头转发至相应的摄像头上。这里优选采用D-bus通信机制将同步拍摄指令发送至相应的摄像头上,以简化上述同步拍摄指令通信过程。随后转到步骤S104。
在步骤S104中,拍摄同步装置将步骤S103获取的同步拍摄指令通过无线网络直接或间接的发送至相应的摄像头。由于该同步拍摄指令包括相应的信号传输延时,因此各个摄像头可通过该同步拍摄指令实现帧同步拍摄。这里的无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
最后拍摄同步装置可将上述帧同步拍摄画面同步到其他电子设备终端,如观察客户终端设备上,以便用户对同步拍摄画面进行实时观看。
这样即完成了本优选实施例的拍摄同步方法的同步拍摄画面的拍摄过程。
本优选实施例的拍摄同步方法通过网络广播的方式获取当前同步网络中的所有摄像头,并对所有摄像头进行帧同步拍摄;简化了多摄像头系统的安装流程以及使用流程,降低了多摄像头系统的制作成本。
请参照图2,图2为本发明的拍摄同步方法的第一优选实施例的流程图。本优选实施例的拍摄同步方法可使用上述的拍摄电子设备进行实施,本优选实施例的拍摄同步方法包括:
步骤S201,通过网络广播的方式获取当前同步网络中的所有摄像头;
步骤S202,获取各个摄像头之间的信号传输延时;
步骤S203,根据各个所述摄像头之间的信号传输延时,生成每个摄像头的同步拍摄指令;
步骤S204,将同步拍摄指令通过无线网络发送至相应的摄像头;
步骤S205,判断是否接收到当前同步网络中所有摄像头的同步拍摄反馈指令,该同步拍摄反馈指令由摄像头根据同步拍摄指令生成;如在设定时间内未接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S206;如在设定时间内接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S207。
步骤S206,通过无线网络向当前同步网络中所有摄像头发送同步拍摄中断指令。
步骤S207,接收各个摄像头拍摄的帧同步拍摄画面,并将该帧同步拍摄画面同步到其他电子设备终端。
下面详细说明本优选实施例的拍摄同步方法的各步骤的具体流程。
步骤S201与上述的拍摄同步方法的第一优选实施例的步骤S101中的描述相同或相似,具体请参见上述拍摄同步方法的第一优选实施例的步骤S101中的相关描述。
在步骤S202中,拍摄同步装置获取步骤S201解析的当前同步网络中所有摄像头之间的信号传输延时。由于当前同步网络中每个摄像头即可发出控制信号,也可接收控制信号;因此在本步骤中获取当前同步网络中所有摄像头的两两之间的信号传输延时,以便后续进行帧同步拍摄。
具体的,可通过以下步骤获取各个摄像头之间的信号传输延时:
步骤S2021A,建立两个摄像头之间的至少一次握手连接;
步骤S2022A,根据步骤S2021A建立的握手连接的握手连接时间,确定两个摄像头之间的信号传输延时,这里为了避免单次握手连接时间的检测误差,可以建立两个摄像头之间的多次握手连接,通过多次握手连接时间的平均值,来确定两个摄像头之间的信号传输延时。
此外,还可通过以下步骤来获取各个摄像头之间的信号传输延时:
步骤S2021B,获取两个摄像头的拍摄公共区域的公共特征点,这里的公共特征点可为一容易辨认的像素点,如在白底画面里面逐渐出现的一个红色标记点等。
步骤S2022B,根据步骤S2021B中获取的公共特征点在两个摄像头的拍摄画面中的出现时间的差异,如该红色标记点在摄像头A出现的时间为10ms,在摄像头B出现的时间为12ms,则可确定摄像头A和摄像头B之间的信号传输延时为2ms。当然这里可以通过设置多个公共特征点来确定两个摄像头之间的信号传输延时,以避免单次检测的检测误差。随后转到步骤S203。
步骤S203与上述的拍摄同步方法的第一优选实施例的步骤S103中的描述相同或相似,具体请参见上述拍摄同步方法的第一优选实施例的步骤S103中的相关描述。
步骤S204与上述的拍摄同步方法的第一优选实施例的步骤S104中的描述相同或相似,具体请参见上述拍摄同步方法的第一优选实施例的步骤S104中的相关描述。
在步骤S205中,拍摄同步装置判断是否接收到当前同步网络中所有摄像头的同步拍摄反馈指令,该同步拍摄反馈指令由摄像头根据同步拍摄指令生成;用于证明相应的摄像头已经接收到对应的同步拍摄指令。如在设定时间内未接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S206;如在设定时间内接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S207。
在步骤S206中,如拍摄同步装置在设定时间内未接收到当前同步网络中的所有摄像头的同步拍摄反馈指令,则说明至少部分摄像头没有接收对应的同步拍摄指令,则拍摄同步装置通过无线网络向当前同步网络中所有摄像头发送同步拍摄终端指令,以停止进行多摄像头系统的所有摄像头的帧同步拍摄,待技术人员对未发出同步拍摄反馈指令的摄像头进行检查后再进行拍摄操作。
在步骤S207中,如拍摄同步装置在设定时间内接收到当前同步网络中的所有摄像头的同步拍摄反馈指令,则说明所有的摄像头已经做好的帧同步拍摄准备,这样多摄像头系统的所有摄像头进行帧同步拍摄,随后拍摄同步装置接收各个摄像头拍摄的帧同步拍摄画面,并将该帧同步拍摄画面同步到其他电子设备终端,如观察客户终端设备上,以便用户对同步拍摄画面进行实时观看。
这样即完成了本优选实施例的拍摄同步方法的同步拍摄画面的拍摄过程。
在第一优选实施例的基础上,本优选实施例的拍摄同步方法可根据摄像头的同步拍摄反馈指令确定是否进行帧同步拍摄,进一步提高了多摄像头系统进行帧同步拍摄的成功率。
请参照图3,图3为本发明的拍摄同步方法的第二优选实施例的流程图。本优选实施例的拍摄同步方法可使用上述的拍摄电子设备进行实施,本优选实施例的拍摄同步方法包括:
步骤S301,通过网络广播的方式获取当前同步网络中的所有摄像头;
步骤S302,获取各个摄像头之间的信号传输延时;
步骤S303,根据各个所述摄像头之间的信号传输延时,生成每个摄像头的同步拍摄指令;
步骤S304,将同步拍摄指令通过无线网络发送至相应的摄像头;
步骤S305,判断是否接收到当前同步网络中所有摄像头的同步拍摄反馈指令,该同步拍摄反馈指令由摄像头根据同步拍摄指令生成;如在设定时间内未接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S306;如在设定时间内接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S308。
步骤S306,判断接收到的同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;如未包括所有特定摄像头,则转到步骤S307;如包括所有特定摄像头,则转到步骤S308。
步骤S307,如接收到的同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则通过无线网络向当前同步网络中的所有摄像头发送同步拍摄中断指令。
步骤S308,如在设定时间内接收到当前同步网络中所有摄像头的同步拍摄反馈指令或接收到的同步拍摄反馈指令对应的摄像头包括所有特定摄像头,则接收各个摄像头拍摄的帧同步拍摄画面,并将该帧同步拍摄画面同步到其他电子设备终端。
下面详细说明本优选实施例的拍摄同步方法的各步骤的具体流程。
步骤S301与上述的拍摄同步方法的第二优选实施例的步骤S201中的描述相同或相似,具体请参见上述拍摄同步方法的第二优选实施例的步骤S201中的相关描述。
步骤S302与上述的拍摄同步方法的第二优选实施例的步骤S202中的描述相同或相似,具体请参见上述拍摄同步方法的第二优选实施例的步骤S202中的相关描述。
步骤S303与上述的拍摄同步方法的第二优选实施例的步骤S203中的描述相同或相似,具体请参见上述拍摄同步方法的第二优选实施例的步骤S203中的相关描述。
步骤S304与上述的拍摄同步方法的第二优选实施例的步骤S204中的描述相同或相似,具体请参见上述拍摄同步方法的第二优选实施例的步骤S204中的相关描述。
在步骤S305中,拍摄同步装置判断是否接收到当前同步网络中所有摄像头的同步拍摄反馈指令,该同步拍摄反馈指令由摄像头根据同步拍摄指令生成;用于证明相应的摄像头已经接收到对应的同步拍摄指令。如在设定时间内未接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S306;如在设定时间内接收到当前同步网络中所有摄像头的同步拍摄反馈指令,则转到步骤S308。
在步骤S306中,拍摄同步装置判断接收到的同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;这里的特定摄像头是指进行帧同步拍摄的必要摄像头,即多摄像头系统可设置多个必要摄像头以及多个非必要摄像头,其中必要摄像头为完成全景画面进行帧同步拍摄的摄像头,如正前方的摄像头以及重要角度的摄像头等;非必要摄像头为拍摄次要内容的摄像头,如背面的摄像头等,这些非必要摄像头的拍摄内容不会对帧同步拍摄画面进行实质性的影响,如可能导致拍摄画面的清晰度下降等。如拍摄同步装置判断接收到的同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则转到步骤S307;如拍摄同步装置判断接收到的同步拍摄反馈指令对应的摄像头包括所有特定摄像头,则转到步骤S308。
在步骤S307中,如拍摄同步装置摄同步装置判断接收到的同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则说明至少部分特定摄像头没有接收对应的同步拍摄指令,则拍摄同步装置通过无线网络向当前同步网络中所有摄像头发送同步拍摄终端指令,以停止进行多摄像头系统的所有摄像头的帧同步拍摄,待技术人员对未发出同步拍摄反馈指令的摄像头进行检查后再进行拍摄操作。
在步骤S308中,如拍摄同步装置在设定时间内接收到当前同步网络中的所有摄像头的同步拍摄反馈指令,或拍摄同步装置判断接收到的同步拍摄反馈指令对应的摄像头包括所有特定摄像头,则说明至少所有的特定摄像头已经做好的帧同步拍摄准备,这样多摄像头系统的所有摄像头进行帧同步拍摄,随后拍摄同步装置接收各个摄像头拍摄的帧同步拍摄画面,并将该帧同步拍摄画面同步到其他电子设备终端,如观察客户终端设备上,以便用户对同步拍摄画面进行实时观看。
这样即完成了本优选实施例的拍摄同步方法的同步拍摄画面的拍摄过程。
在第二优选实施例的基础上,本优选实施例的拍摄同步方法可通过对特定摄像头的同步拍摄反馈指令的判断,确定是否进行帧同步拍摄,在第二优选实施例的基础上。进一步提高了多摄像头系统进行帧同步拍摄的成功率。
本发明还提供一种拍摄同步装置,请参照图4,图4为本发明的拍摄同步装置的优选实施例的结构示意图。本优选实施例的拍摄同步装置可使用上述的拍摄同步方法的第一优选实施例进行实施,该拍摄同步装置40包括摄像头获取模块41、传输延时获取模块42、拍摄指令生成模块43以及拍摄模块44。
摄像头获取模块41用于通过网络广播的方式获取当前同步网络中的所有摄像头;传输延时获取模块42用于获取各个摄像头之间的信号传输延时;拍摄指令生成模块43用于根据各个摄像头之间的信号传输延时,生成每个摄像头的同步拍摄指令;拍摄模块44用于将将同步拍摄指令通过无线网络发送至相应的摄像头,以实现多摄像头系统中的所有摄像头的帧同步拍摄。
本优选实施例的拍摄同步装置40使用时,首先将所有的摄像头设置在当前同步网络中,以便对当前同步网络中的所有摄像头进行帧同步拍摄控制。这里为了使得用户可通过任一摄像头对当前同步网络中的所有其他摄像头进行控制,该当前同步网络优选为P2P对等网络,即整个当前同步网络中不存在中心节点(中心摄像头),当前同步网络中的每个摄像头均可发出控制信号或接收控制信号。
随后摄像头获取模块41使用当前同步网络中的任一摄像头通过网络广播的方式,获取当前同步网络中的所有摄像头,即发现以及解析当前同步网络中的所有摄像头的网路地址。这里优选采用mDNS(组播DNS)的网络广播方式获取当前同步网络中的所有摄像头,这样可以不用设置专门的DNS服务器,进一步降低相应的拍摄电子设备的制作成本。
然后传输延时获取模块42获取摄像头获取模块41解析的当前同步网络中所有摄像头之间的信号传输延时。由于当前同步网络中每个摄像头即可发出控制信号,也可接收控制信号;因此传输延时获取模块42获取当前同步网络中所有摄像头的两两之间的信号传输延时,以便后续进行帧同步拍摄。
随后拍摄指令生成模块43根据传输延时获取模块42获取的各个摄像头之间的信号传输延时,生成每个摄像头对应的同步拍摄指令,该同步拍摄指令可直接发送至相应的摄像头上,也可通过其他摄像头转发至相应的摄像头上。这里优选采用D-bus通信机制将同步拍摄指令发送至相应的摄像头上,以简化上述同步拍摄指令通信过程。
最后拍摄模块44将拍摄指令生成模块43获取的同步拍摄指令通过无线网络直接或间接的发送至相应的摄像头。由于该同步拍摄指令包括相应的信号传输延时,因此各个摄像头可通过该同步拍摄指令实现帧同步拍摄。这里的无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
最后拍摄同步装置40可将上述帧同步拍摄画面同步到其他电子设备终端,如观察客户终端设备上,以便用户对同步拍摄画面进行实时观看。
这样即完成了本优选实施例的拍摄同步装置40的同步拍摄画面的拍摄过程。
本发明的拍摄同步方法及同步装置通过网络广播的方式获取当前同步网络中的所有摄像头,并对所有摄像头进行帧同步拍摄;简化了多摄像头系统的安装流程以及使用流程,降低了多摄像头系统的制作成本;解决了现有技术的拍摄同步方法及同步方法的安装较为复杂、使用较为不便以及对应的多摄像头系统的制作成本较高的技术问题。
综上所述,虽然本发明已以优选实施例揭露如上,但上述优选实施例并非用以限制本发明,本领域的普通技术人员,在不脱离本发明的精神和范围内,均可作各种更动与润饰,因此本发明的保护范围以权利要求界定的范围为准。

Claims (19)

  1. 一种拍摄同步方法,用于通过多摄像头系统中的任一摄像头对多个所述摄像头进行同步拍摄操作,其中所述拍摄同步方法包括:
    通过网络广播的方式获取当前同步网络中的所有摄像头;
    获取两个所述摄像头的拍摄公共区域的公共特征点;
    根据所述公共特征点在两个所述摄像头的拍摄画面中的出现时间,确定两个所述摄像头之间的信号传输延时;
    根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;
    将所述同步拍摄指令通过无线网络发送至相应的摄像头;
    判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
    如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则判断接收到的所述同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;以及
    如接收到的所述同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则通过无线网络向所述当前同步网络中的所有摄像头发送同步拍摄中断指令。
  2. 根据权利要求1所述的拍摄同步方法,其中所述拍摄同步方法还包括步骤:将帧同步拍摄画面同步到其他电子设备终端。
  3. 根据权利要求1所述的拍摄同步方法,其中通过mDNS网络广播的方式获取当前同步网络中的所有摄像头;采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
  4. 根据权利要求1所述的拍摄同步方法,其中所有所述摄像头构成的所述当前同步网络为P2P网络;所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
  5. 一种拍摄同步方法,用于通过多摄像头系统中的任一摄像头对多个所述摄像头进行同步拍摄操作,其中所述拍摄同步方法包括:
    通过网络广播的方式获取当前同步网络中的所有摄像头;
    获取各个所述摄像头之间的信号传输延时;
    根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;以及
    将所述同步拍摄指令通过无线网络发送至相应的摄像头,以实现所述多摄像头系统中的所有摄像头的帧同步拍摄。
  6. 根据权利要求5所述的拍摄同步方法,其中所述获取各个所述摄像头之间的信号传输延时的步骤包括:
    建立两个所述摄像头之间的至少一次握手连接;
    根据两个所述摄像头之间的握手连接时间,确定两个所述摄像头之间的信号传输延时。
  7. 根据权利要求5所述的拍摄同步方法,其中所述获取各个所述摄像头之间的信号传输延时的步骤包括:
    获取两个所述摄像头的拍摄公共区域的公共特征点;
    根据所述公共特征点在两个所述摄像头的拍摄画面中的出现时间,确定两个所述摄像头之间的信号传输延时。
  8. 根据权利要求5所述的拍摄同步方法,其中所述拍摄同步方法还包括:
    判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
    如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则通过无线网络向所述当前同步网络中所有摄像头发送同步拍摄中断指令。
  9. 根据权利要求8所述的拍摄同步方法,其中所述拍摄同步方法还包括:
    判断是否接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,所述同步拍摄反馈指令由所述摄像头根据所述同步拍摄指令生成;
    如在设定时间内未接收到所述当前同步网络中所有摄像头的同步拍摄反馈指令,则判断接收到的所述同步拍摄反馈指令对应的摄像头是否包括所有特定摄像头;
    如接收到的所述同步拍摄反馈指令对应的摄像头未包括所有特定摄像头,则通过无线网络向所述当前同步网络中的所有摄像头发送同步拍摄中断指令。
  10. 根据权利要求5所述的拍摄同步方法,其中所述拍摄同步方法还包括步骤:
    将帧同步拍摄画面同步到其他电子设备终端。
  11. 根据权利要求5所述的拍摄同步方法,其中通过mDNS网络广播的方式获取当前同步网络中的所有摄像头。
  12. 根据权利要求5所述的拍摄同步方法,其中采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
  13. 根据权利要求5所述的拍摄同步方法,其中所有所述摄像头构成的所述当前同步网络为P2P网络。
  14. 根据权利要求5所述的拍摄同步方法,其中所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
  15. 一种拍摄同步装置,其包括:
    摄像头获取模块,用于通过网络广播的方式获取当前同步网络中的所有摄像头;
    传输延时获取模块,用于获取各个所述摄像头之间的信号传输延时;
    拍摄指令生成模块,用于根据各个所述摄像头之间的信号传输延时,生成每个所述摄像头的同步拍摄指令;以及
    拍摄模块,用于将将所述同步拍摄指令通过无线网络发送至相应的摄像头,以实现所述多摄像头系统中的所有摄像头的帧同步拍摄。
  16. 根据权利要求15所述的拍摄同步装置,其中通过mDNS网络广播的方式获取当前同步网络中的所有摄像头。
  17. 根据权利要求15所述的拍摄同步装置,其中采用D-bus通信机制将所述同步拍摄指令发送至相应的摄像头。
  18. 根据权利要求15所述的拍摄同步装置,其中所有所述摄像头构成的所述当前同步网络为P2P网络。
  19. 根据权利要求15所述的拍摄同步装置,其中所述无线网络包括但不限于Zigbee无线通信网络、Wifi无线网络或蓝牙无线网络中至少一个。
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