WO2018195879A1 - 视频录制及处理系统以及方法 - Google Patents

视频录制及处理系统以及方法 Download PDF

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Publication number
WO2018195879A1
WO2018195879A1 PCT/CN2017/082292 CN2017082292W WO2018195879A1 WO 2018195879 A1 WO2018195879 A1 WO 2018195879A1 CN 2017082292 W CN2017082292 W CN 2017082292W WO 2018195879 A1 WO2018195879 A1 WO 2018195879A1
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WIPO (PCT)
Prior art keywords
video
screen
display device
video frame
screen area
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Application number
PCT/CN2017/082292
Other languages
English (en)
French (fr)
Inventor
袁胜春
宗靖国
王伙荣
梁伟
刘德福
Original Assignee
西安诺瓦电子科技有限公司
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.)
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Application filed by 西安诺瓦电子科技有限公司 filed Critical 西安诺瓦电子科技有限公司
Priority to CN201780088380.0A priority Critical patent/CN110521212A/zh
Priority to PCT/CN2017/082292 priority patent/WO2018195879A1/zh
Publication of WO2018195879A1 publication Critical patent/WO2018195879A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof

Definitions

  • the present invention relates to the field of display application technologies, and in particular, to a video recording and processing system and method.
  • LED displays are primarily used as a carrier for advertising.
  • the live broadcast of the LED display is the same as the live broadcast of the live broadcast, such as live TV. Due to product differences in different regions, live broadcast advertisements may not be available in live broadcasts in different regions. The effect of the ad. How to replace the on-site screen advertisements with advertisements in different regions in the live broadcast of TVs in different regions, so that the maximization of the interests of live broadcasters is an urgent problem to be solved.
  • the present invention provides a video recording and processing system and method thereof for realizing display of different content on a target screen area when live broadcasts in different regions.
  • a video recording and processing system includes: an image capturing and screen recognition device, configured to perform video recording on a site where the target display device is located to obtain a screen area positioning identifier including the target display device. Recording a video, and identifying a screen area of the target display device in the recorded video according to the screen area positioning identifier And a screen content replacing device connected to the camera and screen recognition device for replacing content in the screen area identified in the recorded video with target content to obtain a target video signal as an output.
  • the screen area positioning identifier is composed of a plurality of light emitting units having preset distribution features and being in a lighting state disposed in an edge of the screen area of the target display device and in the screen area.
  • the plurality of light emitting units are a plurality of non-visible point light sources.
  • the target display device comprises a box body and a receiving card connecting the box body, and a plurality of the non-visible light point light sources are disposed inside the display area edge of the box body and the display area.
  • the screen area location identifier is a picture that is periodically displayed in the screen area of the target display device and has a particular content feature.
  • the screen having the specific content feature is a black screen displayed in a periodic black field time of the target display device, and the sampling time setting of the video recording is located in the target display device.
  • the periodic black field time is a black screen displayed in a periodic black field time of the target display device, and the sampling time setting of the video recording is located in the target display device.
  • the periodic black field time has a frequency equal to the field rate of the target display device.
  • the screen having the specific content feature is a display screen of a specific video frame having a preset content feature and a periodic display feature among the plurality of video frames alternately displayed by the target display device.
  • the sampling time setting of the video recording is located within the display time of the specific video frame.
  • the particular video frame is a monochrome video frame.
  • the particular video frame is a monochrome video frame generated by the target display device based on one of the specified input pixel data in the external input video frame.
  • the target display device comprises an LED display body, the LED display body comprises a receiving card and a box connecting the receiving card, the receiving card comprising: an image receiving module, an internal a specific video frame generating module, a first image driving module, a second image driving module, a multiplexer, and a frame display phase and time length adjustment module; the first image driving module is connected to the image receiving module, the second image The driving module is connected to the internal specific video frame generating module, and the image receiving module is configured to receive a first video frame of the plurality of video frames except the specific video frame, and the internal specific video frame generating module Generating the specific video frame synchronously under the action of a field sync signal of the first video frame, the multiplexer connecting the first image driving module and the second image driving module to receive the first An image driving module and the second driving module synchronously output the first video frame and the specific video frame and adjust phase and time length adjustment in the frame Under the control of the frame selection signal generated in the first block of the video frame and the particular video
  • the video recording and processing system further includes: a playback output device for outputting a video or an image to the target display device; and a synchronization device that connects the playback output device and the camera And the screen recognition device synchronizes the playback output device with the imaging and screen recognition device by generating a synchronization signal, or connects the target display device and the imaging and screen recognition device to generate a synchronization signal to cause the target display device and
  • the imaging and screen recognition devices are synchronized.
  • a video recording and processing method includes the following steps: Performing video recording at the site where the target display device is located and the sampling moment of the video recording is located in a screen display time of the target display device having a specific content feature and a periodic display feature to obtain a recorded video; according to the screen of the target display device The specific content feature and the periodic display feature of the screen displayed by the area during the screen display time identify the screen area in the recorded video; and the screen area identified in the recorded video The content is replaced with the target content to get the target video signal as an output.
  • the screen display time is a periodic black field time of the target display device, and a screen displayed by the screen area of the target display device in the screen display time is a black screen, and The sampling moment of the video recording is partially located within the periodic black field time.
  • the field rate of the periodic black field time is equal to the field rate of the target display device.
  • the screen display time is a display time of a specific video frame having a preset content feature and a periodic display feature among the plurality of video frames alternately displayed by the target display device, and the video The recorded sampling instant is only within the display time of the particular video frame; wherein the particular video frame is a monochrome video frame.
  • the specific video frame is generated according to one of the plurality of video frames except one of the video frames except the specific video frame.
  • a video recording and processing method includes the steps of: performing video recording on a site where the target display device is located to obtain a recorded video including a screen area location identifier of the target display device;
  • the screen area location identifier identifies a screen area of the target display device in the recorded video; and the recorded video
  • the content in the screen area identified therein is replaced with the target content to obtain a target video signal as an output.
  • the screen area positioning identifier is composed of a plurality of non-visible point light sources having preset distribution features and being illuminated in a screen area edge and a screen area of the target display device.
  • the screen area location identifier is a picture that is periodically displayed in the screen area of the target display device and has a specific content feature.
  • the target video signal is output as a live television signal or a live webcast signal.
  • One technical solution of the foregoing technical solutions has the following advantages or advantages: when a live broadcast in different regions is enabled, the live broadcast advertiser is allowed to implant different advertisement contents into the display area of the display device and import into different regions. In the live broadcast, thus maximizing the value of advertising.
  • FIG. 1A is a schematic diagram of a basic structure of a video recording and processing system according to an embodiment of the present invention
  • FIG. 1B is a schematic structural diagram of a specific implementation of the video recording and processing system shown in FIG. 1A;
  • FIG. 2 is a schematic view showing a state in which an infrared LED lamp is disposed on the casing shown in FIG. 1B;
  • FIG. 3 is a black screen displayed by using a periodic black field time as a screen area according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another implementation of a video recording and processing system according to an embodiment of the present invention.
  • FIG. 5B is a block diagram showing a specific implementation of the receiving card shown in FIG. 5A; FIG.
  • FIG. 6 is a timing diagram of the receiving card of FIG. 5B implementing an external input video frame and internally generating a specific video frame selective output;
  • FIG. 7 is a block diagram of a specific implementation of a receiving card according to another embodiment of the present invention.
  • a video recording and processing system includes: an imaging and screen recognition device and a screen content replacement device.
  • the camera and the screen recognition device are configured to perform video recording on the site where the target display device is located to obtain a recorded video including the screen area location identifier of the target display device, and identify the recorded video in the recorded video according to the screen area positioning identifier.
  • the target displays a screen area of the device.
  • a screen content replacing device connected to the camera and screen recognition device, for replacing content in the screen area identified in the recorded video with target content to obtain a target video signal as an output, for example, outputting as a live television signal Or webcast signal.
  • FIG. 1B is a schematic diagram of a specific implementation architecture of the video recording and processing system shown in FIG. 1A.
  • video recording and processing system 10 includes a playback output device 11, a display controller 12, an LED display body 13, an imaging and screen recognition device 15, and a screen content replacement device 16.
  • the play output device 11 is configured to output a played video or image, such as an advertisement on a court screen; specifically, the play output device 11 is, for example, a host computer on which the playback software is installed so that the played advertisement content can be output.
  • the display controller 12 is signal-connected to the playback output device 11, for example, its video input interface is connected to the playback output device 11 via a video cable (such as a DVI, HDMI cable, etc.) for processing the playback video or image output by the playback output device 11. (for example, performing decoding and video segmentation, etc.) and then transmitting to the receiving card 131 in the LED display body 13 through the image transmission channel; in addition, the display controller 12 can also pass through the data line through its own communication interface such as a serial port, a network port or a USB port.
  • the playback output device 11 is further connected to receive commands; in the present embodiment, the display controller 12 is, for example, various transmission cards.
  • the LED display panel 13 includes at least one receiving card 131 and at least one housing 133, all of which are spliced together to define a screen display area (or screen area) of the LED display body 13.
  • the receiving card 131 is configured to receive a video or image from the output port of the display controller 12 for image processing and display on the housing 133.
  • a single box 133 typically includes a plurality of LED strips, each of which is provided with an LED driver chip and a plurality of LED lamps as display pixels controlled by the LED driver chip, such as red, green, and blue LEDs. light.
  • the camera and screen recognition device 15 is used for capturing and collecting the scene of the LED display body 13 Information is used to implement video recording and to identify the screen area of the LED display body 13.
  • the screen content replacing device 16 is connected to the camera and screen recognition device 15 and is used for content replacement of the identified screen area to obtain a target video signal as an output, for example, as a live television signal or a live web signal, where the screen content is
  • the replacement device 16 is, for example, a host computer installed with image processing software, and the content replacement here is, for example, replacing the content in the screen area with a desired advertisement screen, so that the LED display screen can be displayed for live broadcasts of different regions, such as live television.
  • the advertisement content displayed on the body 13 is replaced with advertisements in different regions.
  • the information can be outputted on the LED display body 13 without affecting or affecting the audience of the LED display body 13 at the scene. It can also be recognized and positioned by the camera and screen recognition device 16.
  • a plurality of non-visible point light sources such as infrared LED lamps 1331 which are constantly lit or illuminated at a preset frequency are disposed on the respective housings 133 of the LED display body 133, and the position recognition is improved in order to improve the position.
  • the infrared LED lamp 1331 is also disposed in the display area of the casing 133, so that the foreign object can be prevented from being partially blocked by the casing 133. Unable to pinpoint the problem.
  • the image capturing and screen recognition apparatus 15 includes, for example, an image pickup apparatus for performing live video recording and sensing an infrared signal emitted from each of the infrared LED lamps 1331 on the cabinet 133, and a sense of sense in the recorded video of the image pickup apparatus.
  • the detected infrared signal distribution feature is an image processing device that positions the screen area of the LED display panel 13, such as a host computer on which image processing software is installed.
  • the infrared LED lamp 1331 here is only the LED display body.
  • An example of the screen area locating identifier of 13 can be used for other illuminating elements that can assist in positioning, for example, a circle of constantly lit light strips on the entire screen edge of the LED display body 13 as long as it can be output for auxiliary positioning.
  • the positioning identification signal of the screen area is sufficient.
  • the positioning of the screen area can also be realized by using the periodic display feature when the LED display body 13 itself displays the screen, without additionally providing a positioning identifier (such as the infrared LED lamp 1331 shown in FIG. 2).
  • a high-speed camera can be disposed in the image capturing and screen recognition device 15, and the LED display body 13 and the scene where it is photographed are assumed. If the field frequency of the LED display body 13 is 60 Hz, then there will be 60HZ black field time exists, then use the higher speed camera to shoot the LED display body 13, if the recorded picture has a black screen regularly and the black screen frequency is 60HZ, then the corresponding black screen area can be considered Is the screen area. As shown in FIG. 3, the camera completes the sampling at the video recording sampling time, and includes the recording scene background image and the LED display body 13 display screen in the sampled images, which is disorganized for the background image and is displayed on the LED.
  • the black and white image of the screen displayed by the screen body 13 is regular, and the black screen area that periodically appears is recognized as the screen area by the image processing apparatus in the image capturing and screen recognition apparatus.
  • the video recording acquisition time portion of the camera is located in the periodic black field time of the LED display body 13.
  • the screen display body of the LED display body 13 itself to display periodic features (such as the black field time periodic feature shown in FIG. 3) to locate the screen area, it is also possible to be on the LED display body 13.
  • the specific video frame is periodically displayed and the video recording sampling timing of the camera in the imaging and screen recognition device 15 is located in the LED display body 13
  • the video recording sampling time may also be partially located in the display of other video frames during the display time of the particular video frame and preferably other video frames that are not displayed in turn with the particular video frame during the display time of the LED display body 13.
  • a synchronization device 14 is added between the playback output device 11 and the camera and screen recognition device 15 to generate a synchronization signal for synchronizing the two. See FIG. 4 for details. It can be understood that in other embodiments, the synchronization signal generated by the synchronization device 14 can also provide the display controller 12 and the imaging and screen recognition device 15 without being provided to the playback output device 11, as well as the imaging and screen recognition device 15. A stable specific video frame picture is acquired.
  • the receiving card 131 of the embodiment includes: an image receiving module, an internal specific video frame generating module, a two-way image driving module, a multiplexer, and a frame display phase and time length adjusting module; wherein the image The receiving module is configured to receive an external input video frame, and the internal specific video frame generating module is configured to internally generate a specific video frame by using a field synchronization signal of the external input video frame, and the two image driving modules respectively connect the image receiving module and the internal specific video frame.
  • the module is generated to synchronously output the external input video frame and the internal generated specific video frame to the multiplexer to alternately output to the outside for display, thereby internally generating a specific video frame as a periodic output display feature; the frame display phase and length adjustment module is used for A frame selection signal is generated as a control signal of the multiplexer to control the display phase of the specific video frame generated internally and in time.
  • the receiving card 131 includes: an image receiving module 1311a, an internal specific video frame generating module 1311b, an image processing module 1312, image driving modules 1314 and 1315, a memory access control module 1316, a frame display phase and time length adjusting module 1317, and multiple selection.
  • the device (Mux) 1318 and the parameter module 1319 are preferably a plurality of functional modules integrated in the same programmable logic device (for example, an FPGA device).
  • the image receiving module 1311a is configured to receive data of a video frame (for example, provided by the playback output device 11) transmitted by the display controller 12 (see FIG. 4) and store the data in the memory, such as SDRAM, through the memory access control module 1316 (not shown) )in.
  • the internal specific video frame generating module 1311b is configured to locally generate one frame of data according to the command transmitted by the display controller 12 or the local register configuration to generate a specific video frame for internal use, and the internally generated specific video frame can be directly transmitted to the image.
  • the driving module 1315 is used; in the embodiment shown in FIG. 5B, the frame rate of the input video is 60 Hz, but the invention is not limited thereto, and may be other frame frequency sizes such as 50 Hz; internally generating a specific video frame is a single
  • the color video frames are, for example, red, green, blue, etc., and are preferably the highest grayscale monochrome video frames for easy identification.
  • the image processing module 1312 performs image processing of the external input video frame under the field synchronization signal of 60 Hz, specifically, reading the original data of the external input video frame from the memory through the memory access control module 1316, and then completing the gamma conversion and graying.
  • the degree is extracted or even corrected for functions such as brightness or bright chromaticity correction and stored in the memory through the memory access control module 1316; where the gradation extraction is, for example, an operation such as Bit separation, that is, the gradation extraction is typically after the correction processing.
  • the gray scale data is separated by each bit (bit) to convert the gray scale data into a manner of implementing weights differently according to different Bits.
  • a display synchronization signal is arranged between the two image driving modules 1314 and 1315 for output driving synchronization, an image driving module 1314 is used for output driving the external input video frame, and an image driving module 1315 is configured to perform internal generated specific video frames.
  • Output driver It can be seen that the difference between the two image driving modules 1314, 1315 is the difference of the input source, and the image driving module 1314 needs to read the external input video processed by the image processing module 1312 from the memory through the memory access control module 1316. The data of the frame is output-driven, and the image driving module 1315 directly acquires the data of the specific video frame generated internally from the internal specific video frame generating module 1311b for output driving.
  • the frame display phase/time adjustment module 1317 outputs the frame selection signal according to the parameter sent by the parameter module 1319, selects the output of the image driving module 1314, 1315, and finally realizes 120HZ video output at the output port of the multiplexer 1318;
  • the parameter delivered by the parameter module 1319 includes, for example, parameters such as a display phase offset and a display duration for internally generating a specific video frame stored in the non-volatile memory. It can be understood that the setting of the parameter module 1319 is for conveniently setting/adjusting the parameters such as the display phase offset and the display duration of a specific video frame. Of course, in some application cases, the parameter module 1319 may be omitted and displayed in the frame.
  • the phase-time-long adjustment module 1317 presets parameters such as a display phase offset and a display duration of a specific video frame.
  • an external input video frame (labeled as frame A) and an internally generated specific video frame (labeled as frame B) are respectively outputted at the two image driving modules 1314, 1315, and the frame selection signal is 60 Hz.
  • the video frame selects the output to achieve a video output of 120 Hz; for example, when the frame selection signal is logic "1", the output internally generates a specific video frame, that is, frame B, and the other time outputs an external input video frame, that is, frame A.
  • VS1 is the display start point of frame B (the same Also a display end point of frame A)
  • VS2 is the display end point of frame B (also the other display start point of frame A). It can also be seen from FIG. 6 that the output display time of the frame B is smaller than the output display time of the frame A.
  • the internally generated particular video frame may also be changed in real time with an external input video frame, such as the embodiment shown in FIG.
  • the receiving card 731 of the embodiment includes an image receiving module 7311a, an internal specific video frame generating module 7311b, image processing modules 7312 and 7313, image driving modules 7314 and 7315, a memory access control module 7316, and a frame display.
  • the phase and time length adjustment module 7317, the multiplexer (Mux) 7318, and the parameter module 7319 are preferably a plurality of functional modules integrated in the same programmable logic device.
  • the image receiving module 7311a is configured to receive data of an input video frame (for example, provided by the playback output device 11) transmitted from the display controller 12 (see FIG. 4) and store the data in the memory, such as SDRAM, through the memory access control module 7316 (not shown). Show).
  • the internal specific video frame generating module 7311b is configured to synchronously generate one frame data according to pixel data of a specified position in the external input video frame, for example, a certain specified pixel data, to internally generate a specific video frame, and internally generate a specific video frame data through the memory.
  • the access control module 7316 is stored in the memory; in the embodiment shown in FIG.
  • the frame rate of the input video is 60 Hz, but the invention is not limited thereto, and other frame frequency sizes such as 50 Hz may be used;
  • the internal generated specific video frame is generated according to the specified pixel data of the external input video frame, such as a single pixel data, which is typically a monochrome video frame, and thus can be changed in real time according to the data of the external input video frame;
  • the designated pixel data can be specified by the control output command generated by the playback output device 11 or the display controller 12 in FIG.
  • the image processing modules 7312 and 7313 respectively perform image processing of the external input video frame and the internal generation of the specific video frame under the field synchronization signal of 60 Hz. Specifically, the image processing module 7312 reads the external input video from the memory through the memory access control module 7316. The raw data of the frame then completes gamma conversion, grayscale extraction, and even corrects functions such as brightness or bright chrominance correction and is stored in memory through memory access control module 7316; image processing module 7313 via memory access control module 7316 The memory internally reads the data of the particular video frame and then performs gamma conversion, grayscale extraction, and even corrects functions such as brightness or bright chrominance correction and stores it in memory through the memory access control module 7316.
  • the grayscale extraction is, for example, an operation such as Bit separation, that is, the grayscale extraction is typically a grayscale data after the correction processing is performed in accordance with each bit (bit) to convert the grayscale data into different implementations according to different Bits.
  • bit separation an operation such as Bit separation
  • the grayscale extraction is typically a grayscale data after the correction processing is performed in accordance with each bit (bit) to convert the grayscale data into different implementations according to different Bits.
  • bit bit
  • a display synchronization signal is arranged between the two image driving modules 7314 and 7315 for output driving synchronization, an image driving module 7314 is used for output driving the external input video frame, and an image driving module 7315 is configured to internally generate a specific video frame for output. drive.
  • the image driving module 7314 needs to read the data of the external input video frame processed by the image processing module 7312 from the memory through the memory access control module 7316 and perform output driving, and the image driving module 7315 needs to access the control module through the memory.
  • the 7316 reads the data of the specific video frame internally generated by the image processing module 7313 from the memory and performs output driving.
  • the frame display phase/time adjustment module 7317 outputs a frame selection signal according to the parameter issued by the parameter module 7319, selects the output of the image driving module 7314, 7315, and finally realizes a video output of 120 Hz at the output port of the multiplexer 7318;
  • parameter module 7319 The parameters to be delivered include, for example, parameters such as a display phase offset and a display duration for internally generating a specific video frame stored in the non-volatile memory. It can be understood that the setting of the parameter module 7319 is for conveniently setting/adjusting the parameters such as the display phase offset and the display duration of a specific video frame. Of course, in some application cases, the parameter module 7319 can be omitted and displayed in the frame.
  • the phase and time length adjustment module 7317 presets parameters such as the display phase offset amount and the display duration of the specific video frame.
  • the display controller 12 and the LED display body 13 in the foregoing embodiments may be collectively referred to as an LED display device, and the LED display device may be replaced with other configurations with specific video frame generation in other embodiments.
  • Display device for function and video frame display phase and display duration adjustment function; camera and screen recognition device 15 and screen content replacement device 16 in the foregoing embodiments may be collectively referred to as video recording and replacing device; further, in other embodiments of the present invention
  • internally generating a specific video frame may also be generated by the display controller 12 and then transmitted by the display controller 12 to the receiving card in a periodic polling manner (for example, in an ABABAB... alternate input mode). 531.
  • the video frame output by the playback output device 11 and the specific video frame generated locally by the display controller 12 are an external input video frame and an internally generated video frame, respectively, with respect to the LED display device.
  • the frame display phase offset and the frame display duration adjustment of a specific video frame are not limited to being completed in the receiving card, and may also be performed in the display controller 12, which facilitates frame display phase in a whole manner for a specific video frame. The offset and frame display duration adjustments are made because the receiving card only intercepts the portion that is loaded by itself rather than the entire particular video frame.
  • external input video frames and specific video frames may also be provided by the playback output device 11 of FIG. 4 and periodically outputted (eg, output in an ABABAB... alternate manner) to the display controller 12.
  • the embodiment of the present invention records and locates the screen area by using the live video including the display content of the screen area, and thus can perform live broadcast in different areas (either through the television or through the network).
  • the live broadcast advertiser is allowed to insert different advertisement content through the content replacement in the screen area and import it into the live broadcast of different regions, thereby maximizing the value of the advertisement.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above integrated unit implemented in the form of a software functional unit can be stored in one
  • the computer can read the storage medium.
  • the software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

Abstract

本发明实施例涉及一种视频录制及处理系统以及方法。在所述视频录制及处理系统中，摄像及屏幕识别装置对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频并根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区域；以及屏幕内容替换装置，连接所述摄像及屏幕识别装置，用于将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。因此本发明实施例可以在不同地区直播时实现显示装置屏幕区域显示不同内容。

Description

视频录制及处理系统以及方法 技术领域
本发明涉及显示应用技术领域，尤其涉及一种视频录制及处理系统以及方法。
背景技术
在某些LED显示屏作为背景的环境中，比如足球场等，LED显示屏主要作为一种广告的载体应用。在现有的系统中，LED显示屏现场直播的广告与现场录制后直播例如电视直播的广告是一样的，由于不同地区的产品差异，现场直播的广告在不同地区的电视直播中不一定能起到广告的效果。如何能在不同地区的电视直播中，将现场的屏体广告替换成不同地区的广告，让直播广告商的利益最大化是目前亟待解决的问题。
发明内容
因此，本发明提出一种视频录制及处理系统及其方法，以在不同地区直播时实现目标屏幕区域显示播放不同内容。
具体地，本发明实施例提出的一种视频录制及处理系统，包括：摄像及屏幕识别装置，用于对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频，并根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区 域；以及屏幕内容替换装置，连接所述摄像及屏幕识别装置，用于将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
在本发明的一个实施例中，所述屏幕区域定位标识由设置在所述目标显示装置的屏幕区域边缘和屏幕区域内的具有预设分布特征且处于点亮状态的多个发光单元构成。
在本发明的一个实施例中，所述多个发光单元为多个非可见光点光源。
在本发明的一个实施例中，所述目标显示装置包括箱体和连接所述箱体的接收卡，所述箱体的显示区域边缘和显示区域内部设置有多个所述非可见光点光源。
在本发明的一个实施例中，所述屏幕区域定位标识为周期性显示在所述目标显示装置的所述屏幕区域且具有特定内容特征的画面。
在本发明的一个实施例中，所述具有特定内容特征的画面为所述目标显示装置的周期性黑场时间内显示的黑画面，所述视频录制的采样时刻设定位于所述目标显示装置的所述周期性黑场时间内。
在本发明的一个实施例中，所述周期性黑场时间的频率等于所述目标显示装置的场频。
在本发明的一个实施例中，所述具有特定内容特征的画面为所述目标显示装置交替显示的多个视频帧中具有预设内容特征和周期性显示特征的特定视频帧的显示画面，所述视频录制的采样时刻设定位于所述特定视频帧的显示时间内。
在本发明的一个实施例中，所述特定视频帧为单色视频帧。
在本发明的一个实施例中，所述特定视频帧为由所述目标显示装置根据外部输入视频帧中的一个指定像素数据生成的单色视频帧。
在本发明的一个实施例中，所述目标显示装置包括LED显示屏体，所述LED显示屏体包括接收卡和连接所述接收卡的箱体，所述接收卡包括：图像接收模块、内部特定视频帧生成模块、第一图像驱动模块、第二图像驱动模块、多路选择器以及帧显示相位及时长调节模块；所述第一图像驱动模块连接所述图像接收模块，所述第二图像驱动模块连接所述内部特定视频帧生成模块，所述图像接收模块用于接收所述多个视频帧中除所述特定视频帧之外的一个第一视频帧，所述内部特定视频帧生成模块用于在所述第一视频帧的场同步信号作用下同步生成所述特定视频帧，所述多路选择器连接所述第一图像驱动模块和所述第二图像驱动模块以接收所述第一图像驱动模块和所述第二驱动模块同步输出的所述第一视频帧和所述特定视频帧并在所述帧显示相位及时长调节模块产生的帧选择信号的控制下将所述第一视频帧和所述特定视频帧交替输出。
在本发明的一个实施例中，所述视频录制及处理系统还包括：播放输出装置，用于输出视频或图像至所述目标显示装置；以及同步装置，连接所述播放输出装置和所述摄像及屏幕识别装置以生成同步信号使所述播放输出装置和所述摄像及屏幕识别装置同步，或者连接所述目标显示装置和所述摄像及屏幕识别装置以生成同步信号使所述目标显示装置和所述摄像及屏幕识别装置同步。
此外，本发明实施例提出的一种视频录制及处理方法，包括步骤： 在目标显示装置所在现场进行视频录制并使视频录制的采样时刻位于所述目标显示装置的具有特定内容特征和周期性显示特征的画面显示时间内以得到录制视频；根据所述目标显示装置的屏幕区域在所述画面显示时间内显示的画面的所述特定内容特征和周期性显示特征在所述录制视频中识别出所述屏幕区域；以及将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
在本发明的一个实施例中，所述画面显示时间为所述目标显示装置的周期性黑场时间，所述目标显示装置的屏幕区域在所述画面显示时间内显示的画面为黑画面，以及所述视频录制的采样时刻部分地位于所述周期性黑场时间内。
在本发明的一个实施例中，所述周期性黑场时间的场频等于所述目标显示装置的场频。
在本发明的一个实施例中，所述画面显示时间为所述目标显示装置交替显示的多个视频帧中具有预设内容特征和周期性显示特征的特定视频帧的显示时间，以及所述视频录制的采样时刻仅位于所述特定视频帧的显示时间内；其中所述特定视频帧为单色视频帧。
在本发明的一个实施例中，所述特定视频帧是根据所述多个视频帧中除所述特定视频帧之外的一个视频帧中的一个指定像素数据生成。
再者，本发明另一实施例提出的一种视频录制及处理方法，包括步骤：对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频；根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区域；以及将所述录制视频 中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
在本发明的一个实施例中，所述屏幕区域定位标识由设置在所述目标显示装置的屏幕区域边缘和屏幕区域内的具有预设分布特征且处于点亮状态的多个非可见点光源构成，或者所述屏幕区域定位标识为周期性显示在所述目标显示装置的所述屏幕区域且具有特定内容特征的画面。
在本发明的一个实施例中，所述目标视频信号输出为电视直播信号或网络直播信号。
上述技术方案中的一个技术方案具有如下优点或有益效果：可以实现在不同的地区进行现场直播的时候，帮助直播广告商在显示装置的屏体显示区域植入不同的广告内容并导入到不同地区的直播中，从而使得广告的价值最大化。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A为本发明实施例的一种视频录制及处理系统的基本架构示意图；
图1B为图1A所示视频录制及处理系统的具体实现架构示意图；
图2为图1B所示箱体上配置有红外LED灯的状态示意图；
图3为本发明实施例利用周期性黑场时间显示的黑画面作为屏幕区 域定位标识时的视频录制原理示意图；
图4为本发明实施例的另一种视频录制及处理系统的具体实现架构示意图；
图5A为图4所示接收卡的一种原理示意图；
图5B为图5A所示接收卡的一种具体实现框图；
图6为图5B所示接收卡实现外部输入视频帧和内部生成特定视频帧选择性输出的时序图；
图7为本发明另一实施例提出的一种接收卡的具体实现框图。
具体实施方式
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，本领域普通技术人员在没有作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。
参见图1A，本发明实施例提出的一种视频录制及处理系统包括：摄像及屏幕识别装置和屏幕内容替换装置。其中，摄像及屏幕识别装置用于对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频并根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区域。屏幕内容替换装置，连接所述摄像及屏幕识别装置，用于将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出，例如输出为电视直播信号或网络直播信号。
参见图1B，其为图1A所示视频录制及处理系统的具体实现架构示意图。在图1B中，视频录制及处理系统10包括：播放输出装置11、显示控制器12、LED显示屏体13、摄像及屏幕识别装置15以及屏幕内容替换装置16。
播放输出装置11用于输出播放的视频或图像，比如球场屏幕上的广告；具体而言，播放输出装置11例如是安装有播放软件的上位机从而可以输出播放的广告内容。
显示控制器12信号连接播放输出装置11，例如其视频输入接口通过视频线(像DVI、HDMI线缆等)连接播放输出装置11以用于对将播放输出装置11输出的播放视频或图像进行处理(例如进行解码及视频分割等)后通过图像传输通道传输到LED显示屏体13中的接收卡131；此外显示控制器12还可以通过自身的通信接口例如串口、网口或USB口经由数据线进一步连接播放输出装置11以便于接收命令；本实施例中，显示控制器12例如是各种发送卡。
LED显示屏体13包括至少一个接收卡131和至少一个箱体133，所有箱体133拼接在一起定义出LED显示屏体13的屏体显示区域(或称屏幕区域)。接收卡131用于接收来自显示控制器12输出端口的视频或图像进行图像处理后显示在箱体133上。此处单个箱体133典型地包括多个LED灯板，每一个LED灯板上配置有LED驱动芯片以及受LED驱动芯片控制的多个作为显示像素的LED灯，例如红色、绿色、蓝色LED灯。
摄像及屏幕识别装置15用于摄像采集LED显示屏体13所在现场的 信息以实现视频录制以及对LED显示屏体13的屏幕区域进行识别。
屏幕内容替换装置16信号连接摄像及屏幕识别装置15且用于对识别出的所述屏幕区域进行内容替换以得到目标视频信号作为输出例如输出作为电视直播信号或网络直播信号，此处的屏幕内容替换装置16例如是安装有图像处理软件的上位机，而此处的内容替换例如是将屏幕区域内的内容替换为所需的广告画面，从而针对不同地区的直播例如电视直播可以将LED显示屏体13现场显示的广告内容替换为不同地区的广告。
承上述，为了完成对LED显示屏体13的屏幕区域的位置识别，可以通过在LED显示屏体13上输出一些信息，这些信息对LED显示屏体13所在现场的观众没有影响或影响较小但又能被摄像及屏幕识别装置16识别并定位。
例如，如图2所示，在LED显示屏体133的各个箱体133上设置多个常亮或者以预设频率点亮的非可见光点光源例如红外LED灯1331，而且为了提升位置识别的精确度，设计时除了在箱体133的显示区域边缘设置红外LED灯1331之外还在箱体133的显示区域内也设置红外LED灯1331，这样就可以避免因外物对箱体133局部遮挡而无法精确定位的问题。相应地，摄像及屏幕识别装置15例如包括：用于进行现场视频录制并感测箱体133上的各个红外LED灯1331发出的红外信号的摄像设备和用于在摄像设备的录制视频中根据感测到的红外信号分布特征定位出LED显示屏体13的屏幕区域的图像处理装置例如安装有图像处理软件的上位机。
当然，值得一提的是，此处红外LED灯1331仅仅是LED显示屏体 13的屏幕区域定位标识的一种举例，其他可以辅助定位的发光元件均可采用，例如在LED显示屏体13的整个屏幕边缘环绕一圈常亮的灯条，只要其能输出用于辅助定位屏幕区域的定位标识信号即可。
此外，在其他实施例，也可以利用LED显示屏体13本身显示画面时的周期性显示特征来实现屏幕区域的定位，而无需额外设置定位标识(比如图2所示的红外LED灯1331)。
具体地，例如图3所示，可以在摄像及屏幕识别装置15中配置高速摄像机，对LED显示屏体13及所在现场进行拍摄，假设LED显示屏体13的场频是60HZ，那么就会有60HZ的黑场时间存在，那么使用更高速的摄像机对LED显示屏体13进行拍摄，若拍摄录制的画面有规律的出现黑画面且黑画面的频率是60HZ，则可以认为相应的黑画面区域则是屏幕区域。如图3所示，摄像机在视频录制采样时刻完成采样，在采样到的这些画面中包括录制现场背景画面和LED显示屏体13显示画面，对于背景画面来说其是杂乱无章的，而对LED显示屏体13显示的画面来说其黑白是有规律的，通过摄像及屏幕识别装置中的图像处理装置识别出周期性出现的黑画面区域作为屏幕区域。此外，从图3中可以发现，摄像机的视频录制采集时刻部分位于LED显示屏体13的周期性黑场时间内。
另外，还值得说明的是，除了利用LED显示屏体13自身的画面显示周期性特征(例如图3所示的黑场时间周期性特征)来定位屏幕区域，还可以在LED显示屏体13上专门周期性显示特定视频帧并使摄像及屏幕识别装置15中的摄像机的视频录制采样时刻位于LED显示屏体13 上的特定视频帧的显示时间内且优选地不位于与特定视频帧轮流显示的其他视频帧在LED显示屏体13的显示时间内，当然视频录制采样时刻也可以部分地位于其他视频帧的显示时间内，只要能确保特定视频帧具有周期性显示特征即可，并且此处的特定视频帧的显示时间长度小于所述其他视频帧的显示时间长度。此外，播放输出装置11和摄像及屏幕识别装置15之间增设有同步装置14以生成同步信号使两者进行同步，具体可参见图4。可以理解的是，在其他实施例中，同步装置14产生的同步信号也可以提供显示控制器12和摄像及屏幕识别装置15而不提供至播放输出装置11，同样可以使摄像及屏幕识别装置15采集到稳定的特定视频帧画面。
至于在LED显示屏体13上专门周期性显示特定视频帧的实现方式可参见图5A。具体地，如图5A所示，本实施例的接收卡131包括：图像接收模块、内部特定视频帧生成模块、两路图像驱动模块、多路选择器和帧显示相位及时长调节模块；其中图像接收模块用于接收外部输入视频帧，内部特定视频帧生成模块用于在外部输入视频帧的场同步信号作用下内部生成特定视频帧，两路图像驱动模块分别连接图像接收模块和内部特定视频帧生成模块以将外部输入视频帧和内部生成特定视频帧同步输出至多路选择器以交替输出至外部进行显示，从而内部生成特定视频帧呈周期性输出显示特征；帧显示相位及时长调节模块用于产生帧选择信号作为多路选择器的控制信号以控制内部生成特定视频帧的显示相位及时长。
参见图5B，其为图5A所示接收卡的一种具体实现框图。在图5B 中，接收卡131包括：图像接收模块1311a、内部特定视频帧生成模块1311b、图像处理模块1312、图像驱动模块1314及1315、存储器访问控制模块1316、帧显示相位及时长调节模块1317、多路选择器(Mux)1318以及参数模块1319，其优选为整合在同一个可编程逻辑器件(例如FPGA器件)内的多个功能模块。
其中，图像接收模块1311a用于接收显示控制器12(参见图4)传送来的视频帧(例如由播放输出装置11提供)的数据并通过存储器访问控制模块1316存储到存储器例如SDRAM(图未示)中。
内部特定视频帧生成模块1311b用于根据显示控制器12传送来的命令或者本地寄存器配置定义好的内容本地生成一帧数据作为内部生成特定视频帧使用，内部生成的特定视频帧可以直接传输到图像驱动模块1315中使用；在图5B所示实施例中，输入视频的帧频为60HZ，但本发明并不以此为限，也可以是其它帧频大小例如50HZ；内部生成特定视频帧为单色视频帧例如红色、绿色、蓝色等基色视频帧且优选为最高灰度单色视频帧，以便于识别。
图像处理模块1312在60HZ的场同步信号下完成外部输入视频帧的图像处理，具体为通过存储器访问控制模块1316从存储器中读取外部输入视频帧的原始数据然后完成伽玛(Gamma)变换、灰度抽取甚至校正例如亮度或亮色度校正等功能并再通过存储器访问控制模块1316存储到存储器中；此处灰度抽取例如是Bit分离等操作，也就是说灰度抽取典型地是校正处理后的灰度数据按照每一Bit(位)进行分离操作以将灰度数据转变成按照不同Bit不同实现权重的方式。
两个图像驱动模块1314、1315之间配置有显示同步信号以进行输出驱动同步，图像驱动模块1314用于对外部输入视频帧进行输出驱动，图像驱动模块1315用于对内部生成的特定视频帧进行输出驱动。由此可见，这两个图像驱动模块1314、1315的区别在于输入源的不同，图像驱动模块1314需要通过存储器访问控制模块1316从存储器中读取经图像处理模块1312进行图像处理后的外部输入视频帧的数据并进行输出驱动，而图像驱动模块1315直接从内部特定视频帧生成模块1311b中获取内部生成的特定视频帧的数据进行输出驱动。
帧显示相位及时长调节模块1317根据参数模块1319下发的参数输出帧选择信号，对图像驱动模块1314、1315的输出进行选择，最终在多路选择器1318的输出端口实现120HZ的视频输出；此处，参数模块1319下发的参数例如包含存储在非易失性存储器中的用于内部生成特定视频帧的显示相位偏移量及显示时长等参数。此处可以理解的是，参数模块1319的设置是为了方便设置/调节特定视频帧的显示相位偏移量及显示时长等参数，当然在某些应用情形下也可以省略参数模块1319而在帧显示相位及时长调节模块1317中预设特定视频帧的显示相位偏移量及显示时长等参数。
承上述，如图6所示，外部输入视频帧(标记为帧A)与内部生成特定视频帧(标记为帧B)分别在两个图像驱动模块1314、1315输出，通过帧选择信号将60HZ的视频帧选择输出以实现120HZ的视频输出；例如帧选择信号为逻辑“1”时输出内部生成特定视频帧也即帧B，其他时刻输出外部输入视频帧也即帧A。图6中，VS1为帧B的显示起始点(同样 也是帧A的一个显示结束点)，VS2为帧B的显示结束点(同样也是帧A的另一个显示起始点)。从图6中还可以发现：帧B的输出显示时间小于帧A的输出显示时间。
在另一个实施例中，内部生成的特定视频帧也可以是随外部输入视频帧实时改变，例如图7所示实施例。具体地，参见图7，本实施例的接收卡731包括图像接收模块7311a、内部特定视频帧生成模块7311b、图像处理模块7312及7313、图像驱动模块7314及7315、存储器访问控制模块7316、帧显示相位及时长调节模块7317、多路选择器(Mux)7318以及参数模块7319，其优选为整合在同一个可编程逻辑器件内的多个功能模块。
其中，图像接收模块7311a用于接收显示控制器12(参见图4)传送来的输入视频帧(例如由播放输出装置11提供)的数据并通过存储器访问控制模块7316存储到存储器例如SDRAM(图未示)中。
内部特定视频帧生成模块7311b用于根据外部输入视频帧中的指定位置的像素数据例如某一个指定像素数据同步生成一帧数据作为内部生成特定视频帧使用，内部生成的特定视频帧的数据通过存储器访问控制模块7316存储到存储器中；在图7所示实施例中，输入视频的帧频为60HZ，但本发明并不以此为限，也可以是其它帧频大小例如50HZ；再者，此处的内部生成特定视频帧由于是根据外部输入视频帧的指定像素数据例如单个像素数据生成的，其典型的为单色视频帧，因而可以根据外部输入视频帧的数据实时改变；而且此处的指定像素数据可以由图4中的播放输出装置11或显示控制器12产生的控制命令指定。
图像处理模块7312、7313在60HZ的场同步信号下分别完成外部输入视频帧和内部生成特定视频帧的图像处理，具体为：图像处理模块7312通过存储器访问控制模块7316从存储器中读取外部输入视频帧的原始数据然后完成伽玛(Gamma)变换、灰度抽取甚至校正例如亮度或亮色度校正等功能并再通过存储器访问控制模块7316存储到存储器中；图像处理模块7313通过存储器访问控制模块7316从存储器中读取内部生成特定视频帧的数据然后完成伽玛(Gamma)变换、灰度抽取甚至校正例如亮度或亮色度校正等功能并再通过存储器访问控制模块7316存储到存储器中。此处灰度抽取例如是Bit分离等操作，也就是说灰度抽取典型地是校正处理后的灰度数据按照每一Bit(位)进行分离操作以将灰度数据转变成按照不同Bit不同实现权重的方式。
两个图像驱动模块7314、7315之间配置有显示同步信号以进行输出驱动同步，图像驱动模块7314用于对外部输入视频帧进行输出驱动，图像驱动模块7315用于对内部生成特定视频帧进行输出驱动。具体为：图像驱动模块7314需要通过存储器访问控制模块7316从存储器中读取经图像处理模块7312进行图像处理后的外部输入视频帧的数据并进行输出驱动，图像驱动模块7315需要通过存储器访问控制模块7316从存储器中读取经图像处理模块7313进行图像处理后的内部生成特定视频帧的数据并进行输出驱动。
帧显示相位及时长调节模块7317根据参数模块7319下发的参数输出帧选择信号，对图像驱动模块7314、7315的输出进行选择，最终在多路选择器7318的输出端口实现120HZ的视频输出；此处，参数模块7319 下发的参数例如包含存储在非易失性存储器中的用于内部生成特定视频帧的显示相位偏移量及显示时长等参数。此处可以理解的是，参数模块7319的设置是为了方便设置/调节特定视频帧的显示相位偏移量及显示时长等参数，当然在某些应用情形下也可以省略参数模块7319而在帧显示相位及时长调节模块7317中预设特定视频帧的显示相位偏移量及显示时长等参数。
最后，值得一提的是，前述实施例中的显示控制器12和LED显示屏体13可以统称为LED显示装置，而且该LED显示装置在其他实施例中可以替换成其他配置有特定视频帧生成功能和视频帧显示相位及显示时长调节功能的显示装置；前述实施例中的摄像及屏幕识别装置15和屏幕内容替换装置16可以统称为视频录制及替换装置；再者，在本发明其他实施例中，内部生成特定视频帧也可以是由显示控制器12生成然后再由显示控制器12将输入视频帧和特定视频帧以周期性轮流输入方式(例如以ABABAB…交替输入方式)传送给接收卡531，在此情形下播放输出装置11输出的视频帧和显示控制器12本地产生的特定视频帧相对于LED显示装置而言分别为外部输入视频帧和内部产生视频帧。此外，特定视频帧的帧显示相位偏移和帧显示时长调节不限于在接收卡中完成，也可以在显示控制器12中完成，这样就有利于对特定视频帧以整幅方式进行帧显示相位偏移和帧显示时长调节，因为接收卡只会截取属于自己带载的部分而非整幅特定视频帧。另外，外部输入视频帧和特定视频帧也可以均由图4中的播放输出装置11提供并周期性轮流输出(例如以ABABAB…交替方式输出)至显示控制器12。
综上所述，本发明实施例通过录制包含屏幕区域显示内容的现场视频并利用屏幕区域定位标识对屏幕区域进行识别定位，因此可以实现在不同的地区进行现场直播(可以通过电视也可以通过网络直播)的时候，帮助直播广告商在屏幕区域通过内容替换植入不同的广告内容并导入到不同地区的直播中，从而使得广告的价值最大化。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多路单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多路网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个 计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (15)

  1. 一种视频录制及处理系统，其特征在于，包括：
    摄像及屏幕识别装置，用于对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频，并根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区域；
    屏幕内容替换装置，连接所述摄像及屏幕识别装置，用于将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
  2. 如权利要求1所述的视频录制及处理系统，其特征在于，所述屏幕区域定位标识由设置在所述目标显示装置的屏幕区域边缘和屏幕区域内的具有预设分布特征且处于点亮状态的多个发光单元构成。
  3. 如权利要求2所述的视频录制及处理系统，其特征在于，所述目标显示装置包括箱体和连接所述箱体的接收卡，所述箱体的显示区域边缘和显示区域内部设置有多个所述发光单元。
  4. 如权利要求1所述的视频录制及处理系统，其特征在于，所述屏幕区域定位标识为周期性显示在所述目标显示装置的所述屏幕区域且具有特定内容特征的画面。
  5. 如权利要求4所述的视频录制及处理系统，其特征在于，所述具有特定内容特征的画面为所述目标显示装置的周期性黑场时间内显示的黑画面，所述视频录制的采样时刻设定位于所述目标显示装置的所述周 期性黑场时间内。
  6. 如权利要求4所述的视频录制及处理系统，其特征在于，所述具有特定内容特征的画面为所述目标显示装置交替显示的多个视频帧中具有预设内容特征和周期性显示特征的特定视频帧的显示画面，所述视频录制的采样时刻设定位于所述特定视频帧的显示时间内。
  7. 如权利要求6所述的视频录制及处理系统，其特征在于，所述特定视频帧为由所述目标显示装置根据外部输入视频帧中的一个指定像素数据生成的单色视频帧。
  8. 如权利要求6所述的视频录制及处理系统，其特征在于，所述目标显示装置包括LED显示屏体，所述LED显示屏体包括接收卡和连接所述接收卡的箱体，所述接收卡包括：图像接收模块、内部特定视频帧生成模块、第一图像驱动模块、第二图像驱动模块、多路选择器以及帧显示相位及时长调节模块；所述第一图像驱动模块连接所述图像接收模块，所述第二图像驱动模块连接所述内部特定视频帧生成模块，所述图像接收模块用于接收所述多个视频帧中除所述特定视频帧之外的一个第一视频帧，所述内部特定视频帧生成模块用于在所述第一视频帧的场同步信号作用下同步生成所述特定视频帧，所述多路选择器连接所述第一图像驱动模块和所述第二图像驱动模块以接收所述第一图像驱动模块和所述第二驱动模块同步输出的所述第一视频帧和所述特定视频帧并在所述帧显示相位及时长调节模块产生的帧选择信号的控制下将所述第一视频帧和所述特定视频帧交替输出。
  9. 如权利要求1所述的视频录制及处理系统，其特征在于，还包括：
    播放输出装置，用于输出视频或图像至所述目标显示装置；
    同步装置，连接所述播放输出装置和所述摄像及屏幕识别装置以生成同步信号使所述播放输出装置和所述摄像及屏幕识别装置同步，或者连接所述目标显示装置和所述摄像及屏幕识别装置以生成同步信号使所述目标显示装置和所述摄像及屏幕识别装置同步。
  10. 一种视频录制及处理方法，其特征在于，包括步骤：
    在目标显示装置所在现场进行视频录制并使视频录制的采样时刻位于所述目标显示装置的具有特定内容特征和周期性显示特征的画面显示时间内以得到录制视频；
    根据所述目标显示装置的屏幕区域在所述画面显示时间内显示的画面的所述特定内容特征和周期性显示特征在所述录制视频中识别出所述屏幕区域；以及
    将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
  11. 如权利要求10所述的视频录制及处理方法，其特征在于，所述画面显示时间为所述目标显示装置的周期性黑场时间，所述目标显示装置的屏幕区域在所述画面显示时间内显示的画面为黑画面，以及所述视频录制的采样时刻部分地位于所述周期性黑场时间内。
  12. 如权利要求10所述的视频录制及处理方法，其特征在于，所述画面显示时间为所述目标显示装置交替显示的多个视频帧中具有预设内容特征和周期性显示特征的特定视频帧的显示时间，以及所述视频录制的采样时刻仅位于所述特定视频帧的显示时间内；其中所述特定视频帧 为单色视频帧。
  13. 如权利要求12所述的视频录制及处理方法，其特征在于，所述特定视频帧是根据所述多个视频帧中除所述特定视频帧之外的一个视频帧中的一个指定像素数据生成。
  14. 一种视频录制及处理方法，其特征在于，包括步骤：
    对目标显示装置所在现场进行视频录制以得到包含所述目标显示装置的屏幕区域定位标识的录制视频；
    根据所述屏幕区域定位标识在所述录制视频中识别出所述目标显示装置的屏幕区域；以及
    将所述录制视频中识别出的所述屏幕区域内的内容替换成目标内容以得到目标视频信号作为输出。
  15. 如权利要求14所述的视频录制及处理方法，其特征在于，所述屏幕区域定位标识由设置在所述目标显示装置的屏幕区域边缘和屏幕区域内的具有预设分布特征且处于点亮状态的多个非可见点光源构成，或者所述屏幕区域定位标识为周期性显示在所述目标显示装置的所述屏幕区域且具有特定内容特征的画面。
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