WO2018152953A1 - Procédé et appareil de traitement de données vidéo, et support de stockage informatique - Google Patents

Procédé et appareil de traitement de données vidéo, et support de stockage informatique Download PDF

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Publication number
WO2018152953A1
WO2018152953A1 PCT/CN2017/081923 CN2017081923W WO2018152953A1 WO 2018152953 A1 WO2018152953 A1 WO 2018152953A1 CN 2017081923 W CN2017081923 W CN 2017081923W WO 2018152953 A1 WO2018152953 A1 WO 2018152953A1
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WO
WIPO (PCT)
Prior art keywords
video data
signal
digital
played
analog
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PCT/CN2017/081923
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English (en)
Chinese (zh)
Inventor
唐红博
朱海涛
蒋宗文
郭军
Original Assignee
东方网力科技股份有限公司
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Publication of WO2018152953A1 publication Critical patent/WO2018152953A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase

Definitions

  • the present invention relates to the field of analog/digital video processing technologies, and in particular, to a video data processing method and apparatus, and a computer storage medium.
  • an object of the present invention is to provide a video data processing method and apparatus, Try to solve or at least alleviate the problems that exist above.
  • the present invention provides a video data processing method, including:
  • the video data includes at least analog video data
  • the video request instruction includes a digital control signal
  • the to-be-played video data includes digital video data to be played, according to the
  • the video request instruction reads the corresponding video data from the second external device, and processes the video data to obtain the video data to be played, including:
  • the analog video data comprises an analog video signal, the analog video data being read from the second external device according to the digital control signal,
  • the analog video data is processed to obtain the digital video data to be played, including:
  • the quantized analog video signal is encoded to obtain digital video data to be played.
  • the analog video signal comprises a luminance signal
  • the encoding the quantized analog video signal comprises:
  • Adding a blanking substrate to the filtered luminance signal adding to the blanking control signal
  • the amplitude of the luminance signal after the blanking substrate is added is adjusted, and then the amplitude-adjusted luminance signal is inserted into the digital composite synchronization signal, and the digital control signal includes a blanking control signal and a digital composite synchronization signal.
  • the video data includes at least digital video data
  • the video request instruction includes an on-demand request instruction and a decoding instruction
  • the to-be-played video data includes analog video data to be played
  • an embodiment of the present application provides a video data processing apparatus, including:
  • a receiving unit configured to receive a video request instruction of the first external device for the video data
  • a processing unit configured to read corresponding video data from the second external device according to the video request instruction, and process the video data to obtain video data to be played;
  • a transmission unit configured to transmit the video data to be played to the first external device.
  • the video data includes at least analog video data
  • the video request instruction includes a digital control signal
  • the to-be-played video data includes digital video data to be played
  • the processing unit further Used for:
  • the analog video data comprises an analog video signal
  • the processing unit is further configured to:
  • the quantized analog video signal is encoded to obtain digital video data to be played.
  • the analog video signal comprises a luminance signal
  • the processing unit is further configured to:
  • the signal includes a blanking control signal and a digital composite sync signal.
  • the video data includes at least digital video data
  • the video request instruction includes an on-demand request instruction and a decoding instruction
  • the to-be-played video data includes analog video data to be played
  • the processing unit is also used to:
  • an embodiment of the present application provides a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement the steps of the foregoing method.
  • FIG. 1 is a flowchart of a video data processing method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing conversion of a digital video signal to an analog video signal according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing conversion of an analog video signal to a digital video signal according to an embodiment of the present invention
  • FIG. 4 is a structural diagram of a video data processing apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an analog device component middleware provided by an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a digital device component middleware provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a video stream definition provided by an embodiment of the present invention.
  • FIG. 1 is a flowchart of a video data processing method according to an embodiment of the present invention. As shown in FIG. 1, the method begins in step S110.
  • a video request instruction of the first external device to the video data is received.
  • the first external device may be, but not limited to, a monitor, a camera, a DVR, an IP camera, etc.
  • the video data transmitted by the first external device generally includes analog video data and digital video data, and the present invention does not impose any limitation.
  • step S120 according to the video request instruction, the corresponding video data is read from the second external device, and the video data is processed to obtain the video data to be played.
  • the data transmitted by the first external device may be analog video data or digital video data
  • the video data is processed by different video request instructions for different video data, which is described by the following embodiments.
  • the video request instruction includes a digital control signal
  • the to-be-played video data includes digital video data to be played
  • the analog video is read from the second external device according to the digital control signal.
  • the second external device may be, but not limited to, a monitor, a camera, a DVR, an IP camera, etc., and the present invention does not impose any limitation.
  • the analog video data includes an analog video signal, after the analog video data is read from the second external device according to the digital control signal, the analog video signal is sampled; the sampled analog video signal is quantized; and the quantized analog video signal is compared Encoding, obtaining digital video data to be played, and transmitting digital video data to be played in different encoding formats through different transmission protocols, for example, transmitting different encoding formats (such as MPEG1) on the network through transmission protocols such as NPS, TS over UDP, and RTP. Audio and video data of MPEG2, MPEG4, H.264, etc.).
  • different encoding formats such as MPEG1
  • the call of the video in the public security system is taken as an example.
  • the police station in each area may use a monitor to monitor the condition of the cell or the road, and the public security center may use an IP camera to monitor the surrounding situation.
  • the video data obtained by the local police station is generally analog video data, and the user receives the input instruction through the control keyboard, and the video matrix host receives the analog video, and the management server controls the video matrix host to simulate the video number after receiving the instruction input by the user.
  • the video matrix host can also transmit the analog video data to the monitor for the corresponding staff to view.
  • the video data obtained by the public security center is generally digital video data. Since the original digital video data is relatively large, it needs to be encoded by the encoder, and the encoded digital video data is stored in the management center, and the control keyboard of the public security center receives the user input.
  • the instruction, the management center decodes the stored digital video data according to the instruction input by the user, and sends it to the corresponding monitor for the staff to view.
  • the public security center When the public security center wants to view the video data of a police station, the public security center sends a video request command to the video data processing platform, and the platform acquires the analog video data of a police station according to the video request instruction, and the platform simulates the above through the video conversion module and the encoder.
  • the video data is processed, for example, by converting the above analog video data signal into a digital video data signal and outputting the digital video data signal to the public security center, and the public security center decodes and views.
  • an analog video signal such as a luminance signal and a chrominance signal in the analog video signal may be encoded.
  • the luminance signal and the chrominance signal are respectively taken as an example for description.
  • the digital control signal When encoding the quantized analog video signal, sampling the luminance signal in the read digital video data; filtering the sampled luminance signal; adding a blanking basis to the filtered luminance signal, according to The blanking control signal adjusts the amplitude of the luminance signal after adding the blanking substrate, and then inserts the digital composite synchronization signal into the amplitude-adjusted luminance signal, and the digital control signal includes a blanking control signal and a digital composite synchronization signal.
  • the luminance signal read by the read data controller is double-oversampled by the brightness double oversampler, and the twice-oversampled luminance signal is low-pass filtered by the over-sampling luminance low-pass filter, and the low pass is passed.
  • the bandwidth of the filtered luminance signal is reduced, which is more conducive to the decoding of subsequent decoders.
  • the blanking substrate is added to the twice-oversampled luminance signal by the first adder.
  • the blanking signal generated by the first multiplier according to the video timing generator is blanked up/down Under the control of the expander, the amplitude of the luminance signal after adding the blanking substrate is adjusted.
  • a digital composite sync signal is added to the amplitude-adjusted luminance signal by a second adder under the control of a synchronous up-down expander, the digital composite sync signal being generated by a timing generator.
  • the luminance low-pass filter and the over-sampling luminance low-pass filter may be FIR filters, and may be other devices for implementing low-pass filtering, which is not specifically limited in the present invention.
  • the above various adders and multipliers can be implemented by using logic gates, and the present invention does not impose any limitation.
  • the chrominance signal read by the read data controller is double-oversampled by the chrominance twice oversampler, and the chrominance low pass filter is used to double the oversampled chrominance signal after oversampling.
  • the color burst signal is inserted into the low-pass filtered chrominance signal by the multiplexer under the control of the color burst signal controller, and the chrominance signal of the inserted color burst signal is modulated by the modulator, and the second multiplication method is performed.
  • the amplitude of the modulated chrominance signal is adjusted under the control of the blanking rise/fall expander according to the blanking control signal (including the blanking control signal in the digital control signal).
  • the chrominance signal modulated by the third adder and the luminance signal added to the digital composite sync signal are added.
  • the video data includes digital video data
  • the video request instruction includes an on-demand request instruction and a decoding instruction
  • the to-be-played video data includes analog video data to be played
  • the number is read from the second external device according to the on-demand request instruction.
  • the video data is decoded according to the decoding instruction to obtain analog video data to be played.
  • the call of the video in the public security system is also taken as an example.
  • a police station wants to view the video data of the public security center, it is input through the control keyboard of the police station.
  • the on-demand request instruction after receiving the above-mentioned request for on-demand request, the video data processing platform obtains the corresponding digital analog video from the public security center, and the platform decodes the digital analog video through the digital-to-analog conversion module and the decoder to obtain the analog video data to be played.
  • the analog video data to be played is transmitted to the management center of the corresponding police station for viewing by relevant personnel.
  • step S130 the video data to be played is transmitted to the first external device.
  • the invention combines digital video and analog video organically to form a new generation network video system with convenient resource sharing and convenient interconnection control.
  • the present invention can also complete powerful functions such as video capture, compression, transmission, control, storage, retrieval, playback, remote network access, and network download. It allows many users and operators located in different locations to flexibly apply all resources shared in the system according to their permissions.
  • the video processing apparatus of the present invention adopts the idea of component middleware in supporting various types of video matrix and control keyboard, and the middleware of the device includes a middle of a device component and a digital device component. Pieces.
  • a hardware abstraction layer "unified device control interface layer" is set up between the actual device control and the upper layer application to isolate the specificity of the specific device and define a unified device control interface.
  • the structure diagram of the analog device component middleware can be referred to FIG. 5.
  • the bottom layer is the driver support API layer, typically such as a serial port, which is responsible for transmitting device control signals to or from the physical device to the upper layer, and Provides basic, portable support for upper-level driver development.
  • driver support API layer is specific device driver layers, such as video switching matrix, control keyboard, pan/tilt drive, and so on.
  • This layer is responsible for translating the standard control signals (matrix image switching) from the upper layer into specific device control signals and transmitting them, or translating the information acquired from the specific device into standard device input information (such as alarm signals) and sending them to the upper layer.
  • standard control signals matrix image switching
  • control keyboard control keyboard
  • pan/tilt drive pan/tilt drive
  • the analog device component middleware (unified device control interface layer). This layer is mainly responsible for device creation, deletion, signal distribution and acquisition, and provides a unified programming interface for the upper layer.
  • the top layer is the analog device control service layer. This layer is responsible for distributing the device control signals from the client to the specific device driver through the lower layer, or distributing the signals of the specific device driver layer from the lower layer to the client (possibly one signal will be sent to multiple clients), explaining and processing accordingly. Agreement.
  • Analog device component middleware provides a consistent set of programming interfaces to provide unified device control interface services for specific device drivers.
  • Each device has a property called the device model, and the unified device control interface finds the driver for that device through this model.
  • the device model is a 32-bit value, the upper 8 bits indicate the type of drive (see table below), and the lower 24 bits are determined by the driver writer, but different drivers must have different device models (eg, 16-digit manufacturer number plus 8-bit product) Number composition).
  • the interface of the analog device component middleware is defined as follows:
  • analog device component middleware interface is merely illustrative, and the invention is not limited thereto.
  • FIG. 6 A schematic diagram of the structure of the digital device middleware can be referred to FIG. 6.
  • the digital device component middleware decomposes various processing processes of the video application into several interface components, and the upper layer application can combine these interface components to generate complex applications, so that various digital codecs can be easily accessed.
  • Devices such as DVRs and HD IPCs.
  • the digital device component middleware decomposes the device management functions into several components, including IPoHost, IPoChannel, IPoPtzControl, IPoVodReader, IPoSourceChannel, IPoTargetChannel, IPoAudioChannel, IPoDecoder and other interfaces.
  • a unified format is defined for various video streams, and a unified format is used for video forwarding and video storage.
  • the video stream definition is shown in Figure 7.
  • FIG. 4 is a structural diagram of a video data processing apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes a receiving unit 410, a processing unit 420, and a transmission unit 430.
  • the receiving unit 410 is configured to receive a video request instruction of the first external device for the video data
  • the processing unit 420 is configured to read corresponding video data from the second external device according to the video request instruction, and process the video data to obtain video data to be played.
  • the video data includes at least analog video data
  • the video request instruction includes a digital control signal
  • the to-be-played video data includes digital video data to be played
  • the processing unit 420 is further configured to: according to the digital control signal, Reading the analog video data in the second external device, processing the analog video data to obtain the digital video data to be played.
  • the analog video data includes an analog video signal
  • the processing unit 420 is further configured to: after the analog video data is read from the second external device according to the digital control signal, perform the analog video signal Sampling; quantifying the sampled analog video signal; encoding the quantized analog video signal to obtain digital video data to be played.
  • the analog video signal includes a luminance signal
  • the processing unit 420 is further configured to: sample the luminance signal in the read digital video data; filter the sampled luminance signal; and filter the filtered
  • the luminance signal is added to the blanking substrate, and the amplitude of the luminance signal after adding the blanking substrate is adjusted according to the blanking control signal, and then the digital composite synchronization signal is inserted in the amplitude-adjusted luminance signal, where the digital control signal includes blanking control Signal and digital composite sync signals.
  • the video data includes at least digital video data
  • the video request instruction includes an on-demand request instruction and a decoding instruction
  • the to-be-played video data includes analog video data to be played
  • the processing unit 420 is further configured to: according to the on-demand request instruction And reading the digital video data from the second external device, and decoding the digital video data according to the decoding instruction to obtain the analog video data to be played.
  • the transmitting unit 430 is configured to transmit the video data to be played to the first external device.
  • Embodiments of the present application may also provide a computer readable storage medium having stored thereon a computer program, wherein the computer program is executed by a processor to implement steps of the foregoing method Step.
  • modules or units or components of the devices in the examples disclosed herein may be arranged in a device as described in this embodiment, or alternatively may be positioned differently than the devices in this example. In one or more devices.
  • the modules in the foregoing examples may be combined into one module or may be further divided into a plurality of sub-modules.
  • modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined.
  • Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de traitement de données vidéo, et un support de stockage informatique. Le procédé consiste à : recevoir, d'un premier dispositif externe, une instruction de demande vidéo portant sur des données vidéo ; d'après l'instruction de demande vidéo, lire des données vidéo correspondantes à partir d'un second dispositif externe, et traiter les données vidéo de sorte à obtenir des données vidéo devant être lues ; et transmettre, au premier dispositif externe, les données vidéo devant être lues.
PCT/CN2017/081923 2017-02-27 2017-04-25 Procédé et appareil de traitement de données vidéo, et support de stockage informatique WO2018152953A1 (fr)

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CN201710109055.XA CN106851206A (zh) 2017-02-27 2017-02-27 一种视频数据处理方法和装置
CN201710109055.X 2017-02-27

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