WO2011137866A2 - Method, device and system for video signal processing - Google Patents

Method, device and system for video signal processing Download PDF

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Publication number
WO2011137866A2
WO2011137866A2 PCT/CN2011/077105 CN2011077105W WO2011137866A2 WO 2011137866 A2 WO2011137866 A2 WO 2011137866A2 CN 2011077105 W CN2011077105 W CN 2011077105W WO 2011137866 A2 WO2011137866 A2 WO 2011137866A2
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WO
WIPO (PCT)
Prior art keywords
video
video signal
unit
brightness adjustment
signal
Prior art date
Application number
PCT/CN2011/077105
Other languages
French (fr)
Chinese (zh)
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WO2011137866A3 (en
Inventor
颜栋卿
Original Assignee
华为终端有限公司
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Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to CN2011800013383A priority Critical patent/CN102318337A/en
Priority to PCT/CN2011/077105 priority patent/WO2011137866A2/en
Publication of WO2011137866A2 publication Critical patent/WO2011137866A2/en
Publication of WO2011137866A3 publication Critical patent/WO2011137866A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region

Definitions

  • the present invention relates to the field of terminal technologies, and in particular, to a method, device and system for processing a video signal. Background technique
  • the current technical solution generally is to turn on the lighting in the room or to set the lamp as ambient lighting next to the television to increase the brightness of the environment. If the brightness and position of the lighting or the background light are not suitable, it will affect the eyes from being affected. The effect of the damage, and the lighting or backlight is turned on requires user intervention, which is inconvenient. Summary of the invention
  • the present invention provides a method, a device and a system for processing a video signal, so that when the surrounding environment is dark, the video playback device can automatically adjust the brightness of the video image according to the brightness of the ambient light, and reduce the Eye damage and does not require user intervention.
  • An embodiment of the present invention provides a method for processing a video signal, including: acquiring an electrical signal, the electrical signal is used to indicate the degree of ambient light and darkness; determining a brightness adjustment amplitude according to the electrical signal; and adjusting the amplitude according to the brightness Performing color gamut space conversion on the received video signal; outputting the converted video signal.
  • the embodiment of the present invention further provides a video signal processing apparatus, including an electrical signal acquiring unit, an input unit, a video processing unit, and an output unit;
  • the electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of brightness of the ambient light, and send the signal to the video processing unit;
  • the input unit is configured to input a video signal to the video processing unit
  • the video processing unit is configured to determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut space conversion on the received video signal according to the brightness adjustment amplitude;
  • the output unit is configured to output the color gamut spatially converted video signal.
  • the embodiment of the present invention further provides a video signal processing system, which includes: an input device, a video processing device, an output device, and a light sensing unit;
  • the input module is configured to input a video signal to the video signal processing device;
  • the video processing device is configured to perform brightness adjustment processing on the video signal received by the input module, and send the video signal subjected to the brightness adjustment processing to the output a module
  • the video processing device includes an electrical signal acquisition unit, an input unit, a video processing unit, and an output unit, wherein: the electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of ambient light shading, and send the signal to the video processing Unit
  • the input unit is configured to input a video signal to the video processing unit
  • the video processing unit is configured to receive the electrical signal, determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude; the output unit is configured to output The color gamut space converted video signal.
  • the output module is configured to output a video signal subjected to brightness adjustment processing.
  • the light sensing unit is used by the light sensing unit to sense the brightness of the ambient light, convert it into an electrical signal indicating the degree of light and darkness of the ambient light, and send it to the electrical signal acquisition unit.
  • the video playback device can automatically adjust the brightness of the video screen according to the brightness of the ambient light, so that the brightness of the video image is adapted to the brightness of the ambient light to reduce the video image and the surrounding area.
  • the contrast between the environment and the eyes reduces the damage to the eyes and does not require user intervention, which improves the user experience.
  • FIG. 1 is a schematic structural diagram of a video signal processing system in an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a video signal processing apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a video signal processing method in an embodiment of the present invention.
  • FIG. 4 is a detailed structural diagram of a video signal processing apparatus in an embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing a correspondence relationship between an electric signal and an ambient light level according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing a corresponding relationship between a video brightness adjustment amplitude and an electric signal according to an embodiment of the present invention
  • Detailed flow chart of the signal processing method detailed description
  • the embodiment of the invention provides a method for processing a video signal.
  • the video signal processing device can automatically adjust the brightness of the video picture according to the brightness of the ambient light, so that the brightness of the video picture can be adapted to the brightness of the ambient light, and the video picture and the surrounding area are reduced.
  • the contrast between the environment and the eyes reduces the damage to the eyes and does not require user intervention, which improves the user experience.
  • Embodiments of the present invention also provide corresponding video signal processing apparatus and systems. The details are described below separately.
  • FIG. 1 is a schematic structural diagram of a video signal processing system according to an embodiment of the present invention.
  • the video signal processing system includes an input module 101, a video processing device 102, an output module 103, and a light sensing unit 104:
  • An input module 101 is coupled to the video processing device 102 for inputting a video source signal to the video processing device 102.
  • the video source signal may be a tuned radio frequency signal or a network media stream input signal.
  • the video processing device 102 is connected to the input module 101 and the output module 103 for receiving the video signal input by the input module 101, and performing brightness adjustment processing on the video signal according to the electrical signal received from the light sensing unit 104, and then The video signal subjected to the brightness adjustment processing is output to the output module 103.
  • the video signal processing apparatus may also perform processing such as encoding, decoding, descrambling, demultiplexing, analog-to-digital conversion, and the like on the video signal.
  • the output module 103 is connected to the video processing device 102, and configured to receive the brightness adjustment processed video signal output by the video processing device 102, and transmit the brightness adjustment processed video signal to the video playback device for playing, or Transfer to other video processing systems for further processing.
  • the light sensing unit 104 is configured to sense the degree of light and darkness of the environment in which the device is located, convert the light and darkness of the environment into an electrical signal indicating the degree of light and darkness of the ambient light, and convert the electrical The signal is sent to video processing device 102.
  • the light sensing unit 104 can be a light sensor or a camera.
  • the optical sensing unit 104 can be independent of the video processing device 102, such as the video and video processing device 102 is located in the set top box, and the optical sensing unit 104 is located on the television, and the optical sensing unit 104 transmits the electrical signal.
  • the light sensing unit 104 and the video processing device 102 are on the same physical physical structure, such as in a set top box.
  • the video signal processing system inputs a video signal to a video processing device through an input module, and the video processing device performs brightness adjustment processing on the video signal according to the electrical signal received from the light sensing unit, and the processed video is processed.
  • the signal is output to the output module, and the output module outputs to the video playback device or other video processing system, thereby realizing the adjustment of the brightness of the video.
  • FIG. 2 a schematic structural diagram of a video signal processing apparatus in an embodiment of the present invention is shown.
  • the video signal processing apparatus includes an electrical signal acquisition unit 201, an input unit 202, a video processing unit 203, and an output unit 204, where:
  • the electrical signal acquisition unit 201 is configured to acquire an electrical signal indicating the degree of ambient light shading, and transmit it to the video processing unit 203;
  • the input unit 202 is configured to input a video signal to the video processing unit 203;
  • the video processing unit 203 is configured to receive the electrical signal, determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude.
  • the video processing unit 203 may be a CPU (Central Processing Unit) and/or a GPU (Graphic Processing Unit);
  • the output unit 204 is configured to output the converted video signal.
  • the video processing unit 203 includes:
  • the video codec unit 2031 is configured to perform processing such as encoding, decoding, descrambling, demultiplexing, analog-to-digital conversion, and the like on the received video signal.
  • the video codec unit 2031 may be a CPU and/or a GPU;
  • the video brightness adjusting unit 2032 is configured to determine a brightness adjustment amplitude according to the electrical signal, perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude, and output the converted video signal to a video coding and decoding unit. 2031.
  • the video brightness adjustment unit 2032 may be a CPU or a separate hardware module.
  • the video brightness adjustment unit 2032 receives the decoded video transmission stream of the video codec unit 2031, performs brightness adjustment on the video transmission stream, and outputs the result to the video codec unit 2031 for encoding to form a playable video. signal.
  • the video signal processing apparatus may further include: a light sensing unit 205, a storage unit 206, and a high speed dynamic storage unit 207;
  • the light sensing unit 205 is configured to sense the degree of light and darkness of the environment in which the device is located, convert the light and darkness of the environment into an electrical signal indicating the degree of light and darkness of the ambient light, and send the electrical signal to the video processing unit 203.
  • the light sensing unit 205 can be a light sensor or a camera;
  • the storage unit 206 is configured to store a system program
  • the high speed dynamic storage unit 207 is configured to store temporary data, and the temporary data is buffered data during video signal processing.
  • the video signal processing device in this embodiment senses the brightness of the ambient light by the light sensing unit and converts it into a signal indicating the degree of light and darkness of the ambient light, and the video processing unit acquires the signal and is video by the video processing unit.
  • the brightness adjustment unit according to the signal to the video The signal is subjected to brightness adjustment processing so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the damage to the eyes.
  • FIG. 3 a flowchart of a video signal processing method in an embodiment of the present invention is provided. The method includes the following steps:
  • the brightness of the video image can be compared with the ambient light.
  • the degree of shading is adapted to reduce the contrast between the video and the surrounding environment, reducing the damage to the eyes.
  • the video signal processing apparatus includes a video processor 40 and a light sensor 41, which is a preferred embodiment of the video processing unit 203, and the light sensor 41 is a preferred implementation of the light sensing unit 205. example.
  • the video signal processing device receives the video input signal, and the video processor encodes, decodes, descrambles, demultiplexes, and performs analog-to-digital conversion on the input signal, and the ambient light is input and received according to the light sensor. The degree adjusts the brightness of the output video screen.
  • the light sensor 41 is configured to sense the brightness of the ambient light of the video signal processing device, and convert the ambient light brightness to an electrical signal indicating the brightness of the ambient light to the video amplitude adjuster 404.
  • the format of the electrical signal is determined by the device itself.
  • the electrical signal (indicated by D) corresponds to the degree of ambient light shading (indicated by L), and the correspondence is determined by the device itself.
  • the ambient light shading degree L is lower than a certain threshold (indicated by LJimen)
  • the video brightness adjustment processing is started, and when the ambient light shading degree L is higher than the threshold value, the video brightness adjustment processing is not performed.
  • the threshold can be set at the factory, or a user interface can be provided, which is determined according to the user's selection.
  • the relationship between the electrical signal D and the ambient light shading degree L is linearly corresponding as shown in FIG. 5a.
  • the video processor 40 specifically includes:
  • the descrambling and demultiplexing module 401 is configured to receive a video input signal and perform descrambling and demultiplexing processing thereon.
  • the video input signal may be a radio frequency signal or a network media stream signal, and the radio frequency signal is first tuned and demodulated and then transmitted to the descrambling and demultiplexing module 401.
  • the descrambling and demultiplexing module 401 cooperates with the smart/IC card to descramble the received scrambled signal, and demultiplexes the descrambled code stream to obtain an audio transport stream and a video transport stream, and video transmission.
  • the video decoding and processing module 402 is configured to perform decoding and video processing on the video transport stream received from the descrambling and demultiplexing module 401.
  • the video transport stream is a compressed video signal that needs to be decoded for subsequent video processing, including video size scaling, interlaced scan signal to progressive scan signal conversion, noise reduction, and the like.
  • the decoded and video processed video signal is transmitted to the timing generator 403.
  • the timing generator 403 is configured to generate clock parameters and control signals required for playing the video signal, and add the clock parameters and control signals to the video signal received by the timing generator 403, and add clock parameters and control The video signal of the signal is transmitted to the gamut space conversion mode Block 405.
  • the video amplitude adjuster 404 is configured to determine a brightness adjustment amplitude according to an electrical signal received by the light sensor 41 indicating the degree of brightness of the ambient light, the brightness adjustment amplitude corresponding to the brightness of the ambient light. Video amplitude adjuster 404 transmits the brightness adjustment amplitude to color gamut spatial conversion module 405.
  • the video amplitude adjuster 404 determines an appropriate brightness adjustment amplitude a R , a e , and 8 according to the electrical signal D transmitted by the light sensor 41, and the corresponding relationship is as shown in FIG. 5b.
  • the signal D is less than or equal to 0.2 DJJmen, it is determined that the values of a R , a G and a B are 0.2.
  • the electrical signal D is greater than 0.2 DJJmen is less than or equal to 0.4 DJJmen, it is determined that a R , a G , a B value is 0.2, when the electrical signal When D is greater than 0.4 DJJmen is less than or equal to 0.6 DJJmen, it is determined that a R , a G , and a B are 0.4.
  • the electrical signal D is greater than 0.6 DJJmen is less than or equal to 0.8 DJJmen, the a R , a G , and a B values are determined to be 0.6.
  • the electrical signal D is greater than 0.8 DJJmen is less than or equal to DJJmen, the a R , a G , and a B values are determined to be 0.8.
  • the brightness adjustment amplitude is determined by the corresponding relationship as five levels ⁇ 0.2, 0.4, 0.6, 0.8, 1.0, respectively corresponding to their respective ambient light shading levels.
  • the gamut space conversion module 405 is configured to perform color gamut spatial conversion on the video signal received from the video coding and decoding unit according to the brightness adjustment amplitude, and output the converted video signal to the video coding and decoding unit.
  • the color gamut space conversion module 405 receives the brightness adjustment amplitude from the video amplitude adjuster 404 for the degree of ambient light shading, and adjusts the amplitude to the video signal received by the timing generator 403 according to the brightness adjustment amplitude.
  • the conversion between the RGB gamut space and the YUV gamut space is performed, and the video signal after the gamut space conversion is transmitted to the video encoder 406.
  • the gamut space conversion module 405 is responsible for completing the conversion of the video signal between the RGB gamut space and the YCbCr gamut space, according to Rec. ITU-R BT.601, from Studio.
  • the conversion method of RGB to YCbCr is
  • each color component corresponding to R, B, and G is multiplied by a brightness adjustment amplitude a R , a e , a B , so that the values of the respective color components are changed to correspond The degree of light and darkness of the ambient light.
  • the video encoder 406 is configured to receive a video signal from the color gamut space conversion module 405, and perform encoding processing to form a video signal that can be used for playing. Corresponding to the video processing unit 203 in FIG.
  • the video processor 40 is also divided into a video encoding and decoding unit and a video brightness adjusting unit.
  • the video encoding and decoding unit includes descrambling and The demultiplexing module 401, the video decoding and processing module 402, the timing generator 403, the video encoder 406, and the video brightness adjusting unit include a video amplitude adjuster 404 and a color gamut space conversion module 405.
  • the brightness adjusted video signal is used for transmission to a video playback device for playback, or to other video processing systems for further processing.
  • the video signal processing apparatus in this embodiment decodes and demultiplexes the input video source signal by the descrambling and demultiplexing module, and transmits the video source signal to the video decoding and processing module, and the video decoding and processing module decodes the video signal.
  • the frequency signal is transmitted to the timing generator, and the timing generator adds a clock parameter and a control signal to the video signal, and transmits the signal to the color gamut space conversion module, and the color gamut space conversion module according to the brightness of the ambient light received by the video amplitude adjuster
  • the signal is subjected to brightness adjustment processing on the video signal received from the timing generator, so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the damage to the eyes.
  • FIG. 6 a detailed flowchart of a video signal processing method in an embodiment of the present invention is provided.
  • the method flow corresponds to the structural composition of the video signal processing apparatus of FIG.
  • the detailed processing of each step is completed by the corresponding modules in FIG.
  • the specific steps are:
  • the video signal may be a radio frequency signal or a network media stream signal, and the radio frequency signal needs to be subjected to tuning and demodulation processing;
  • the obtained video signal is descrambled and demultiplexed to obtain an audio transport stream and a video transport stream;
  • the obtained video transmission stream is subjected to video decoding and video size scaling, interlaced scanning signal to progressive scan signal conversion, noise reduction, and the like;
  • a clock parameter and a control signal to the decoded video signal.
  • a clock parameter and a control signal required for playing the video signal are added to the video signal after the video decoding and processing;
  • sensing the degree of light and darkness of the ambient light and converting the degree of light and darkness of the ambient light into an electrical signal capable of indicating the degree of light and darkness of the ambient light;
  • the video brightness adjustment process when the ambient light brightness degree L is lower than a certain threshold, the video brightness adjustment process is started, and when the ambient light brightness degree L is higher than the threshold, the video is not bright.
  • the threshold can be set at the factory, or a user interface can be provided, which is determined according to the user's selection. After the video brightness adjustment process is started, the corresponding ambient light brightness level is first determined according to the received electrical signal D.
  • the brightness adjustment amplitude of the brightness adjustment of the video is determined according to the received electrical signal, and the brightness adjustment amplitude corresponds to the brightness of the ambient light;
  • the appropriate brightness adjustment amplitudes a R , a e , a B are determined according to the electrical signal D, and the corresponding relationship is as shown in FIG. 5b.
  • a R is determined.
  • a G a B value is 0.2
  • a R , a G , a B value is 0.2
  • the electrical signal D is greater than 0.4 DJJmen is less than or equal to 0.6 DJJmen, determine a R , a G , a B value is 0.4.
  • a R , a G , and a B are 0.6.
  • a R , a G , a B value is 0.8.
  • the electrical signal is greater than DJJmen, it is determined that a R , a G , a B value is 1.
  • the brightness adjustment amplitude is determined to be five levels by the correspondence relationship, that is, 0.2, 0.4, 0.6, 0.8, and 1.0, respectively corresponding to their respective ambient light shading degrees.
  • the video signal with the clock parameter and the control signal is converted between the RGB gamut space and the YCbCr gamut space according to the brightness adjustment amplitude;
  • the conversion between the RGB gamut space and the YCbCr gamut space is performed according to the following formula.
  • Rec.lTU-R BT.601 specifies that the conversion method from Studio RGB to YCbCr is In order to realize the brightness adjustment of the video signal, we added the brightness adjustment amplitude in the conversion process between the above RGB gamut space and the YCbCr gamut space, and the gamut space conversion method for realizing the video brightness adjustment is:
  • each color component corresponding to R, B, and G is multiplied by a brightness adjustment amplitude a R , a e , a B , so that the values of the respective color components are changed to correspond The degree of light and darkness of the ambient light.
  • the signal after the color space conversion is subjected to encoding processing to form a video signal that can be used for playing;
  • Video output, the processed video signal is transmitted to a video playback device for playback, or transmitted to other video signal processing systems for further processing.
  • a video transmission stream and an audio transmission stream are obtained by decoding and demultiplexing the input video source signal, and then decoding, noise reduction, video scaling, and the like are performed on the video transmission stream, and clock parameters and control signals are added. And then adjusting the brightness of the video signal according to the signal indicating the degree of brightness of the ambient light, so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the brightness of the eye.
  • the storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

Disclosed in embodiments of the present invention are a method and a device for video signal processing, relating to the technical field of terminals. Disclosed is a method for video signal processing, comprising: acquiring an electrical signal indicating ambient light brightness; determining a brightness adjustment value on the basis of the electrical signal; performing, on the basis of the brightness adjustment value, color space conversion on a received video signal; outputting the converted video signal. Also disclosed in embodiments of the present invention are a device and a system corresponding to the video signal processing method. Embodiments of the present invention enable a video playback device, when in conditions of comparative darkness, to automatically adjust the brightness of a video screen according to the ambient brightness, thus lowering the contrast between the video screen and the surroundings, thereby reducing damage to eyes.

Description

一种视频信号的处理方法、 装置与系统 技术领域  Method, device and system for processing video signal
本发明涉及终端技术领域，尤其涉及一种视频信号的处理方法、 装置 与系统。 背景技术  The present invention relates to the field of terminal technologies, and in particular, to a method, device and system for processing a video signal. Background technique
用户在周围黑暗的环境下观看电视节目时， 由于电视图像与周围环境 的明暗反差强烈，对眼睛的刺激与伤害很大。  When the user watches the TV program in the surrounding dark environment, the contrast between the TV image and the surrounding environment is strong, and the eye is very irritating and harmful.
当前技术方案一般是开启房间内的照明灯或是在电视机旁设置灯为环 境照明， 使环境亮度提高， 这种方式如果照明灯或背景灯的亮度与位置不 合适，会影响其防止眼睛受到伤害的效果，而且照明灯或背景灯开启需要 用户干预，较为不便。 发明内容  The current technical solution generally is to turn on the lighting in the room or to set the lamp as ambient lighting next to the television to increase the brightness of the environment. If the brightness and position of the lighting or the background light are not suitable, it will affect the eyes from being affected. The effect of the damage, and the lighting or backlight is turned on requires user intervention, which is inconvenient. Summary of the invention
鉴于以上所述的问题，本发明提出了一种视频信号的处理方法、 装置 与系统，以实现在周围环境较暗时，视频播放装置能够根据环境光线明暗 程度自动调节视频画面的亮度,减少对眼睛的伤害，并且不需要用户的干预 操作。 本发明实施例提出了一种视频信号的处理方法，包括：获取电信号， 所述电信号用于表示环境光线明暗程度；根据所述电信号确定亮度调节幅 值；根据所述亮度调节幅值对接收的视频信号进行色域空间转换；输出所 述转换后的视频信号。 相应的，本发明实施例还提出了一种视频信号处理装置，包括电信号 获取单元、 输入单元、 视频处理单元、 输出单元； In view of the above problems, the present invention provides a method, a device and a system for processing a video signal, so that when the surrounding environment is dark, the video playback device can automatically adjust the brightness of the video image according to the brightness of the ambient light, and reduce the Eye damage and does not require user intervention. An embodiment of the present invention provides a method for processing a video signal, including: acquiring an electrical signal, the electrical signal is used to indicate the degree of ambient light and darkness; determining a brightness adjustment amplitude according to the electrical signal; and adjusting the amplitude according to the brightness Performing color gamut space conversion on the received video signal; outputting the converted video signal. Correspondingly, the embodiment of the present invention further provides a video signal processing apparatus, including an electrical signal acquiring unit, an input unit, a video processing unit, and an output unit;
所述电信号获取单元用于获取表示环境光线明暗程度的电信号，并发 送给所述视频处理单元；  The electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of brightness of the ambient light, and send the signal to the video processing unit;
所述输入单元用于向所述视频处理单元输入视频信号；  The input unit is configured to input a video signal to the video processing unit;
所述视频处理单元用于根据所述电信号确定亮度调节幅值，并根据所 述亮度调节幅值对接收的视频信号进行色域空间转换；  The video processing unit is configured to determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut space conversion on the received video signal according to the brightness adjustment amplitude;
所述输出单元用于输出所述色域空间转换后视频信号。 相应的 ，本发明实施例还提出了一种视频信号处理系统，其特征在于， 包括：输入装置、 视频处理装置 、 输出装置、 光感应单元；  The output unit is configured to output the color gamut spatially converted video signal. Correspondingly, the embodiment of the present invention further provides a video signal processing system, which includes: an input device, a video processing device, an output device, and a light sensing unit;
所述输入模块，用于向所述视频信号处理装置输入视频信号； 所述视频处理装置用于对接收于输入模块的视频信号进行亮度调节处 理，并将经过亮度调节处理的视频信号发送到输出模块，所述视频处理装 置包括电信号获取单元、 输入单元、 视频处理单元、 输出单元，其中 ： 所述电信号获取单元用于获取表示环境光线明暗程度的电信号，并发 送给所述视频处理单元；  The input module is configured to input a video signal to the video signal processing device; the video processing device is configured to perform brightness adjustment processing on the video signal received by the input module, and send the video signal subjected to the brightness adjustment processing to the output a module, the video processing device includes an electrical signal acquisition unit, an input unit, a video processing unit, and an output unit, wherein: the electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of ambient light shading, and send the signal to the video processing Unit
所述输入单元用于向所述视频处理单元输入视频信号；  The input unit is configured to input a video signal to the video processing unit;
所述视频处理单元用于接收所述电信号，根据所述电信号确定亮度调 节幅值，并根据所述亮度调节幅值对接收的视频信号进行色域空间转换； 所述输出单元用于输出所述色域空间转换后视频信号。  The video processing unit is configured to receive the electrical signal, determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude; the output unit is configured to output The color gamut space converted video signal.
所述输出模块用于输出经过亮度调节处理的视频信号。  The output module is configured to output a video signal subjected to brightness adjustment processing.
所述光感应单元用于光感应单元用于感应环境光线明暗程度，将其转 化为表示环境光线明暗程度的电信号，并将其发送给所述电信号获取单元。 通过本发明实施例，实现在周围环境较暗时，视频播放装置能够根据 环境光线明暗程度自动调节视频画面的亮度，使视频画面的亮度与环境光 线的明暗程度相适应，以降低视频画面与周围环境的明暗反差，减小对眼 睛的伤害，并且不需要用户的干预操作，提升了用户体验。 附图说明 The light sensing unit is used by the light sensing unit to sense the brightness of the ambient light, convert it into an electrical signal indicating the degree of light and darkness of the ambient light, and send it to the electrical signal acquisition unit. Through the embodiment of the invention, when the surrounding environment is dark, the video playback device can automatically adjust the brightness of the video screen according to the brightness of the ambient light, so that the brightness of the video image is adapted to the brightness of the ambient light to reduce the video image and the surrounding area. The contrast between the environment and the eyes reduces the damage to the eyes and does not require user intervention, which improves the user experience. DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现 有技术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 付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。  In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.
图 1是本发明实施例中视频信号处理系统的结构示意图 ；  1 is a schematic structural diagram of a video signal processing system in an embodiment of the present invention;
图 2是本发明实施例中视频信号处理装置的结构示意图 ；  2 is a schematic structural diagram of a video signal processing apparatus according to an embodiment of the present invention;
图 3是本发明实施例中视频信号处理方法的流程图 ；  3 is a flowchart of a video signal processing method in an embodiment of the present invention;
图 4是本发明实施例中视频信号处理装置的详细结构示意图 ；  4 is a detailed structural diagram of a video signal processing apparatus in an embodiment of the present invention;
图 5a是本发明实施例中电信号与环境光线明暗程度的对应关系示意图 ； 图 5b是本发明实施例中视频亮度调节幅值与电信号的对应关系示意图 ； 图 6是本发明实施例中视频信号处理方法的详细流程图。 具体实施方式  FIG. 5 is a schematic diagram showing a correspondence relationship between an electric signal and an ambient light level according to an embodiment of the present invention; FIG. 5 is a schematic diagram showing a corresponding relationship between a video brightness adjustment amplitude and an electric signal according to an embodiment of the present invention; Detailed flow chart of the signal processing method. detailed description
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它实施例，都属于本发明保护的 范围。 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts are protected by the present invention. Scope.
本发明实施例提供一种视频信号的处理方法，视频信号处理装置能够 根据环境光线明暗程度自动调节视频画面的亮度，使视频画面的亮度能够 与环境光线的明暗程度相适应，降低视频画面与周围环境的明暗反差，减 小对眼睛的伤害，并且不需要用户的干预操作，提升了用户体验。 本发明 实施例还提供相应的视频信号处理装置与系统。 以下分别进行详细说明。 如图 1所示，是本发明实施例中视频信号处理系统的结构示意图。 所 述视频信号处理系统包括输入模块 101、视频处理装置 102、输出模块 103 以及光感应单元 104：  The embodiment of the invention provides a method for processing a video signal. The video signal processing device can automatically adjust the brightness of the video picture according to the brightness of the ambient light, so that the brightness of the video picture can be adapted to the brightness of the ambient light, and the video picture and the surrounding area are reduced. The contrast between the environment and the eyes reduces the damage to the eyes and does not require user intervention, which improves the user experience. Embodiments of the present invention also provide corresponding video signal processing apparatus and systems. The details are described below separately. FIG. 1 is a schematic structural diagram of a video signal processing system according to an embodiment of the present invention. The video signal processing system includes an input module 101, a video processing device 102, an output module 103, and a light sensing unit 104:
输入模块 101 ,与视频处理装置 102相连，用于向视频处理装置 102 输入视频源信号。 在本实施例中 ，视频源信号可以是经过调谐的射频信号 或者网络媒体流输入信号。  An input module 101 is coupled to the video processing device 102 for inputting a video source signal to the video processing device 102. In this embodiment, the video source signal may be a tuned radio frequency signal or a network media stream input signal.
视频处理装置 102 ,与输入模块 101和输出模块 103相连，用于接收 所述输入模块 101输入的视频信号，并根据接收自光感应单元 104的电信 号对所述视频信号进行亮度调节处理，然后将经过亮度调节处理的视频信 号输出到输出模块 103。 所述视频信号处理装置还可对视频信号进行进行 编码、 解码、 解扰、 解复用、 模数转换等处理。  The video processing device 102 is connected to the input module 101 and the output module 103 for receiving the video signal input by the input module 101, and performing brightness adjustment processing on the video signal according to the electrical signal received from the light sensing unit 104, and then The video signal subjected to the brightness adjustment processing is output to the output module 103. The video signal processing apparatus may also perform processing such as encoding, decoding, descrambling, demultiplexing, analog-to-digital conversion, and the like on the video signal.
输出模块 103 ,与视频处理装置 102相连，用于接收所述视频处理装 置 102输出的经过亮度调节处理的视频信号，并将所述经过亮度调节处理 的视频信号传输至视频播放装置进行播放，或者传输至其他视频处理系统 做进一步处理。  The output module 103 is connected to the video processing device 102, and configured to receive the brightness adjustment processed video signal output by the video processing device 102, and transmit the brightness adjustment processed video signal to the video playback device for playing, or Transfer to other video processing systems for further processing.
光感应单元 104 ,用于感应本装置所处环境的光线明暗程度，将所述 环境的光线明暗程度转化为表示环境光线明暗程度的电信号，并将所述电 信号发送给视频处理装置 102。 在本实施例中 ，光感应单元 104可为光线 感应器或摄像头。 The light sensing unit 104 is configured to sense the degree of light and darkness of the environment in which the device is located, convert the light and darkness of the environment into an electrical signal indicating the degree of light and darkness of the ambient light, and convert the electrical The signal is sent to video processing device 102. In this embodiment, the light sensing unit 104 can be a light sensor or a camera.
需要注意的是，在物理实体结构上，光感应单元 104可以独立于视频 处理装置 102，如视频视频处理装置 102位于机顶盒中 ，而光感应单元 104 位于电视机上，光感应单元 104将电信号发送给视频处理装置 104；或者， 光感应单元 104与视频处理装置 102处于同一物理实体结构上，如都位于 机顶盒中。  It should be noted that, in the physical physical structure, the optical sensing unit 104 can be independent of the video processing device 102, such as the video and video processing device 102 is located in the set top box, and the optical sensing unit 104 is located on the television, and the optical sensing unit 104 transmits the electrical signal. To the video processing device 104; or, the light sensing unit 104 and the video processing device 102 are on the same physical physical structure, such as in a set top box.
本发明实施例中提供的视频信号处理系统，通过输入模块将视频信号 输入到视频处理装置，视频处理装置根据接收自光感应单元的电信号对视 频信号进行亮度调节处理，并将经过处理的视频信号输出到输出模块， 由 输出模块输出到视频播放装置或其他视频处理系统，从而实现了对视频的 亮度进行调节。 为了进一步掲示本发明的技术方案，说明视频信号处理装置的结构组 成，如图 2所示，给出了本发明实施例中视频信号处理装置的结构示意图。 所述视频信号处理装置包括电信号获取单元 201 ，输入单元 202，视频处理 单元 203和输出单元 204 ,其中 ：  The video signal processing system provided in the embodiment of the present invention inputs a video signal to a video processing device through an input module, and the video processing device performs brightness adjustment processing on the video signal according to the electrical signal received from the light sensing unit, and the processed video is processed. The signal is output to the output module, and the output module outputs to the video playback device or other video processing system, thereby realizing the adjustment of the brightness of the video. In order to further illustrate the technical solution of the present invention, a structural composition of a video signal processing apparatus will be described. As shown in FIG. 2, a schematic structural diagram of a video signal processing apparatus in an embodiment of the present invention is shown. The video signal processing apparatus includes an electrical signal acquisition unit 201, an input unit 202, a video processing unit 203, and an output unit 204, where:
所述电信号获取单元 201用于获取表示环境光线明暗程度的电信号， 并传输给视频处理单元 203；  The electrical signal acquisition unit 201 is configured to acquire an electrical signal indicating the degree of ambient light shading, and transmit it to the video processing unit 203;
所述输入单元 202用于向视频处理单元 203输入视频信号；  The input unit 202 is configured to input a video signal to the video processing unit 203;
所述视频处理单元 203用于接收所述电信号，根据所述电信号确定亮 度调节幅值，根据所述亮度调节幅值对接收的视频信号进行色域空间转换。 在本实施例中 ，视频处理单元 203可以为 CPU ( Central Processing Unit, 中央处理器）和 /或 GPU ( Graphic Processing Unit ,图形处理器）； 所述输出单元 204用于输出所述转换后视频信号。 The video processing unit 203 is configured to receive the electrical signal, determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude. In this embodiment, the video processing unit 203 may be a CPU (Central Processing Unit) and/or a GPU (Graphic Processing Unit); The output unit 204 is configured to output the converted video signal.
其中视频处理单元 203包括：  The video processing unit 203 includes:
视频编解码单元 2031 ，用于对接收的视频信号进行编码、解码、解扰、 解复用、 模数转换等处理。 在本实施例中 ，视频编解码单元 2031可以为 CPU和 /或 GPU；  The video codec unit 2031 is configured to perform processing such as encoding, decoding, descrambling, demultiplexing, analog-to-digital conversion, and the like on the received video signal. In this embodiment, the video codec unit 2031 may be a CPU and/or a GPU;
视频亮度调节单元 2032 ,用于根据所述电信号，确定亮度调节幅值， 根据所述亮度调节幅值对接收的视频信号进行色域空间转换，输出所述转 换后视频信号至视频编解码单元 2031。 在本实施例中 ，视频亮度调节单元 2032可以为 CPU ,或者是单独的硬件模块。  The video brightness adjusting unit 2032 is configured to determine a brightness adjustment amplitude according to the electrical signal, perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude, and output the converted video signal to a video coding and decoding unit. 2031. In this embodiment, the video brightness adjustment unit 2032 may be a CPU or a separate hardware module.
本实施例中 ，视频亮度调节单元 2032接收视频编解码单元 2031经过 解码的视频传输流，对所述视频传输流进行亮度调节后，输出到视频编解 码单元 2031进行编码，以形成可以播放的视频信号。  In this embodiment, the video brightness adjustment unit 2032 receives the decoded video transmission stream of the video codec unit 2031, performs brightness adjustment on the video transmission stream, and outputs the result to the video codec unit 2031 for encoding to form a playable video. signal.
需要注意的是，所述视频信号处理装置还可以包括：光感应单元 205、 存储单元 206和高速动态存储单元 207；  It should be noted that the video signal processing apparatus may further include: a light sensing unit 205, a storage unit 206, and a high speed dynamic storage unit 207;
光感应单元 205 ,用于感应本装置所处环境的光线明暗程度，将所述 环境的光线明暗程度转化为表示环境光线明暗程度的电信号，并将所述电 信号发送给视频处理单元 203。 在本实施例中 ，光感应单元 205可为光线 感应器或摄像头；  The light sensing unit 205 is configured to sense the degree of light and darkness of the environment in which the device is located, convert the light and darkness of the environment into an electrical signal indicating the degree of light and darkness of the ambient light, and send the electrical signal to the video processing unit 203. In this embodiment, the light sensing unit 205 can be a light sensor or a camera;
所述存储单元 206 ,用于存储系统程序；  The storage unit 206 is configured to store a system program;
所述高速动态存储单元 207 ,用于存储临时数据，所述临时数据为视 频信号处理过程中的缓冲数据。  The high speed dynamic storage unit 207 is configured to store temporary data, and the temporary data is buffered data during video signal processing.
本实施例中的视频信号处理装置，通过光感应单元感应所处环境光线 明暗程度并将其转化为表示环境光线明暗程度的信号，视频处理单元获取 所述信号，并由视频处理单元中的视频亮度调节单元根据所述信号对视频 信号进行亮度调节处理，使视频画面的亮度能够与环境光线的明暗程度相 适应，从而降低视频画面与周围环境的明暗反差，减小对眼睛的伤害。 为了进一步说明本发明是如何进行视频信号处理过程的 ，如本图 3所 示，给出了本发明实施例中视频信号处理方法的流程图 ，所述方法包括以 下步骤： The video signal processing device in this embodiment senses the brightness of the ambient light by the light sensing unit and converts it into a signal indicating the degree of light and darkness of the ambient light, and the video processing unit acquires the signal and is video by the video processing unit. The brightness adjustment unit according to the signal to the video The signal is subjected to brightness adjustment processing so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the damage to the eyes. To further illustrate how the present invention performs a video signal processing process, as shown in FIG. 3, a flowchart of a video signal processing method in an embodiment of the present invention is provided. The method includes the following steps:
301、 获取电信号，所述电信号用于表示环境光线明暗程度。  301. Obtain an electrical signal, where the electrical signal is used to indicate the degree of ambient light and darkness.
302、 根据所述电信号确定亮度调节幅值；  302. Determine a brightness adjustment amplitude according to the electrical signal.
303、 根据所述亮度调节幅值对接收的视频信号进行色域空间转换，调 节视频亮度，使视频画面的亮度能够适应周围环境的明暗程度；  303. Perform color gamut space conversion on the received video signal according to the brightness adjustment amplitude, and adjust video brightness, so that the brightness of the video picture can adapt to the brightness of the surrounding environment;
304、 输出所述转换后的视频信号。  304. Output the converted video signal.
在本实施例中，通过感应环境光线明暗程度并将其转化为表示环境光 线明暗程度的电信号，并根据所述电信号对视频信号进行亮度调节处理， 使视频画面的亮度能够与环境光线的明暗程度相适应，从而降低视频画面 与周围环境的明暗反差，减小对眼睛的伤害。 为了进一步掲示本发明所提出的视频信号处理装置是如何实现的，如 图 4所示，给出了本发明实施例中视频信号处理装置的详细结构示意图。 该视频信号处理装置包括视频处理器 40和光线感应器 41 ,所述视频处理 器 40是所述视频处理单元 203的优选实施例，所述光线感应器 41是所述 光感应单元 205的优选实施例。 在本实施例中 ，视频信号处理装置接收视 频输入信号， 由视频处理器对输入信号进行编码、 解码、 解扰、 解复用、 模数转换等处理，并根据光线感应器输入的环境光线明暗程度调节输出视 频画面的亮度。 所述光线感应器 41 ,用于感应本视频信号处理装置所处环境光线明暗 程度，并将环境光线明暗程度转化为表示环境光线明暗程度的电信号发送 给视频幅度调节器 404。 电信号的格式由器件本身决定。所述电信号 （以 D 表示)与环境光线明暗程度 （以 L表示)相对应，对应关系由器件本身决定。 当所述环境光线明暗程度 L低于一定阈值 （以 LJimen表示)日寸，才启动视 频亮度调节处理，而当环境光线明暗程度 L高于此阈值时，并不进行视频 亮度调节处理。 所述阈值可在出厂时设定，也可提供用户接口 ，根据用户 的选择确定。 本实施例中 ，以所述电信号 D与所述环境光线明暗程度 L对 应关系如图 5a所示，呈线性对应。 In this embodiment, by sensing the degree of light and darkness of the ambient light and converting it into an electrical signal indicating the degree of light and darkness of the ambient light, and performing brightness adjustment processing on the video signal according to the electrical signal, the brightness of the video image can be compared with the ambient light. The degree of shading is adapted to reduce the contrast between the video and the surrounding environment, reducing the damage to the eyes. In order to further illustrate how the video signal processing apparatus proposed by the present invention is implemented, as shown in FIG. 4, a detailed structural diagram of a video signal processing apparatus in an embodiment of the present invention is shown. The video signal processing apparatus includes a video processor 40 and a light sensor 41, which is a preferred embodiment of the video processing unit 203, and the light sensor 41 is a preferred implementation of the light sensing unit 205. example. In this embodiment, the video signal processing device receives the video input signal, and the video processor encodes, decodes, descrambles, demultiplexes, and performs analog-to-digital conversion on the input signal, and the ambient light is input and received according to the light sensor. The degree adjusts the brightness of the output video screen. The light sensor 41 is configured to sense the brightness of the ambient light of the video signal processing device, and convert the ambient light brightness to an electrical signal indicating the brightness of the ambient light to the video amplitude adjuster 404. The format of the electrical signal is determined by the device itself. The electrical signal (indicated by D) corresponds to the degree of ambient light shading (indicated by L), and the correspondence is determined by the device itself. When the ambient light shading degree L is lower than a certain threshold (indicated by LJimen), the video brightness adjustment processing is started, and when the ambient light shading degree L is higher than the threshold value, the video brightness adjustment processing is not performed. The threshold can be set at the factory, or a user interface can be provided, which is determined according to the user's selection. In this embodiment, the relationship between the electrical signal D and the ambient light shading degree L is linearly corresponding as shown in FIG. 5a.
视频处理器 40 ,具体包括：  The video processor 40 specifically includes:
解扰与解复用模块 401 ,用于接收视频输入信号，并对其进行解扰与 解复用处理。 视频输入信号可以为射频信号或者网络媒体流信号，射频信 号需先经过调谐与解调处理再传给解扰与解复用模块 401。 所述解扰与解 复用模块 401与智能 /IC卡配合对接收的加扰信号进行解扰，并对解扰后的 码流进行解复用 ，获得音频传输流和视频传输流，视频传输流传输至视频 解码与处理模块 402。  The descrambling and demultiplexing module 401 is configured to receive a video input signal and perform descrambling and demultiplexing processing thereon. The video input signal may be a radio frequency signal or a network media stream signal, and the radio frequency signal is first tuned and demodulated and then transmitted to the descrambling and demultiplexing module 401. The descrambling and demultiplexing module 401 cooperates with the smart/IC card to descramble the received scrambled signal, and demultiplexes the descrambled code stream to obtain an audio transport stream and a video transport stream, and video transmission. Streaming to video decoding and processing module 402.
视频解码与处理模块 402 ,用于对其接收的来自于所述解扰与解复用 模块 401的视频传输流进行解码与视频处理。 所述视频传输流为经过压縮 的视频信号，需经解码才能进行后续视频处理，所述视频处理包括视频大 小縮放、 隔行扫描信号至逐行扫描信号的转换、 降噪等处理。 经过解码与 视频处理后的视频信号传输至时序发生器 403。  The video decoding and processing module 402 is configured to perform decoding and video processing on the video transport stream received from the descrambling and demultiplexing module 401. The video transport stream is a compressed video signal that needs to be decoded for subsequent video processing, including video size scaling, interlaced scan signal to progressive scan signal conversion, noise reduction, and the like. The decoded and video processed video signal is transmitted to the timing generator 403.
时序发生器 403 ,用于产生播放视频信号所需要的时钟参数及控制信 号，并将该时钟参数及控制信号添加到接收于所述时序发生器 403的视频 信号，并将添加了时钟参数及控制信号的视频信号传输至色域空间转换模 块 405。 The timing generator 403 is configured to generate clock parameters and control signals required for playing the video signal, and add the clock parameters and control signals to the video signal received by the timing generator 403, and add clock parameters and control The video signal of the signal is transmitted to the gamut space conversion mode Block 405.
视频幅度调节器 404，用于根据接收于光线感应器 41的表示环境光线 明暗程度的电信号确定亮度调节幅值，此亮度调节幅值大小对应于环境光 线明暗程度。 视频幅度调节器 404将所述亮度调节幅值传输至色域空间转 换模块 405。  The video amplitude adjuster 404 is configured to determine a brightness adjustment amplitude according to an electrical signal received by the light sensor 41 indicating the degree of brightness of the ambient light, the brightness adjustment amplitude corresponding to the brightness of the ambient light. Video amplitude adjuster 404 transmits the brightness adjustment amplitude to color gamut spatial conversion module 405.
本实施例中 ，视频幅度调节器 404根据光线感应器 41传送来的电信号 D来确定适当的亮度调节幅值 aR、 ae、 &8值，其对应关系如图 5b所示，当 电信号 D小于等于 0.2 DJJmen时，确定 aR、 aG、 aB值为 0.2 , 当电信号 D大于 0.2 DJJmen小于等于 0.4 DJJmen时，确定 aR、 aG , aB值为 0.2 , 当电信号 D大于 0.4 DJJmen小于等于 0.6 DJJmen时，确定 aR、 aG、 aB值 为 0.4 , 当电信号 D大于 0.6 DJJmen小于等于 0.8 DJJmen日寸，确定 aR、 aG , aB值为 0.6，当电信号 D大于 0.8 DJJmen小于等于 DJJmen日寸， 确定 aR、 aG , aB值为 0.8。 当电信号大于 DJJmen 时候 ， 确定确定 aR、 ae、 aB值为 1。通过所述对应关系将亮度调节幅值确定为五级 ^ 0.2、 0.4、 0.6、 0.8、 1.0 ,分别对应于其相应的环境光线明暗程度。 In this embodiment, the video amplitude adjuster 404 determines an appropriate brightness adjustment amplitude a R , a e , and 8 according to the electrical signal D transmitted by the light sensor 41, and the corresponding relationship is as shown in FIG. 5b. When the signal D is less than or equal to 0.2 DJJmen, it is determined that the values of a R , a G and a B are 0.2. When the electrical signal D is greater than 0.2 DJJmen is less than or equal to 0.4 DJJmen, it is determined that a R , a G , a B value is 0.2, when the electrical signal When D is greater than 0.4 DJJmen is less than or equal to 0.6 DJJmen, it is determined that a R , a G , and a B are 0.4. When the electrical signal D is greater than 0.6 DJJmen is less than or equal to 0.8 DJJmen, the a R , a G , and a B values are determined to be 0.6. When the electrical signal D is greater than 0.8 DJJmen is less than or equal to DJJmen, the a R , a G , and a B values are determined to be 0.8. When the electrical signal is greater than DJJmen, it is determined that the values of a R , a e , and a B are 1. The brightness adjustment amplitude is determined by the corresponding relationship as five levels ^ 0.2, 0.4, 0.6, 0.8, 1.0, respectively corresponding to their respective ambient light shading levels.
色域空间转换模块 405 ,用于根据所述亮度调节幅值对接收自视频编 解码单元的视频信号进行色域空间转换，输出所述转换后视频信号至视频 编解码单元。 在本实施例中 ，色域空间转换模块 405接收来自于视频幅度 调节器 404的对于应环境光线明暗程度的亮度调节幅值，根据所述亮度调 节幅值对接收于时序发生器 403的视频信号进行 RGB色域空间与 YUV色 域空间之间的转换，并将经过色域空间转换之后的视频信号传输至视频编 码器 406。  The gamut space conversion module 405 is configured to perform color gamut spatial conversion on the video signal received from the video coding and decoding unit according to the brightness adjustment amplitude, and output the converted video signal to the video coding and decoding unit. In this embodiment, the color gamut space conversion module 405 receives the brightness adjustment amplitude from the video amplitude adjuster 404 for the degree of ambient light shading, and adjusts the amplitude to the video signal received by the timing generator 403 according to the brightness adjustment amplitude. The conversion between the RGB gamut space and the YUV gamut space is performed, and the video signal after the gamut space conversion is transmitted to the video encoder 406.
本实施例中 ，色域空间转换模块 405负责完成视频信号在 RGB色域空 间与 YCbCr色域空间之间的转换，根据 Rec.ITU-R BT.601规定，从 Studio RGB至 YCbCr的转换方法为 In this embodiment, the gamut space conversion module 405 is responsible for completing the conversion of the video signal between the RGB gamut space and the YCbCr gamut space, according to Rec. ITU-R BT.601, from Studio. The conversion method of RGB to YCbCr is
0.299 0.584 0.114  0.299 0.584 0.114
-0.172 -0.339 0.511 -0.172 -0.339 0.511
Figure imgf000012_0001
0.511 -0.428 -0.083
Figure imgf000012_0002
Figure imgf000012_0001
0.511 -0.428 -0.083
Figure imgf000012_0002
为了实现视频信号的亮度调节，我们在上述 RGB色域空间与 YCbCr 色域空间之间的转换过程中加入了亮度调节幅值，实现了视频亮度调节的 色域空间转换方法为 ：  In order to realize the brightness adjustment of the video signal, we added the brightness adjustment amplitude in the conversion process between the above RGB gamut space and the YCbCr gamut space, and the gamut space conversion method for realizing the video brightness adjustment is:
0.299 0.584 0.114 — aR * R219— 0.299 0.584 0.114 — a R * R219—
-0.172 -0.339 0.511 - aG * G219-0.172 -0.339 0.511 - a G * G219
Figure imgf000012_0003
0.511 -0.428 -0.083 - aB • B219- 即对应 R、 B、 G每个颜色分量乘以一个亮度调节幅值 aR、 ae、 aB ,使 各个颜色分量的值发生变化，以对应环境光线明暗程度。 通过所述转换使 视频画面的亮度与环境光线明暗程度相适应，减小了环境视频画面与环境 亮度的反差，从而减小了对人眼的伤害。 视频编码器 406 ,用于接收来自于所述色域空间转换模块 405的视频 信号，对其进行编码处理，形成能够用于播放的视频信号。 对应于图 2中的视频处理单元 203 ,本实施例中 ，所述视频处理器 40 也分为视频编解码单元和视频亮度调节单元，如图 4中所示，视频编解码 单元包括解扰与解复用模块 401、 视频解码与处理模块 402、 时序发生器 403、 视频编码器 406 ,视频亮度调节单元包括视频幅度调节器 404、 色域 空间转换模块 405。 所述经过亮度调节处理的视频信号用于传输至视频播放装置进行播放， 或传输至其他视频处理系统进行进一步处理。 本实施例中的视频信号处理装置，通过解扰与解复用模块对输入的视 频源信号进行解码解复用并传输至视频解码与处理模块，视频解码与处理 模块对所述视频信号进行解码和降噪、 视频縮放等处理，并将处理后的视 频信号传输至时序发生器，时序发生器向视频信号中添加时钟参数及控制 信号，并传输给色域空间转换模块，色域空间转换模块根据接收自视频幅 度调节器的表示环境光线明暗程度的信号对接收自时序发生器的视频信号 进行亮度调节处理，使视频画面的亮度能够与环境光线的明暗程度相适应， 从而降低视频画面与周围环境的明暗反差，减小对眼睛的伤害。 为了进一步掲示本发明所提出的技术方案，如图 6所示，给出了本发 明实施例中视频信号处理方法的详细流程图 ，此方法流程对应于图 4的视 频信号处理装置的结构组成，其中各步骤的详细处理过程由图 4中的对应 各模块完成。 具体步骤为 ：
Figure imgf000012_0003
0.511 -0.428 -0.083 - a B • B 219- That is, each color component corresponding to R, B, and G is multiplied by a brightness adjustment amplitude a R , a e , a B , so that the values of the respective color components are changed to correspond The degree of light and darkness of the ambient light. Through the conversion, the brightness of the video picture is adapted to the brightness of the ambient light, which reduces the contrast between the ambient video picture and the ambient brightness, thereby reducing the damage to the human eye. The video encoder 406 is configured to receive a video signal from the color gamut space conversion module 405, and perform encoding processing to form a video signal that can be used for playing. Corresponding to the video processing unit 203 in FIG. 2, in the embodiment, the video processor 40 is also divided into a video encoding and decoding unit and a video brightness adjusting unit. As shown in FIG. 4, the video encoding and decoding unit includes descrambling and The demultiplexing module 401, the video decoding and processing module 402, the timing generator 403, the video encoder 406, and the video brightness adjusting unit include a video amplitude adjuster 404 and a color gamut space conversion module 405. The brightness adjusted video signal is used for transmission to a video playback device for playback, or to other video processing systems for further processing. The video signal processing apparatus in this embodiment decodes and demultiplexes the input video source signal by the descrambling and demultiplexing module, and transmits the video source signal to the video decoding and processing module, and the video decoding and processing module decodes the video signal. And noise reduction, video scaling, etc., and will treat the view The frequency signal is transmitted to the timing generator, and the timing generator adds a clock parameter and a control signal to the video signal, and transmits the signal to the color gamut space conversion module, and the color gamut space conversion module according to the brightness of the ambient light received by the video amplitude adjuster The signal is subjected to brightness adjustment processing on the video signal received from the timing generator, so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the damage to the eyes. In order to further illustrate the technical solution proposed by the present invention, as shown in FIG. 6, a detailed flowchart of a video signal processing method in an embodiment of the present invention is provided. The method flow corresponds to the structural composition of the video signal processing apparatus of FIG. The detailed processing of each step is completed by the corresponding modules in FIG. The specific steps are:
601、获取视频信号，所述视频信号可以为射频信号或者网络媒体流信 号，射频信号需先经过调谐与解调处理；  601. Acquire a video signal, where the video signal may be a radio frequency signal or a network media stream signal, and the radio frequency signal needs to be subjected to tuning and demodulation processing;
602、 对视频信号进行解扰与解复用处理。 在本实施例中，对获取的所 述视频信号进行解扰与解复用处理，以获得音频传输流和视频传输流； 602. Perform descrambling and demultiplexing processing on the video signal. In this embodiment, the obtained video signal is descrambled and demultiplexed to obtain an audio transport stream and a video transport stream;
603、 对获得的视频传输流进行视频解码与处理。 在本实施例中，将获 得的视频传输流进行视频解码及视频大小縮放、 隔行扫描信号至逐行扫描 信号的转换、 降噪等视频处理； 603. Perform video decoding and processing on the obtained video transport stream. In this embodiment, the obtained video transmission stream is subjected to video decoding and video size scaling, interlaced scanning signal to progressive scan signal conversion, noise reduction, and the like;
604、 对解码后的视频信号添加时钟参数和控制信号。 在本实施例中 ， 对经过视频解码与处理后的视频信号添加播放该视频信号所需要的时钟参 数及控制信号；  604. Add a clock parameter and a control signal to the decoded video signal. In this embodiment, a clock parameter and a control signal required for playing the video signal are added to the video signal after the video decoding and processing;
605、 感应所处环境光线明暗程度，并将所处环境光线明暗程度转化为 能表示环境光线明暗程度的电信号；  605, sensing the degree of light and darkness of the ambient light, and converting the degree of light and darkness of the ambient light into an electrical signal capable of indicating the degree of light and darkness of the ambient light;
本实施例中 ，当所述环境光线明暗程度 L低于一定阈值时，启动视频 亮度调节处理，而当环境光线明暗程度 L高于此阈值时，并不进行视频亮 度调节处理。 所述阈值可在出厂时设定，也可提供用户接口 ，根据用户的 选择确定。 启动所述视频亮度调节处理后，首先根据接收到的电信号 D判 断对应的环境光线明暗程度。 In this embodiment, when the ambient light brightness degree L is lower than a certain threshold, the video brightness adjustment process is started, and when the ambient light brightness degree L is higher than the threshold, the video is not bright. Degree adjustment processing. The threshold can be set at the factory, or a user interface can be provided, which is determined according to the user's selection. After the video brightness adjustment process is started, the corresponding ambient light brightness level is first determined according to the received electrical signal D.
606、 根据所述电信号确定亮度调节幅值。在本实施例中 ，根据接收的 电信号来决定视频亮度调节的亮度调节幅值，此亮度调节幅值大小对应于 环境光线明暗程度；  606. Determine a brightness adjustment amplitude according to the electrical signal. In this embodiment, the brightness adjustment amplitude of the brightness adjustment of the video is determined according to the received electrical signal, and the brightness adjustment amplitude corresponds to the brightness of the ambient light;
本实施例中 ，根据电信号 D来确定适当的亮度调节幅值 aR、 ae、 aB值， 其对应关系如图 5b所示，当电信号 D小于等于 0.2 DJJmen 时，确定 aR、 aG、 aB值为 0.2，当电信号 D大于 0.2 DJJmen小于等于 0.4 DJJmen 时，确定 aR、 aG、 aB值为 0.2 ,当电信号 D大于 0.4 DJJmen小于等于 0.6 DJJmen时，确定 aR、 aG , aB值为 0.4 ,当电信号 D大于 0.6 DJJmen小 于等于 0.8 DJJmen时，确定 aR、 aG、 aB值为 0.6 ,当电信号 D大于 0.8 DJJmen小于等于 DJJmen时，确定 aR、 aG、 aB值为 0.8。 当电信号大于 DJJmen时候，确定确定 aR、 aG , aB值为 1。 通过所述对应关系将亮度调 节幅值确定为五级，即 0.2、 0.4、 0.6、 0.8、 1.0 ,分别对应于其相应的环 境光线明暗程度。 In this embodiment, the appropriate brightness adjustment amplitudes a R , a e , a B are determined according to the electrical signal D, and the corresponding relationship is as shown in FIG. 5b. When the electrical signal D is less than or equal to 0.2 DJJmen, a R is determined. a G , a B value is 0.2, when the electrical signal D is greater than 0.2 DJJmen is less than or equal to 0.4 DJJmen, it is determined that a R , a G , a B value is 0.2, when the electrical signal D is greater than 0.4 DJJmen is less than or equal to 0.6 DJJmen, determine a R , a G , a B value is 0.4. When the electrical signal D is greater than 0.6 DJJmen is less than or equal to 0.8 DJJmen, it is determined that a R , a G , and a B are 0.6. When the electrical signal D is greater than 0.8 DJJmen is less than or equal to DJJmen, it is determined. a R , a G , a B value is 0.8. When the electrical signal is greater than DJJmen, it is determined that a R , a G , a B value is 1. The brightness adjustment amplitude is determined to be five levels by the correspondence relationship, that is, 0.2, 0.4, 0.6, 0.8, and 1.0, respectively corresponding to their respective ambient light shading degrees.
607、根据亮度调节幅值对视频信号进行亮度调节处理。在本实施例中 ， 根据该亮度调节幅值将所述加了时钟参数和控制信号的视频信号进行 RGB 色域空间与 YCbCr色域空间之间的转换；  607. Perform brightness adjustment processing on the video signal according to the brightness adjustment amplitude. In this embodiment, the video signal with the clock parameter and the control signal is converted between the RGB gamut space and the YCbCr gamut space according to the brightness adjustment amplitude;
本实施例中 ， RGB色域空间与 YCbCr色域空间之间的转换是根据下 面的公式完成的， Rec.lTU-R BT.601规定，从 Studio RGB至 YCbCr的 转换方法为
Figure imgf000014_0002
Figure imgf000014_0001
Figure imgf000014_0003
为了实现视频信号的亮度调节，我们在上述 RGB色域空间与 YCbCr 色域空间之间的转换过程中加入了亮度调节幅值，实现了视频亮度调节的 色域空间转换方法为 ： In this embodiment, the conversion between the RGB gamut space and the YCbCr gamut space is performed according to the following formula. Rec.lTU-R BT.601 specifies that the conversion method from Studio RGB to YCbCr is
Figure imgf000014_0002
Figure imgf000014_0001
Figure imgf000014_0003
In order to realize the brightness adjustment of the video signal, we added the brightness adjustment amplitude in the conversion process between the above RGB gamut space and the YCbCr gamut space, and the gamut space conversion method for realizing the video brightness adjustment is:
0.299 0.584 0.114 — aR * R219— 0.299 0.584 0.114 — a R * R219—
-0.172 -0.339 0.511 - aG * G219-0.172 -0.339 0.511 - a G * G219
Figure imgf000015_0001
0.511 -0.428 -0.083 - aB • B219- 即对应 R、 B、 G每个颜色分量乘以一个亮度调节幅值 aR、 ae、 aB ,使 各个颜色分量的值发生变化，以对应环境光线明暗程度。
Figure imgf000015_0001
0.511 -0.428 -0.083 - a B • B 219- That is, each color component corresponding to R, B, and G is multiplied by a brightness adjustment amplitude a R , a e , a B , so that the values of the respective color components are changed to correspond The degree of light and darkness of the ambient light.
608、 对经过亮度调节的视频信号进行编码。 在本实施例中 ，对经过色 域空间转换之后的信号进行编码处理，形成能够用于播放的视频信号； 608. Encode the brightness adjusted video signal. In this embodiment, the signal after the color space conversion is subjected to encoding processing to form a video signal that can be used for playing;
609、视频输出 ，将处理完毕的视频信号传输至视频播放装置进行播放， 或传输至其他视频信号处理系统进行进一步处理。 本发明实施例通过对输入的视频源信号进行解码解复用 ，得到视频传 输流和音频传输流，再对视频传输流进行解码和降噪、 视频縮放等视频处 理，并添加时钟参数及控制信号，再根据表示环境光线明暗程度的信号对 该视频信号进行亮度调节处理，使视频画面的亮度能够与环境光线的明暗 程度相适应，从而降低视频画面与周围环境的明暗反差，减小对眼睛的伤 609. Video output, the processed video signal is transmitted to a video playback device for playback, or transmitted to other video signal processing systems for further processing. In the embodiment of the present invention, a video transmission stream and an audio transmission stream are obtained by decoding and demultiplexing the input video source signal, and then decoding, noise reduction, video scaling, and the like are performed on the video transmission stream, and clock parameters and control signals are added. And then adjusting the brightness of the video signal according to the signal indicating the degree of brightness of the ambient light, so that the brightness of the video picture can be adapted to the brightness of the ambient light, thereby reducing the contrast between the video picture and the surrounding environment, and reducing the brightness of the eye. Injury
实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件 来完成，所述的程序可以存储于一计算机可读取存储介质中 ，该程序在执 行时，执行包括上述方法实施例的步骤；而所述的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。 以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并 不局限于此，任何熟悉本技术领域的技术人员在本发明掲露的技术范围内 可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。 因此，本 发明的保护范围应该以权利要求的保护范围为准。 All or part of the steps of implementing the above method embodiments may be performed by hardware related to the program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments. The storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk. The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art is within the technical scope of the present invention. Variations or substitutions that are conceivable are intended to be encompassed within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

权利要求 Rights request
1. 一种视频信号的处理方法，其特征在于，包括： A method for processing a video signal, comprising:
获取电信号，所述电信号用于表示环境光线明暗程度；  Obtaining an electrical signal, the electrical signal being used to indicate the degree of ambient light and darkness;
根据所述电信号确定亮度调节幅值；  Determining a brightness adjustment amplitude according to the electrical signal;
根据所述亮度调节幅值对接收的视频信号进行色域空间转换； 输出所述转换后的视频信号。  And performing color gamut space conversion on the received video signal according to the brightness adjustment amplitude; and outputting the converted video signal.
2. 根据权利要求 1所述的视频信号的处理方法，其特征在于，所述确 定亮度调节幅值的的方法为 ：  2. The method of processing a video signal according to claim 1, wherein the method of determining a brightness adjustment amplitude is:
所述亮度调节幅值与所述电信号分区间线性对应。  The brightness adjustment amplitude linearly corresponds to the electrical signal partition.
3. 根据权利要求 1或 2所述的视频信号的处理方法，其特征在于，所 述亮度调节幅值包含三个分量， 分别对应视频信号在 RGB色域空间的 R、 G、 B颜色分量。  The method of processing a video signal according to claim 1 or 2, wherein the brightness adjustment amplitude comprises three components respectively corresponding to R, G, B color components of the video signal in the RGB gamut space.
4. 根据权利要求 1至 3任一所述的视频信号的处理方法其特征在于， 所述色域空间转换为在 RGB色域空间与 YCbCr色域空间之间的转换。  The method of processing a video signal according to any one of claims 1 to 3, wherein the color gamut space is converted into a conversion between an RGB gamut space and a YCbCr gamut space.
5. 根据权利要求 1至 4任一所述的视频信号的处理方法其特征在于， 所述色域空间转换通过公式 实现
Figure imgf000017_0001
The method for processing a video signal according to any one of claims 1 to 4, wherein the color gamut space conversion is implemented by a formula
Figure imgf000017_0001
其中 ： among them :
Y'表示视频信号在 YCbCr色域空间的 Y分量；  Y' represents the Y component of the video signal in the YCbCr color gamut space;
CB '表示视频信号在 YCbCr色域空间的 CB分量； C B ' represents the C B component of the video signal in the YCbCr gamut space;
CR '表示视频信号在 YCbCr色域空间的 CR分量； aR表示对应于 R颜色分量的亮度调节幅值； C R ' represents the C R component of the video signal in the YCbCr gamut space; a R represents a brightness adjustment amplitude corresponding to the R color component;
ae表示对应于 G颜色分量的亮度调节幅值； a e represents the brightness adjustment amplitude corresponding to the G color component;
aB表示对应于 B颜色分量的亮度调节幅值； a B represents the brightness adjustment amplitude corresponding to the B color component;
R219表示视频信号在 RGB色域空间的 R分量； R 219 represents the R component of the video signal in the RGB gamut space;
G219表示视频信号在 RGB色域空间的 G分量； G 219 represents the G component of the video signal in the RGB gamut space;
B219表示视频信号在 RGB色域空间的 B分量。 B 219 represents the B component of the video signal in the RGB gamut space.
6. —种视频信号处理装置，其特征在于，包括电信号获取单元、 输入 单元、 视频处理单元、 输出单元；  6. A video signal processing apparatus, comprising: an electrical signal acquisition unit, an input unit, a video processing unit, and an output unit;
所述电信号获取单元用于获取表示环境光线明暗程度的电信号，并发 送给所述视频处理单元；  The electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of brightness of the ambient light, and send the signal to the video processing unit;
所述输入单元用于向所述视频处理单元输入视频信号；  The input unit is configured to input a video signal to the video processing unit;
所述视频处理单元用于根据所述电信号确定亮度调节幅值，并根据所 述亮度调节幅值对接收的视频信号进行色域空间转换；  The video processing unit is configured to determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut space conversion on the received video signal according to the brightness adjustment amplitude;
所述输出单元用于输出所述色域空间转换后视频信号。  The output unit is configured to output the color gamut spatially converted video signal.
7. 根据权利要求 6所述的视频信号处理装置，其特征在于，还包括光 线感应单元，所述光感应单元用于感应环境光线明暗程度，将其转化为表 示环境光线明暗程度的电信号，并将其发送给所述电信号获取单元。  7. The video signal processing apparatus according to claim 6, further comprising a light sensing unit, wherein the light sensing unit is configured to sense an ambient light level and convert it into an electrical signal indicating a degree of ambient light shading. And sending it to the electrical signal acquisition unit.
8. 根据权利要求 7所述的视频信号处理装置，其特征在于，所述光感 应单元为光线感应器或者摄像头。  8. The video signal processing apparatus according to claim 7, wherein the light sensing unit is a light sensor or a camera.
9. 根据权利要求 6至 8任一所述的视频信号处理装置，其特征在于， 所述视频处理单元包括视频编解码单元和视频亮度调节单元；  The video signal processing apparatus according to any one of claims 6 to 8, wherein the video processing unit comprises a video codec unit and a video brightness adjustment unit;
所述视频编解码单元用于对接收的视频信号进行处理，所述处理包括 编码、 解码、 解扰、 解复用、 模数转换；  The video codec unit is configured to process the received video signal, where the processing includes encoding, decoding, descrambling, demultiplexing, and analog to digital conversion;
所述视频亮度调节单元用于根据所述电信号，确定亮度调节幅值，根 据所述亮度调节幅值对接收的视频信号进行色域空间转换，输出所述转换 后视频信号至视频编解码单元。 The video brightness adjustment unit is configured to determine a brightness adjustment amplitude according to the electrical signal, And performing color gamut space conversion on the received video signal according to the brightness adjustment amplitude, and outputting the converted video signal to the video codec unit.
10.根据权利要求 9所述的视频信号处理装置，其特征在于，所述视频 亮度调节单元包括视频幅度调节器和色域空间转换模块；  The video signal processing apparatus according to claim 9, wherein the video brightness adjustment unit comprises a video amplitude adjuster and a color gamut space conversion module;
所述视频幅度调节器用于根据所述电信号，确定亮度调节幅值； 所述色域空间转换模块用于根据所述亮度调节幅值对接收自视频编解 码单元的视频信号进行色域空间转换，输出所述转换后视频信号至视频编 解码单元。  The video amplitude adjuster is configured to determine a brightness adjustment amplitude according to the electrical signal; the color space conversion module is configured to perform color space conversion on a video signal received from a video codec unit according to the brightness adjustment amplitude And outputting the converted video signal to a video codec unit.
11.根据权利要求 9或 10所述的视频信号处理装置，其特征在于所述视 频亮度调节单元为 CPU或者单独硬件模块。  A video signal processing apparatus according to claim 9 or 10, wherein said video brightness adjustment unit is a CPU or a separate hardware module.
12.—种视频信号处理系统，其特征在于，包括：输入装置、 视频处理 装置 、 输出装置、 光感应单元；  12. A video signal processing system, comprising: an input device, a video processing device, an output device, and a light sensing unit;
所述输入模块，用于向所述视频信号处理装置输入视频信号； 所述视频处理装置用于对接收于输入模块的视频信号进行亮度调节处 理，并将经过亮度调节处理的视频信号发送到输出模块，所述视频处理装 置包括电信号获取单元、 输入单元、 视频处理单元、 输出单元，其中 ： 所述电信号获取单元用于获取表示环境光线明暗程度的电信号，并发 送给所述视频处理单元；  The input module is configured to input a video signal to the video signal processing device; the video processing device is configured to perform brightness adjustment processing on the video signal received by the input module, and send the video signal subjected to the brightness adjustment processing to the output a module, the video processing device includes an electrical signal acquisition unit, an input unit, a video processing unit, and an output unit, wherein: the electrical signal acquisition unit is configured to acquire an electrical signal indicating a degree of ambient light shading, and send the signal to the video processing Unit
所述输入单元用于向所述视频处理单元输入视频信号；  The input unit is configured to input a video signal to the video processing unit;
所述视频处理单元用于接收所述电信号，根据所述电信号确定亮度调 节幅值，并根据所述亮度调节幅值对接收的视频信号进行色域空间转换； 所述输出单元用于输出所述色域空间转换后视频信号。  The video processing unit is configured to receive the electrical signal, determine a brightness adjustment amplitude according to the electrical signal, and perform color gamut spatial conversion on the received video signal according to the brightness adjustment amplitude; the output unit is configured to output The color gamut space converted video signal.
所述输出装置用于输出经过亮度调节处理的视频信号。  The output device is configured to output a video signal subjected to brightness adjustment processing.
所述光感应单元用于光感应单元用于感应环境光线明暗程度，将其转 化为表示环境光线明暗程度的电信号，并将其发送给所述电信号获取单元。The light sensing unit is used by the light sensing unit to sense the brightness of the ambient light and turn it It is converted into an electrical signal indicating the degree of light and darkness of the ambient light, and is sent to the electrical signal acquisition unit.
13.根据权利要求 12所述的视频信号处理系统，其特征在于，所述光感 应单元集成在所述视频处理装置中。 13. A video signal processing system according to claim 12 wherein said light sensing unit is integrated in said video processing device.
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