WO2012130181A1 - 视频图像显示的方法和装置 - Google Patents
视频图像显示的方法和装置 Download PDFInfo
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- WO2012130181A1 WO2012130181A1 PCT/CN2012/073463 CN2012073463W WO2012130181A1 WO 2012130181 A1 WO2012130181 A1 WO 2012130181A1 CN 2012073463 W CN2012073463 W CN 2012073463W WO 2012130181 A1 WO2012130181 A1 WO 2012130181A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/272—Means for inserting a foreground image in a background image, i.e. inlay, outlay
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- 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
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- 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
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- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management e.g. creating a master electronic programme guide from data received from the Internet and a Head-end or controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4621—Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/045—Zooming at least part of an image, i.e. enlarging it or shrinking it
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0464—Positioning
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
-
- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
Definitions
- the present invention relates to the field of video display, and in particular, to a method and apparatus for displaying video images. Background technique
- a basic function of a video explicit system is the acquisition and display of video images.
- the receiving device receives the video compressed code stream, decodes the video compressed code stream to obtain a video image, and then outputs the video image to the display device for display.
- the foreground image in the video image such as the face area, may be reduced or enlarged depending on the size and resolution of the display. Since the display device is usually installed by the user, the size and resolution of the display device of different sites may be different, and the foreground image may have different zoom effects.
- the foreground image of the same life size is a real person when displayed on a 52-inch display device, and it feels very real; if the foreground image is displayed on a 62-inch display device, It is felt that the foreground image is obviously enlarged; if the video image is presented on a 42-inch display device, the foreground image is obviously reduced.
- the foreground image in the video image is reduced or enlarged to different extents when displayed on display devices of different sizes and resolutions, and it is difficult to present in a constant size, so that there is a certain The degree of distortion.
- embodiments of the present invention provide a method and apparatus for video image display.
- the technical solution is as follows:
- a method of displaying a video image comprising:
- the foreground information includes a size of the foreground picture; determining, according to the size of the foreground picture, the size and resolution of the display device, and a preset adjustment rule, determining the foreground picture a coefficient, wherein the adjustment rule is that a product of an adjustment coefficient of the foreground picture and a scaling factor of the display device is equal to a fixed constant;
- An apparatus for displaying a video image comprising: an acquisition module, a determination module, and an adjustment and output module;
- the acquiring module is configured to acquire foreground information of a video image to be output, where the foreground information includes a size of a foreground image;
- the determining module is configured to determine an adjustment coefficient of the foreground picture according to a size of the foreground picture, a size and a resolution of the display device, and a preset adjustment rule, where the adjustment rule is the foreground picture
- the product of the adjustment factor and the scaling factor when the display device is displayed is equal to a fixed constant
- the adjustment and output module is configured to adjust the video image to be output according to an adjustment coefficient of the foreground picture, and output the adjusted video image to the display device for display.
- the foreground by acquiring the foreground information of the video image according to the size of the foreground picture, the size and resolution of the display device, and the adjustment rule that the adjustment coefficient of the foreground picture and the scaling factor of the display device are equal to a fixed constant
- the adjustment coefficient of the screen, the video image is adjusted according to the adjustment coefficient, and then output to the display device for display, so that the foreground image that is enlarged at the time of display is reduced at the time of adjustment, and the foreground image that is reduced when displayed is enlarged at the time of adjustment.
- the foreground picture can be rendered in a constant size when it is finally displayed.
- FIG. 1 is a flowchart of a method for displaying a video image according to an embodiment of the present invention
- FIG. 2 is a flow chart of a method for displaying a video image according to another embodiment of the present invention
- FIG. 3 is a flowchart of a method for displaying a video image according to another embodiment of the present invention
- FIG. 4 is another embodiment of the present invention
- FIG. 4 is a schematic structural diagram of another video image display device according to another embodiment of the present invention.
- FIG. 4-b is a schematic structural diagram of another apparatus for displaying video images according to another embodiment of the present invention.
- an embodiment of the present invention provides a video image display method, which may be performed by a receiving device, where the method includes:
- the product of the size of the foreground picture, the size and resolution of the display device, and the adjustment coefficient of the foreground picture and the scaling factor when the display device is displayed are equal to a fixed constant adjustment rule.
- FIG. 2 another embodiment of the present invention provides a video image display method, which may be performed by a receiving device, where the method includes:
- the horizontal resolution and the vertical resolution of the video image are Wl and Hl, respectively.
- the foreground picture includes a face area or a motion area.
- the first method is that the transmitting end sends the foreground information of the video image along with the code stream of the video image to the receiving end, so the receiving end directly extracts the video image from the code stream sent by the transmitting end.
- Prospect information The second method is that the receiving end uses the foreground intelligent detection algorithm to detect the foreground image from the video image, and determines the corresponding foreground information according to the foreground image.
- the foreground intelligent detection algorithm may be a face area detection algorithm or a motion area detection algorithm, and both of the algorithms are prior art, and are not described herein again.
- the size of the foreground picture includes width and height information.
- the reference point of the foreground picture can be any point in the foreground picture, for example, the top left corner of the foreground picture.
- the foreground image is a face region.
- the width of the face region is ⁇ _ &06, and the height is H_face.
- the reference point of the face region is the upper left corner of the face region, and the upper left corner of the face region.
- the position of the corner vertex relative to the top left vertex of the video image includes a left offset LeftOffset and an upper offset TopOffset.
- the preset adjustment rule is: The product between the adjustment coefficient of the foreground picture and the zoom factor when the display device is displayed is equal to a fixed constant. That is, if the foreground picture is enlarged when the display corresponding to the size and resolution is displayed, the size of the foreground picture is reduced, and if the foreground picture is reduced when the display corresponding to the size and resolution is displayed, the foreground picture is The size is enlarged.
- the fixed constant is equal to 1
- the adjusted foreground picture can be displayed in the original size on different display devices.
- the fixed constant is equal to a value other than 1
- the adjusted foreground picture can be in a constant size on different display devices. display.
- the adjustment coefficients of the foreground picture include: an adjustment coefficient of the foreground picture width and an adjustment coefficient of the foreground picture height, which may be equal or unequal.
- the adjustment coefficient of the foreground picture can be determined, thereby determining the adjusted person.
- the size of the face area in order to save the calculation time during the adjustment, an adjustment relationship table between the size and resolution of the display device and the size of the adjusted face region may be set in advance, and when the size of the foreground image is adjusted, You can find the adjustment relationship table to directly determine the size of the foreground image corresponding to the size and resolution of the display device.
- the adjustment relationship table shown in Table 1 If the display device is 52 inches and the display device resolution is 1280x720, then for the face areas of sizes ⁇ _ &06 and 11_ &06, the adjusted face area The width and height corresponding to the size are Face_Wl 1, Face_Hl 1, respectively. Display device scale display device area size after adjustment of device resolution (width / inch height)
- the size of the adjusted background image the size of the background image before the adjustment X
- the adjustment factor of the foreground image Take the above foreground picture as a face area as an example:
- the width of the adjusted background image W2 W1 X Scale_W;
- the adjusted background picture is processed such that the size of the adjusted background picture is equal to the product of the size of the background picture before the adjustment and the fixed constant.
- the adjusted background picture is cut, so that the size of the adjusted background picture is equal to the size of the background picture before the adjustment and The product of the fixed constant; if the size of the adjusted background picture is equal to the product of the size of the background image before adjustment and the fixed constant, no processing; if the size of the adjusted background picture is smaller than the size of the background picture before adjustment and the fixed The product of the constant, fills the adjusted background image, so that the size of the adjusted background image is equal to the product of the size of the background image before adjustment and the fixed constant.
- the embodiment does not limit the filling method.
- the filling method may be a left and right expansion filling method, a left and right mirror filling method, a monotone filling method, a background image filling method,
- the height and width of the background image are the same, and are not described here.
- Adjust the position of the reference point of the foreground picture according to the adjustment coefficient of the foreground picture; specifically, the position of the reference point of the adjusted foreground picture the position of the reference point of the foreground picture before the adjustment X the adjustment coefficient of the foreground picture .
- the above foreground picture Take the above foreground picture as a face area as an example:
- Left offset of the top left corner of the adjusted face area LeftOffset2 LeftOffset Scale_W;
- the product between the adjustment coefficient of the foreground picture and the zoom factor displayed by the display device is equal to a fixed constant. Therefore, if the superimposed picture is enlarged when the display device performs display, the foreground picture is The adjustment will be reduced, so the final display result of the foreground picture can be presented in a constant size.
- the fixed constant 1
- the final display result of the foreground picture can be rendered in the original size; otherwise, if the superimposed picture is on the display device
- the foreground picture is enlarged when it is adjusted, so the final display result of the foreground picture can be presented in a constant size.
- the video image to be output is a specified screen.
- the specified screen can be specified manually. It can also be specified periodically, or it can be specified by the sender.
- Determine the adjustment parameters by specifying the screen.
- the adjustment parameters include: the adjustment factor of the foreground picture, and the cut/fill position parameter of the background.
- Each frame of the video image received by the receiving end is resized according to the adjustment parameters of the specified screen, and superimposed, and the superimposed screen is output to the display device for display.
- the product of the size of the foreground picture, the size and resolution of the display device, and the adjustment coefficient of the foreground picture and the scaling factor when the display device is displayed are equal to a fixed constant adjustment rule.
- FIG. 3 another embodiment of the present invention provides a video image display method, which may be performed by a receiving device, where the method includes:
- This step is the same as step 101, and will not be described here.
- the foreground information of the video image is obtained, and the foreground information includes the size of the foreground image.
- the method for obtaining the foreground information in this step is the same as step 102, and details are not described herein again.
- the content of the foreground information in this step is different from the content of the foreground information in step 102.
- This step is the same as step 103, and is not described here.
- the size of the adjusted video image the size of the video image before adjustment X
- processing the adjusted video image to adjust the size of the video image It is equal to the product of the size of the video image before adjustment (ie, the video image to be output) and the fixed constant. Specifically, if the size of the adjusted video image is larger than the product of the size of the video image before the adjustment and the fixed constant, the adjusted video image is cut, so that the size of the adjusted video image is equal to the size of the video image before the adjustment.
- the product of the fixed constant if the size of the adjusted video image is equal to the product of the size of the video image before adjustment and the fixed constant, no processing; if the size of the adjusted video image is smaller than the size of the video image before adjustment and a fixed constant
- the product is filled with the adjusted video image so that the size of the adjusted video image is equal to the product of the size of the video image before the adjustment and the fixed constant.
- the filling mode may be left and right expansion. Fill mode, left and right mirror fill mode, monotone fill mode, background image fill mode, etc.
- the product between the adjustment coefficient of the foreground picture and the zoom factor displayed by the display device is equal to a fixed constant, so if the adjusted video image is enlarged when displayed on the display device, the foreground picture It will be reduced when adjusting, so the final display result of the foreground picture can be presented in a constant size.
- the fixed constant 1
- the final display result of the foreground picture can be rendered in the original size; otherwise, if the adjusted video image is When the display device is displayed, it is zoomed out, and the foreground image is enlarged when it is adjusted. Therefore, the final display result of the foreground image can be presented in a constant size.
- the video image to be output is a specified screen.
- the specified screen can be specified manually or periodically, or it can be specified by the sender.
- the adjustment parameters are determined by specifying the screen.
- the adjustment parameters include: the adjustment factor of the foreground picture, and the clipping/filling position parameter of the video image.
- Each frame of the video image received by the receiving end is adjusted according to the adjustment parameters of the specified screen, and output to the display device for display.
- the product of the size of the foreground picture, the size and resolution of the display device, and the adjustment coefficient of the foreground picture and the scaling factor when the display device is displayed are equal to a fixed constant adjustment rule.
- the device may be a receiving device, the device includes: an obtaining module 301, a determining module 302, and an adjustment and output module 303;
- the obtaining module 301 is configured to obtain foreground information of the video image to be output, where the foreground information includes a size of the foreground image;
- the determining module 302 is configured to determine an adjustment coefficient of the foreground picture according to a size of the foreground picture, a size and a resolution of the display device, and a preset adjustment rule, where the adjustment rule is an adjustment coefficient of the foreground picture and the display device is displayed
- the product of the scaling factor is equal to a fixed constant
- the adjustment and output module 303 is configured to adjust the video image to be output according to the adjustment coefficient of the foreground picture, and output the adjusted video image to the display device for display.
- the adjustment and output module 303 includes: a first adjustment unit 3031a and a first output unit 3031b, and may further include a first processing unit 3031c,
- the first adjusting unit 3031a is configured to adjust the video image to be output according to the adjustment coefficient of the foreground picture
- a first output unit 303 lb for outputting the adjusted video image to a display device for display
- the first processing unit 3031c is configured to perform cutting or filling processing on the adjusted video image before the function of the first output unit 3031b is performed, so that the size of the adjusted video image is equal to the size and fixed constant of the video image to be output.
- the device further includes: a separation module 304, configured to separate the foreground image corresponding to the foreground information from the video image to be output before performing the function of the adjustment and output module 303, and to be The picture other than the foreground picture in the output video image is used as the background picture.
- a separation module 304 configured to separate the foreground image corresponding to the foreground information from the video image to be output before performing the function of the adjustment and output module 303, and to be The picture other than the foreground picture in the output video image is used as the background picture.
- the adjustment and output module 303 includes: a second adjustment unit 3032a and a second output unit 3032b, and may further include a second processing unit 3032c
- the second adjusting unit 3032a is configured to adjust the size of the foreground picture, the size of the background picture, and the position of the reference point of the foreground picture according to the adjustment coefficient of the foreground picture, and adjust the adjusted foreground picture and the adjusted background picture respectively. Superimposing, and aligning the reference point of the foreground picture to the position of the reference point of the adjusted foreground picture when superimposing;
- the second output unit 3032b is configured to output the adjusted video image to the display device for display.
- the second processing unit 3032c is configured to perform cutting or filling processing on the adjusted background picture before performing the function of the second output unit 3032b, so that the size of the adjusted background picture is equal to the size and fixed constant of the background picture before the adjustment.
- the product of the size of the foreground picture, the size and resolution of the display device, and the adjustment coefficient of the foreground picture and the scaling factor when the display device is displayed are equal to a fixed constant adjustment rule.
- the foreground picture can be rendered in the original size at the final display, which improves the fidelity of the foreground picture.
- All or part of the technical solutions provided by the above embodiments may be implemented by software programming, and the software programs thereof are stored in a readable storage medium such as a hard disk, an optical disk or a floppy disk in a computer.
- a readable storage medium such as a hard disk, an optical disk or a floppy disk in a computer.
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Abstract
本发明公开了一种视频图像显示的方法和装置,属于视频显示领域。方法包括:获取待输出的视频图像的前景信息,前景信息包括前景画面的尺寸;根据所述前景画面的尺寸、显示设备的尺寸和分辨率、和预设的调整规则,确定所述前景画面的调整系数,其中,所述调整规则为前景画面的调整系数与所述显示设备显示时的缩放倍数的乘积等于固定常数;根据所述前景画面的调整系数,对所述待输出的视频图像进行调整,并将调整后的视频图像输出到所述显示设备进行显示。装置包括:获取模块、确定模块、以及调整和输出模块。本发明通过上述方案,使前景画面在最终显示时能够按照恒定尺寸呈现,当固定常数=1时,还能以原始尺寸呈现,提高了前景画面的保真度。
Description
视频图像显示的方法和装置 本申请要求于 2011 年 04 月 01 日提交中国专利局、 申请号为 201110081975.8、 发明名称为"视频图像显示的方法和装置 "的中国专利申请 的优先权, 其全部内容通过引用结合在本申请中。
技术领域
本发明涉及视频显示领域, 特别涉及一种视频图像显示的方法和装置。 背景技术
随着编码和信息压缩技术以及数字网络的发展, 人们研发出视频显式系 统, 可以实现在两点之间或多点之间实时传送活动图像、 语音以及应用数据 等信息。
视频显式系统的一个基本功能是视频图像的采集与显示。 在视频显示过 程中, 接收端设备接收视频压缩码流, 将视频压缩码流解码后得到视频图像, 然后将视频图像输出到显示设备进行显示。 视频图像在显示设备显示时, 根 据显示器的尺寸和分辨率的不同, 视频图像中的前景画面, 例如人脸区域, 可能被缩小或放大。 由于显示设备通常是用户自己安装的, 不同会场的显示 设备的尺寸和分辨率可能不同, 前景画面可能产生不同的缩放效果。 例如, 在分辨率相同的情况下, 同等真人大小的前景画面, 在 52寸显示设备上显示 时是一个真人的大小, 感觉非常真实; 如果该前景画面呈现在 62寸的显示设 备上, 则会感觉前景画面明显被放大; 如果该视频图像呈现在 42寸的显示设 备上, 则会感觉前景画面明显被缩小。
综上所述, 在现有的视频显示系统中, 视频图像中的前景画面在不同尺 寸和分辨率的显示设备显示时, 会不同程度的被缩小或放大, 难以按照恒定 尺寸呈现, 从而存在一定程度的失真感。
发明内容
为了在视频显示系统中, 使视频图像中的前景画面能够按照恒定尺寸呈 现, 本发明实施例提供了一种视频图像显示的方法和装置。 所述技术方案如 下:
一种视频图像显示的方法, 所述方法包括:
获取待输出的视频图像的前景信息, 所述前景信息包括前景画面的尺寸; 根据所述前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整规 则, 确定所述前景画面的调整系数, 其中, 所述调整规则为所述前景画面的 调整系数与所述显示设备显示时的缩放倍数的乘积等于固定常数;
根据所述前景画面的调整系数, 对所述待输出的视频图像进行调整, 并 将调整后的视频图像输出到所述显示设备进行显示。
一种视频图像显示的装置, 所述装置包括: 获取模块、 确定模块、 以及 调整和输出模块;
所述获取模块, 用于获取待输出的视频图像的前景信息, 所述前景信息 包括前景画面的尺寸;
所述确定模块, 用于根据所述前景画面的尺寸、 显示设备的尺寸和分辨 率、 和预设的调整规则, 确定所述前景画面的调整系数, 其中, 所述调整规 则为所述前景画面的调整系数与所述显示设备显示时的缩放倍数的乘积等于 固定常数;
所述调整和输出模块, 用于根据所述前景画面的调整系数, 对所述待输 出的视频图像进行调整, 并将调整后的视频图像输出到所述显示设备进行显 示。
本发明实施例提供的技术方案带来的有益效果是:
通过获取视频图像的前景信息, 根据前景画面的尺寸、 显示设备的尺寸 和分辨率以及所述前景画面的调整系数与所述显示设备显示时的缩放倍数的 乘积等于固定常数的调整规则, 确定前景画面的调整系数, 根据调整系数对 视频图像进行调整后再输出到显示设备进行显示, 使得显示时被放大的前景 画面在调整时已被缩小, 显示时被缩小的前景画面在调整时已被放大, 从而
使前景画面在最终显示时能够按照恒定尺寸呈现,特别的, 当固定常数 =1时, 能够使前景画面在最终显示时按照原始尺寸呈现, 提高了前景画面的保真度。 附图说明 施例或现有技术描述中所需要使用的附图作一筒单地介绍, 显而易见地, 下 面描述中的附图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。
图 1是本发明的一个实施例提供的视频图像显示的方法流程图;
图 2是本发明的另一个实施例提供的视频图像显示的方法流程图; 图 3是本发明的另一个实施例提供的视频图像显示的方法流程图; 图 4是本发明的另一个实施例提供的视频图像显示的装置结构示意图; 图 4-a是本发明的另一个实施例提供的另一视频图像显示的装置结构示意 图;
图 4-b是本发明的另一个实施例提供的另一视频图像显示的装置结构示意 图。
具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发 明实施方式作进一步地详细描述。
参见图 1 , 本发明的一个实施例提供了一种视频图像显示的方法, 该方法 可以由接收端设备执行, 该方法包括:
511、 获取待输出的视频图像的前景信息, 该前景信息包括前景画面的尺 寸;
512、 根据该前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整 规则, 确定该前景画面的调整系数, 其中, 该调整规则为该前景画面的调整 系数与该显示设备显示时的缩放倍数的乘积等于固定常数;
513、 根据该前景画面的调整系数, 对该待输出的视频图像进行调整, 并 将调整后的视频图像输出到该显示设备进行显示。
本实施例通过获取视频图像的前景信息, 根据前景画面的尺寸、 显示设 备的尺寸和分辨率以及所述前景画面的调整系数与所述显示设备显示时的缩 放倍数的乘积等于固定常数的调整规则, 确定前景画面的调整系数, 根据调 整系数对视频图像进行调整后再输出到显示设备进行显示, 使得显示时被放 大的前景画面在调整时已被缩小, 显示时被缩小的前景画面在调整时已被放 大, 从而使前景画面在最终显示时能够按照恒定尺寸呈现, 特别的, 当固定 常数 =1时, 能够使前景画面在最终显示时按照原始尺寸呈现, 提高了前景画 面的保真度。 参见图 2, 本发明的另一个实施例提供了一种视频图像显示的方法, 该方 法可以由接收端设备执行, 该方法包括:
101、 接收待输出的视频图像;
本实施设视频图像的水平分辨率和垂直分辨率分别为 Wl、 Hl。
102、 获取视频图像的前景信息, 前景信息包括前景画面的尺寸和前景画 面的参考点的位置;
其中, 前景画面包括人脸区域或运动区域。 获取视频图像的前景信息具 体有两种方法, 第一种是发送端将视频图像的前景信息随视频图像的码流一 起发送给接收端, 因此接收端从发送端发送的码流直接提取视频图像的前景 信息。 第二种是接收端采用前景智能检测算法从视频图像中检测出前景画面, 根据前景画面确定相应的前景信息。 前景智能检测算法可以为人脸区域检测 算法或运动区域检测算法, 这两种算法均为现有技术, 这里不再赘述。
其中, 前景画面的尺寸包括宽度和高度信息。 前景画面的参考点可以是 前景画面中的任意一点, 例如, 前景画面的左上角顶点。
以前景画面是人脸区域为例, 本实施例设人脸区域的宽度为\¥_ &06 , 高 度为 H_face; 并设人脸区域的参考点为人脸区域的左上角顶点,人脸区域的左 上角顶点相对于视频图像的左上角顶点的位置包括左偏移 LeftOffset和上偏移 TopOffset。
103、 根据前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整规
则, 确定前景画面的调整系数;
预设的调整规则为: 前景画面的调整系数与显示设备显示时的缩放倍数 之间的乘积等于固定常数。 即如果前景画面在该尺寸和分辨率对应的显示器 进行显示时被放大, 则将前景画面的尺寸缩小, 如果前景画面在该尺寸和分 辨率对应的显示器进行显示时被缩小, 则将前景画面的尺寸放大。 当固定常 数等于 1时, 调整后的前景画面在不同的显示设备可以按照原始尺寸显示, 当 固定常数等于除 1之外的其他值时, 调整后的前景画面在不同的显示设备可以 按照恒定尺寸显示。
其中, 前景画面的调整系数包括: 前景画面宽度的调整系数和前景画面 高度的调整系数, 二者可以相等也可以不等。
104、 根据前景信息, 从视频图像分离出前景信息对应的前景画面, 将视 频图像中除前景画面之外的画面作为背景画面;
105、 根据前景画面的调整系数, 对前景画面的尺寸进行调整; 其中, 调整后的前景画面的尺寸 =调整前的前景画面的尺寸 X前景画面的 调整系数。
如果前景画面是人脸区域, 当已知人脸区域的显示尺寸、 以及显示设备 的尺寸和分辨率时, 根据上述预设的调整规则, 可以确定前景画面的调整系 数, 进而确定出调整后的人脸区域的尺寸。 具体实现时, 为了节省调整时的 计算时间, 可以预先设定一个显示设备的尺寸和分辨率、 与调整后的人脸区 域的尺寸之间的调整关系表, 对前景画面的尺寸进行调整时, 可以查找调整 关系表, 直接确定显示设备的尺寸和分辨率对应的前景画面的尺寸。
例如, 参见表 1所示的调整关系表一个示例, 如果显示设备为 52寸, 显示 设备分辨率为 1280x720, 那么对于尺寸为\¥_ &06和11_ &06的人脸区域, 调整 后的人脸区域的尺寸对应的宽高分别为 Face_Wl 1、 Face_Hl 1。
显示设备尺 显示设备分辨率 调整后的人脸区域尺寸 (宽 / 寸 高)
1920x1080 Face_W00, Face_H00
42寸 1280x720 Face_W01 , Face_H01
720x576 Face_W02, Face_H02
1920x1080 Face_W10, Face_H10
52寸 1280x720 Face_Wl l , Face_Hl l
720x576 Face_W12, Face_H12
1920x1080 Face_W20, Face_H20
65寸 1280x720 Face_W21 , Face_H21
720x576 Face_W22, Face_H22
106、 根据前景画面的调整系数, 对背景画面的尺寸进行调整;
具体的, 调整后的背景画面的尺寸 =调整前的背景画面的尺寸 X前景画 面的调整系数。 以上述前景画面是人脸区域为例:
人脸区域宽度的调整系数 Scale_W = Face_Wl lAV_face;
人脸区域高度的调整系数 Scale_H = Face_Hl l/H_face;
则,
调整后的背景画面的宽度 W2=W1 X Scale_W;
调整后的背景画面的高度 H2=H1 Scale_H。
进一步的, 对调整后的背景画面进行处理, 使调整后的背景画面的尺寸 等于调整前的背景画面的尺寸与固定常数的乘积。 具体的, 如果调整后的背 景画面的尺寸大于调整前的背景画面的尺寸与固定常数的乘积, 剪切调整后 的背景画面, 使调整后的背景画面的尺寸等于调整前的背景画面的尺寸与固 定常数的乘积; 如果调整后的背景画面的尺寸等于调整前的背景画面的尺寸 与固定常数的乘积, 不处理; 如果调整后的背景画面的尺寸小于调整前的背 景画面的尺寸与所述固定常数的乘积, 对调整后的背景画面进行填充, 使调 整后的背景画面的尺寸等于调整前的背景画面的尺寸与固定常数的乘积, 本
实施例不限定填充方式, 例如, 填充方式可以是左右扩变填充方式、 左右镜 像填充方式、 单色调填充方式、 背景图片填充方式等。
例如, 当固定常数 =1时, 对调整后的背景画面的宽度进行处理, 如果 W2>W1 , 可以在宽度为 W2的背景画面中剪切出宽度为 Wl的背景画面; 如果 W2=W1 , 不处理; 如果 W2<W1 , 可以对宽度为 W2背景画面进行填充, 使背 景画面的宽度变为 Wl。 背景画面的高度与宽度的处理过程相同, 这里不再赘 述。
107、 根据前景画面的调整系数, 对前景画面的参考点的位置进行调整; 具体的, 调整后的前景画面的参考点的位置 =调整前的前景画面的参考 点的位置 X前景画面的调整系数。 以上述前景画面是人脸区域为例:
人脸区域宽度的调整系数 Scale_W = Face_Wl lAV_face;
人脸区域高度的调整系数 Scale_H = Face_Hl 1/H_face;
则,
调整后的人脸区域左上角顶点的左偏移 LeftOffset2=LeftOffset Scale_W;
调整后的人脸区域左上角顶点的上偏移 TopOffset2=TopOffset x Scale_H。
108、 将调整后的前景画面和调整后的背景画面进行叠加, 并且叠加时将 前景画面的参考点对齐到调整后的前景画面的参考点的位置;
109、 将叠加后的画面输出到显示设备进行显示。
具体的, 按照预设的调整规则, 前景画面的调整系数与显示设备显示时 的缩放倍数之间的乘积等于固定常数, 因此, 如果叠加后的画面在显示设备 进行显示时被放大, 前景画面在调整时会被缩小, 因此前景画面最终的显示 结果能够按照恒定尺寸呈现, 特别的, 当固定常数 =1时, 前景画面最终显示 结果能够按照原始尺寸呈现; 反之, 如果叠加后的画面在显示设备进行显示 时被缩小, 前景画面在调整时会被放大, 因此前景画面最终的显示结果能够 按照恒定尺寸呈现, 特别的, 当固定常数 =1时, 前景画面最终显示结果能够 按照原始尺寸呈现。
进一步的, 待输出的视频图像是一个指定画面。 指定画面可以手动指定,
也可以定时指定, 也可以发送端通过指令指定。 通过指定画面, 确定调整参 数。 调整参数包括: 前景画面的调整系数, 背景的剪切 /填充位置参数。 接收 端后续接收的每一帧视频图像, 均按照上述指定画面的调整参数进行尺寸调 整, 并叠加, 将叠加画面输出到显示设备进行显示。
本实施例通过获取视频图像的前景信息, 根据前景画面的尺寸、 显示设 备的尺寸和分辨率以及所述前景画面的调整系数与所述显示设备显示时的缩 放倍数的乘积等于固定常数的调整规则, 确定前景画面的调整系数, 根据调 整系数对前景画面、 背景画面和前景画面的参考点的位置分别进行调整, 并 且根据调整后的参考点的位置将调整后的前景画面和调整后的背景画面进行 叠加, 再输出到显示设备进行显示, 使得显示时被放大的前景画面在调整时 已被缩小, 显示时被缩小的前景画面在调整时已被放大, 从而使前景画面在 最终显示时能够按照恒定尺寸呈现, 特别的, 当固定常数 =1时, 能够使前景 画面在最终显示时按照原始尺寸呈现, 提高了前景画面的保真度。 参见图 3 , 本发明的另一个实施例提供了一种视频图像显示的方法, 该方 法可以由接收端设备执行, 该方法包括:
201、 接收待输出的视频图像;
本步骤与步骤 101相同, 这里不再赘述。
202、 获取视频图像的前景信息, 前景信息包括前景画面的尺寸; 本步骤中获取前景信息的方法与步骤 102相同, 这里不再赘述。 本步骤中 前景信息的内容与步骤 102中前景信息的内容不同。
203、 根据前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整规 则, 确定前景画面的调整系数;
本步骤与步骤 103相同, 这里不再赘述。
204、 根据前景画面的调整系数, 对视频图像进行调整;
具体的, 调整后的视频图像的尺寸 =调整前的视频图像的尺寸 X前景画 面的调整系数。
进一步的, 对调整后的视频图像进行处理, 使调整后的视频图像的尺寸
等于调整前的视频图像的尺寸 (即待输出的视频图像) 与固定常数的乘积。 具体的, 如果调整后的视频图像的尺寸大于调整前的视频图像的尺寸与固定 常数的乘积, 剪切调整后的视频图像, 使调整后的视频图像的尺寸等于调整 前的视频图像的尺寸与固定常数的乘积; 如果调整后的视频图像的尺寸等于 调整前的视频图像的尺寸与固定常数的乘积, 不处理; 如果调整后的视频图 像的尺寸小于调整前的视频图像的尺寸与固定常数的乘积, 对调整后的视频 图像进行填充, 使调整后的视频图像的尺寸等于调整前的视频图像的尺寸与 固定常数的乘积, 本实施例不限定填充方式, 例如, 填充方式可以是左右扩 变填充方式、 左右镜像填充方式、 单色调填充方式、 背景图片填充方式等。
205、 将调整后的视频图像输出到显示设备进行显示。
具体的, 按照预设的调整规则, 前景画面的调整系数与显示设备显示时 的缩放倍数之间的乘积等于固定常数, 因此, 如果调整后的视频图像在显示 设备进行显示时被放大, 前景画面在调整时会被缩小, 因此前景画面最终的 显示结果能够按照恒定尺寸呈现, 特别的, 当固定常数 =1时, 前景画面最终 显示结果能够按照原始尺寸呈现; 反之, 如果调整后的视频图像在显示设备 进行显示时被缩小, 前景画面在调整时会被放大, 因此前景画面最终的显示 结果能够按照恒定尺寸呈现, 特别的, 当固定常数 =1时, 前景画面最终显示 结果能够按照原始尺寸呈现。
进一步的, 待输出的视频图像是一个指定画面。 指定画面可以手动指定, 也可以定时指定, 也可以发送端通过指令指定。 通过指定画面, 确定调整参 数。 调整参数包括: 前景画面的调整系数, 视频图像的剪切 /填充位置参数。 接收端后续接收的每一帧视频图像, 均按照上述指定画面的调整参数进行尺 寸调整, 并输出到显示设备进行显示。
本实施例通过获取视频图像的前景信息, 根据前景画面的尺寸、 显示设 备的尺寸和分辨率以及所述前景画面的调整系数与所述显示设备显示时的缩 放倍数的乘积等于固定常数的调整规则, 确定前景画面的调整系数, 根据调 整系数对整个视频图像进行调整后再输出到显示设备进行显示, 使得显示时 被放大的前景画面在调整时已被缩小, 显示时被缩小的前景画面在调整时已
被放大, 从而使前景画面在最终显示时能够按照原始尺寸呈现, 特别的, 当 固定常数 =1时, 能够使前景画面在最终显示时按照原始尺寸呈现, 提高了前 景画面的保真度。 参见图 4, 本发明的另一个实施例提供了一种视频图像显示的装置, 该装 置可以是接收端设备, 该装置包括: 获取模块 301、 确定模块 302、 以及调整 和输出模块 303;
获取模块 301 , 用于获取待输出的视频图像的前景信息, 前景信息包括前 景画面的尺寸;
确定模块 302, 用于根据前景画面的尺寸、 显示设备的尺寸和分辨率、 和 预设的调整规则, 确定前景画面的调整系数, 其中, 调整规则为前景画面的 调整系数与显示设备显示时的缩放倍数的乘积等于固定常数;
调整和输出模块 303 , 用于根据前景画面的调整系数, 对待输出的视频图 像进行调整, 并将调整后的视频图像输出到显示设备进行显示。
1 ) 当对整个视频图像进行调整时, 参见图 4-a,
调整和输出模块 303包括: 第一调整单元 3031a和第一输出单元 3031b, 还 可以包括第一处理单元 3031c,
第一调整单元 3031a, 用于根据前景画面的调整系数, 对待输出的视频图 像进行调整;
第一输出单元 303 lb , 用于将调整后的视频图像输出到显示设备进行显 示;
第一处理单元 3031c, 用于执行第一输出单元 3031b的功能之前, 对调整 后的视频图像进行剪切或填充处理, 使调整后的视频图像的尺寸等于待输出 的视频图像的尺寸与固定常数的乘积。
2 )当将视频图像分离为前景画面和背景画面、并分别调整时,参见图 4-b, 其中, 前景信息还包括前景画面的参考点的位置;
相应的, 该装置还包括: 分离模块 304, 用于执行调整和输出模块 303的 功能之前, 从待输出的视频图像分离出前景信息对应的前景画面, 并将待输
出的视频图像中除前景画面之外的画面作为背景画面。
相应的, 调整和输出模块 303包括: 第二调整单元 3032a和第二输出单元 3032b, 还可以包括第二处理单元 3032c
第二调整单元 3032a, 用于根据前景画面的调整系数, 分别对前景画面的 尺寸、 背景画面的尺寸、 和前景画面的参考点的位置进行调整, 将调整后的 前景画面和调整后的背景画面进行叠加, 并且叠加时将前景画面的参考点对 齐到调整后的前景画面的参考点的位置;
第二输出单元 3032b , 用于将调整后的视频图像输出到显示设备进行显 示。
第二处理单元 3032c , 用于执行第二输出单元 3032b的功能之前, 对调整 后的背景画面进行剪切或填充处理, 使调整后的背景画面的尺寸等于调整前 的背景画面的尺寸与固定常数的乘积。
本实施例通过获取视频图像的前景信息, 根据前景画面的尺寸、 显示设 备的尺寸和分辨率以及所述前景画面的调整系数与所述显示设备显示时的缩 放倍数的乘积等于固定常数的调整规则, 确定前景画面的调整系数, 根据调 整系数对视频图像进行调整后再输出到显示设备进行显示, 使得显示时被放 大的前景画面在调整时已被缩小, 显示时被缩小的前景画面在调整时已被放 大, 从而使前景画面在最终显示时能够按照原始尺寸呈现, 特别的, 当固定 常数 =1时, 能够使前景画面在最终显示时按照原始尺寸呈现, 提高了前景画 面的保真度。 以上实施例提供的技术方案中的全部或部分内容可以通过软件编程实 现, 其软件程序存储在可读取的存储介质中, 存储介质例如: 计算机中的硬 盘、 光盘或软盘。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明 的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发 明的保护范围之内。
Claims
1、 一种视频图像显示的方法, 其特征在于, 所述方法包括:
获取待输出的视频图像的前景信息, 所述前景信息包括前景画面的尺寸; 根据所述前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整规则, 确定所述前景画面的调整系数, 其中, 所述调整规则为所述前景画面的调整系 数与所述显示设备显示时的缩放倍数的乘积等于固定常数;
根据所述前景画面的调整系数, 对所述待输出的视频图像进行调整, 并 将 调整后的视频图像输出到所述显示设备进行显示。
2、 根据权利要求 1所述的方法, 其特征在于, 所述将调整后的视频图像输 出到所述显示设备进行显示之前, 包括:
对所述调整后的视频图像进行剪切或填充处理, 使所述调整后的视频图像 的尺寸等于所述待输出的视频图像的尺寸与所述固定常数的乘积。
3、 根据权利要求 1所述的方法, 其特征在于, 所述前景信息还包括所述前 景画面的参考点的位置;
所述根据所述前景画面的调整系数, 对所述待输出的视频图像进行调整之 前, 包括:
从所述待输出的视频图像分离出所述前景信息对应的前景画面, 并将所述 待输出的视频图像中除所述前景画面之外的画面作为背景画面。
4、 根据权利要求 3所述的方法, 其特征在于, 所述根据所述前景画面的调 整系数, 对所述待输出的视频图像进行调整, 包括:
根据所述前景画面的调整系数, 分别对所述前景画面的尺寸、 所述背景画 面的尺寸、 和所述前景画面的参考点的位置进行调整;
将调整后的前景画面和调整后的背景画面进行叠加, 并且叠加时将所述前 景画面的参考点对齐到调整后的前景画面的参考点的位置。
5、 根据权利要求 4所述的方法, 其特征在于, 所述将调整后的视频图像输 出到所述显示设备进行显示之前, 包括:
对所述调整后的背景画面进行剪切或填充处理, 使所述调整后的背景画面 的尺寸等于调整前的背景画面的尺寸与所述固定常数的乘积。
6、 一种视频图像显示的装置, 其特征在于, 所述装置包括: 获取模块、 确 定模块、 以及调整和输出模块;
所述获取模块, 用于获取待输出的视频图像的前景信息, 所述前景信息包 括前景画面的尺寸;
所述确定模块, 用于 ^据所述前景画面的尺寸、 显示设备的尺寸和分辨率、 和预设的调整规则, 确定所述前景画面的调整系数, 其中, 所述调整规则为所 述前景画面的调整系数与所述显示设备显示时的缩放倍数的乘积等于固定常 数;
所述调整和输出模块, 用于根据所述前景画面的调整系数, 对所述待输出 的视频图像进行调整, 并将调整后的视频图像输出到所述显示设备进行显示。
7、 根据权利要求 6所述的装置, 其特征在于, 所述调整和输出模块包括: 第一调整单元、 第一输出单元和第一处理单元,
所述第一调整单元, 用于根据所述前景画面的调整系数, 对所述待输出的 视频图像进行调整;
所述第一输出单元, 用于将调整后的视频图像输出到所述显示设备进行显 示;
所述第一处理单元, 用于执行所述第一输出单元的功能之前, 对所述调整 后的视频图像进行剪切或填充处理, 使所述调整后的视频图像的尺寸等于所述 待输出的视频图像的尺寸与所述固定常数的乘积。
8、 根据权利要求 6所述的装置, 其特征在于, 所述前景信息还包括所述前 景画面的参考点的位置;
所述装置还包括: 分离模块, 用于执行所述调整和输出模块的功能之前, 从所述待输出的视频图像分离出所述前景信息对应的前景画面, 并将所述待输 出的视频图像中除所述前景画面之外的画面作为背景画面。
9、 根据权利要求 8所述的装置, 其特征在于, 所述调整和输出模块包括: 第二调整单元和第二输出单元,
所述第二调整单元, 用于根据所述前景画面的调整系数, 分别对所述前景 画面的尺寸、 所述背景画面的尺寸、 和所述前景画面的参考点的位置进行调整, 将调整后的前景画面和调整后的背景画面进行叠加, 并且叠加时将所述前景画 面的参考点对齐到调整后的前景画面的参考点的位置;
所述第二输出单元, 用于将调整后的视频图像输出到所述显示设备进行显 示。
10、 根据权利要求 9所述的装置, 其特征在于, 所述调整和输出模块还包 括: 第二处理单元, 用于执行所述第二输出单元的功能之前, 对所述调整后的 背景画面进行剪切或填充处理, 使所述调整后的背景画面的尺寸等于调整前的 背景画面的尺寸与所述固定常数的乘积。
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| CN103533249B (zh) * | 2013-10-25 | 2017-12-12 | 惠州Tcl移动通信有限公司 | 一种调整前景和背景的方法及装置 |
| CN103702181A (zh) * | 2013-12-13 | 2014-04-02 | 乐视网信息技术(北京)股份有限公司 | 一种视频图像的处理方法和装置 |
| CN105224275A (zh) * | 2015-10-10 | 2016-01-06 | 天脉聚源(北京)教育科技有限公司 | 一种信息处理方法及装置 |
| CN106027979A (zh) * | 2016-06-21 | 2016-10-12 | 深圳市智美达科技股份有限公司 | 摄像监控图像显示系统 |
| CN106210855B (zh) * | 2016-07-11 | 2019-12-13 | 网易(杭州)网络有限公司 | 对象显示方法和装置 |
| CN109215002A (zh) * | 2017-06-30 | 2019-01-15 | 北京世纪好未来教育科技有限公司 | 一种视频图像处理方法、装置及系统 |
| CN107689028A (zh) * | 2017-08-22 | 2018-02-13 | 深圳市爱培科技术股份有限公司 | 基于adas的自适应界面显示方法、系统和存储装置 |
| CN116033098A (zh) * | 2022-12-30 | 2023-04-28 | 联想(北京)有限公司 | 一种信息处理方法及电子设备 |
| WO2024181738A1 (ko) * | 2023-02-28 | 2024-09-06 | 삼성전자 주식회사 | 영상 표시 방법 및 이를 지원하는 전자 장치 |
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| CN117294804B (zh) * | 2023-10-26 | 2024-02-27 | 中运科技股份有限公司 | 广告素材自适应生成方法、装置、设备及存储介质 |
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| CN102737617A (zh) | 2012-10-17 |
| US8520145B2 (en) | 2013-08-27 |
| EP2562744A4 (en) | 2013-05-29 |
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