WO2017193576A1 - 一种视频分辨率的适应方法、装置及虚拟现实终端 - Google Patents

一种视频分辨率的适应方法、装置及虚拟现实终端 Download PDF

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WO2017193576A1
WO2017193576A1 PCT/CN2016/109555 CN2016109555W WO2017193576A1 WO 2017193576 A1 WO2017193576 A1 WO 2017193576A1 CN 2016109555 W CN2016109555 W CN 2016109555W WO 2017193576 A1 WO2017193576 A1 WO 2017193576A1
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Prior art keywords
video
display screen
virtual reality
effective display
size
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English (en)
French (fr)
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许小飞
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Le Holdings Beijing Co Ltd
Leshi Zhixin Electronic Technology Tianjin Co Ltd
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Le Holdings Beijing Co Ltd
Leshi Zhixin Electronic Technology Tianjin Co Ltd
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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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234363—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the spatial resolution, e.g. for clients with a lower screen resolution
    • 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
    • H04N21/4402—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 reformatting operations of video signals for household redistribution, storage or real-time display
    • 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
    • H04N21/4402—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 reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—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 reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA

Definitions

  • the embodiments of the present invention belong to the field of image processing, and in particular, to a method and device for adapting video resolution and a virtual reality terminal.
  • Virtual Reality is a virtual world that uses computers to simulate three-dimensional space, allowing users to experience interactive and immersive experiences through vision and hearing.
  • Virtual reality technology is computer graphics. A comprehensive technology that intersects in the fields of human-computer interaction and sensing technology. With the rapid development of computer hardware and network environment, virtual reality technology has developed rapidly and many mature virtual reality systems have emerged. They have wide applications in virtual simulation, geographic information system, user social, game entertainment and so on. .
  • the visual system is the most important perceptual channel of VR.
  • the perceptibility of virtual scene is also a prerequisite for human-computer interaction in the virtual environment. Therefore, the scene display mode and its equipment are the basic components of human-computer interaction in VR system.
  • the commonly used scene display modes are helmet type, desktop type, projection type, hand-held type and free stereoscopic display mode, and each display mode includes multiple types of screen sizes.
  • the video content needs to be presented in high resolution, which makes the video file large, usually more than 1 GB capacity, and if it is rendered after downloading, the loading on the terminal device is too slow, and it is expensive and complicated.
  • the terminal device which is the first factor that affects the experience, so consider streaming to the end user via network streaming.
  • the video is compressed and encoded and stored on the server. It has multiple compression formats and resolution differences, such as SD, HD, and Ultra Clear. In order to be able to present the video streaming media comfortably and smoothly to the user, Video needs to be played in a variety of screen sizes and multiple resolutions. Therefore, there is a need for a method and apparatus for adapting video resolution in a virtual reality terminal.
  • the embodiments of the present invention provide a method, a device, and a virtual reality terminal for adapting video resolution, so that the user can perform virtual reality video playback online in a comfortable and smooth manner.
  • An embodiment of the present invention provides a method for adapting video resolution in a virtual reality terminal, which is applied to an electronic terminal, and includes:
  • the playback size of the video to be played is scaled to adapt the target resolution of the video playback to the effective display screen size based on the target resolution of the video playback and the effective display screen size of the display in the virtual reality terminal.
  • the effective display screen size of the display in the virtual reality terminal is represented by a long and wide pixel value of the effective display screen of the display in the virtual reality terminal.
  • obtaining the target resolution of the video playback comprises: selecting a video resolution from the candidate plurality of video resolutions as the target resolution according to the transmission speed and the available bandwidth.
  • obtaining the target resolution of the video playback comprises: capturing an operation event of the user, and selecting a fixed video resolution from the plurality of video resolutions as the target resolution according to the captured operation event. rate.
  • the playing size of the video to be played is scaled to distinguish the target of the video playing.
  • the rate adaptation to the effective display screen size includes:
  • An embodiment of the present invention provides an apparatus for adapting video resolution in a virtual reality terminal, including:
  • Obtaining a module obtaining an effective display screen size of the display in the virtual reality terminal and obtaining a target resolution of the video playing;
  • a video scaling module configured to scale a play size of the video to be played according to a target resolution of the video play and an effective display screen size of the display in the virtual reality terminal, so that the target resolution of the video play is adapted to the effective display screen size.
  • the effective display screen size of the display in the virtual reality terminal is represented by a long and wide pixel value of the effective display screen of the display in the virtual reality terminal.
  • the acquiring module is further configured to adaptively select a video resolution as the target resolution from the candidate multiple video resolutions according to the transmission speed and the available bandwidth.
  • the obtaining module is further configured to capture an operation event of the user, and select a fixed video resolution as the target resolution from the plurality of video resolutions according to the captured operation event.
  • the video scaling module is further configured to calculate a scaling ratio of a play size of the video according to a target resolution of the video playing and an effective display screen size of the display in the virtual reality terminal. a playback size of the scaled video relative to the effective display screen size in a one-side fill amount in the length direction or a one-side fill amount in the width direction; and scaling the play size of the video to be played according to the calculated zoom ratio And performing, according to the calculated one-side filling amount, a double-side filling in the longitudinal direction or a double-side filling in the width direction on the area where the video content is not played on the effective display screen.
  • Embodiments of the present invention provide a virtual reality terminal, which includes a display, a processor, and a processor. Obtaining an effective display screen size of the display in the virtual reality terminal and obtaining a target resolution of the video playing, and playing the video to be played according to the target resolution of the video playing and the effective display screen size of the display in the virtual reality terminal The size is scaled to adapt the target resolution of the video playback to the effective display screen size.
  • the embodiment of the present invention provides a non-transitory computer readable storage medium, where the non-transitory computer readable storage medium stores program instructions for executing, when the terminal is the program instruction,
  • the playback size of the video to be played is scaled to adapt the target resolution of the video playback to the effective display screen size based on the target resolution of the video playback and the effective display screen size of the display in the virtual reality terminal.
  • An embodiment of the present invention provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by the terminal, The terminal performs the above method.
  • the video to be played is scaled to adapt the target resolution of the video playback to the effective display screen size, thereby being adaptively presented on the screens of various sizes of virtual reality terminal devices according to the user's requirements for video resolution, so that the user is comfortable. Smooth viewing.
  • FIG. 1 is a schematic flowchart of a method for adapting video resolution in a virtual reality terminal according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of selecting one-side filling according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic flowchart of adaptively selecting a video resolution as a target resolution from an alternative multiple video resolution according to Embodiment 3 of the present invention
  • FIG. 4 is a schematic flowchart of performing video adjustment according to Embodiment 4 of the present invention.
  • FIG. 5 is a schematic structural diagram of a video multi-resolution adaptive device in a virtual reality terminal according to Embodiment 5 of the present invention.
  • FIG. 6 is a schematic structural diagram of a virtual reality terminal according to Embodiment 6 of the present invention.
  • the effective display screen size of the display in the virtual reality terminal and obtaining the target resolution of the video playback; and scaling the video to be played according to the target resolution of the video playback and the effective display screen size of the display in the virtual reality terminal
  • the user can adaptively present on the screen of the virtual reality terminal device of various sizes according to the user's requirement for the video resolution, so that the user can obtain a comfortable and smooth viewing effect.
  • Any technical solution of implementing the embodiments of the present invention necessarily does not necessarily need to achieve all the above advantages at the same time.
  • the present invention provides a method and device for adapting video resolution in a virtual reality terminal, which is generally applied to a virtual reality video on demand network. If the resolution of the video matches the size of the effective display screen, the video is directly played; if not, Then, the technical solutions of the following embodiments are executed.
  • FIG. 1 is a schematic flowchart of a method for adapting video resolution in a virtual reality terminal according to an embodiment of the present invention, which may include:
  • Step S1 Obtain an effective display screen size of the display in the virtual reality terminal and obtain a target resolution of the video playback.
  • the common resolution will vary depending on the ratio (aspect ratio) displayed on the display, as detailed below:
  • the resolution is also related to video clarity.
  • the definitions are standard definition, ultra clear, high definition, broadcast TV and cinema movies. The corresponding resolution is shown in Table 2:
  • Step S2 according to the target resolution of the video playing and the effective display screen size of the display in the virtual reality terminal, the playing size of the video to be played is scaled to adapt the target resolution of the video playing to the effective display screen size.
  • step S2 the flow chart of selecting length filling or width filling according to the second embodiment of the present invention. As shown, it includes:
  • Step S201 Calculate a play size scaling ratio of the video and a play size of the scaled video relative to the effective display screen size according to the target resolution of the video play and the effective display screen size of the display in the virtual reality terminal.
  • Step S202 scaling the play size of the video to be played according to the calculated zoom ratio, and performing double-side filling in the length direction on the area on the effective display screen where no video content is played according to the calculated one-side fill amount. Or double-sided filling in the width direction.
  • FIG. 3 is a schematic flowchart of adaptively selecting a resolution as a target resolution from an alternative multiple video resolution according to Embodiment 3 of the present invention; in this embodiment, when obtaining a target resolution of video playback A video resolution is adaptively selected from the alternative multiple video resolutions as the target resolution based on the transmission speed and the available bandwidth.
  • a plurality of resolutions a/b/c may be corresponding, and a specific code rate that can be used is calculated according to the transmission speed and the available bandwidth, and one of the alternative video resolutions is selected according to the specific code rate value.
  • Video target resolution which increases or decreases the amount of data transferred. For example, if the network bandwidth is sufficient, the code rate value is large, and the video file with high resolution is used to provide more realistic virtual reality video; if the network bandwidth is decreased, the code rate value is small, and the video file with low resolution is used to reduce the data delay. Reduce discomfort such as dizziness caused by virtual reality video delay.
  • the target resolution may also be determined according to user selection, that is, the user's operation event is captured when the target resolution of the video playback is obtained in step S1, and a fixed one of the plurality of video resolutions is selected according to the captured operation event.
  • the video resolution is used as the target resolution. For example, there are multiple video target resolution options on the display interface for the user to select, and details are not described in detail.
  • the effective display screen size of the display in the virtual reality terminal is obtained in step S1
  • the effective display screen size is represented by the long and wide pixel values of the effective display screen of the display in the virtual reality terminal.
  • step S2 may include steps S401-S404 in FIG. 4, see FIG. A schematic flowchart of performing video adjustment according to Embodiment 4 of the present invention; as shown in FIG. 4, the method includes:
  • Step S402 determining a size relationship between Sw and Y;
  • step S403 is performed; if Sw is greater than Y, step S404 is performed; if Sw is equal to Y, the resolution of the video is considered to match the effective display screen size, and no scaling and filling are required;
  • Step S403 performing double-sided filling in the width direction on the area where the video content is not played on the effective display screen, and the current adjustment process ends;
  • Step S404 Perform double-side filling in the length direction on the area where the video content is not played on the effective display screen, and the current adjustment process ends.
  • FIG. 5 is a schematic structural diagram of a video multi-resolution adaptive device in a virtual reality terminal according to a fifth embodiment of the present invention, which includes: an acquisition module 501 and a video scaling module 502 coupled to each other, wherein:
  • the obtaining module 501 is configured to obtain an effective display screen size of the display in the virtual reality terminal and obtain a target resolution of the video playing;
  • the video scaling module 502 is configured to scale the play size of the video to be played according to the target resolution of the video play and the effective display screen size of the display in the virtual reality terminal to adapt the target resolution of the video play to the effective Display screen size.
  • the effective display screen size of the display in the virtual reality terminal is represented by a long and wide pixel value of the effective display screen of the display in the virtual reality terminal.
  • the acquiring module 501 is further configured to adaptively select a video resolution as the target resolution from the candidate multiple video resolutions according to the transmission speed and the available bandwidth.
  • the obtaining module 501 is further configured to capture an operation event of the user, and select a fixed video resolution from the plurality of video resolutions as the target resolution according to the captured operation event. rate.
  • the video scaling module is further used according to the Determining the target resolution of the video playback and the effective display screen size of the display in the virtual reality terminal, calculating the playback size scaling of the video and the playback size of the scaled video, and the one-side padding in the length direction relative to the effective display screen size a quantity or a one-side fill amount in the width direction; and scaling the play size of the video to be played according to the calculated zoom ratio, and playing no video content on the effective display screen according to the calculated one-side fill amount
  • the area is double-sided in the length direction or double-sided in the width direction.
  • FIG. 6 is a schematic structural diagram of a virtual reality terminal according to a sixth embodiment of the present invention.
  • the display unit 601 includes a processor 602, and the processor 602 is configured to obtain an effective display screen size of the display in the virtual reality terminal and obtain a video.
  • the target resolution of the playback, and the playback size of the video to be played is scaled according to the target resolution of the video playback and the effective display screen size of the display in the virtual reality terminal to adapt the target resolution of the video playback to the effective Display screen size.
  • the effective display screen size of the display in the virtual reality terminal is characterized by a long and wide pixel value of an effective display screen of the display in the virtual reality terminal.
  • the processor 602 is further configured to adaptively select a video resolution from the candidate multiple video resolutions as the target resolution according to the transmission speed and the available bandwidth.
  • the processor 602 is further configured to capture an operation event of the user, and select a fixed video resolution from the plurality of video resolutions as the target resolution according to the captured operation event. rate.
  • the processor 602 is further configured to calculate a scaling ratio of a play size of the video according to a target resolution of the video playing and an effective display screen size of the display in the virtual reality terminal. And a playback amount of the scaled video relative to the effective display screen size in a one-side fill amount in the length direction or a one-side fill amount in the width direction; and a playback scale of the video to be played according to the calculated zoom ratio Scaling, and one side based on calculation
  • the filling amount is a double-side filling in the longitudinal direction or a double-side filling in the width direction on the area where the video content is not played on the effective display screen.
  • the virtual reality terminal may be a virtual reality helmet or a virtual reality glasses, and the virtual reality terminal may include one display or two displays.
  • embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the instruction device implements the functions specified in one or more blocks of the flowchart or in a flow or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明实施例提供一种视频分辨率的适应方法、装置及虚拟现实终端，该方法包括：获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。本发明实施例可以根据用户对视频分辨率的要求在多种尺寸终端设备屏幕上自适应呈现，使用户获得舒适、流畅的观看效果。

Description

一种视频分辨率的适应方法、装置及虚拟现实终端
本申请要求申请号为CN201610319088.2、申请日为2016年05月13日、发明名称为“虚拟现实终端及其视频分辨率的适应方法及装置”的中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
【技术领域】
本发明实施例属于图像处理领域，尤其涉及一种视频分辨率的适应方法、装置及虚拟现实终端。
【背景技术】
虚拟现实技术(Virtual Reality，VR)，是一种利用计算机模拟出三维空间的虚拟世界，让使用者通过视觉、听觉等产生交互式的、沉浸式的体验感受，虚拟现实技术是计算机图形学、人机交互、传感技术等领域相交叉的一项综合技术。随着来计算机硬件、网络环境等的快速发展，使得虚拟现实技术迅速的发展并且出现了很多成熟的虚拟现实系统，它们在虚拟仿真、地理信息系统、用户社交、游戏娱乐等方面有着广泛的应用。
视觉系统是VR最重要的感知通道，同时,虚拟场景的可感知也是用户在虚拟环境中进行人机交互的先决条件,所以场景显示方式及其设备是VR系统中人机交互的基本组成部分。目前常用的场景显示方式为头盔式、桌面式、投影式、手持式和自由立体显示方式等，每种显示方式又包括多种类型的屏幕尺寸。
为了在虚拟现实终端给用户呈现沉浸式体验，视频内容需要高分辨率呈现，这使得视频文件量大，通常超过1GB容量，如果下载后呈现，则在终端设备上加载过慢，并且需要昂贵复杂的终端设备，这是最先影响体验的因素，因此考虑通过网络流媒体传输给终端用户。
视频是经压缩编码后存于服务器端，其存在多种压缩格式和分辨率差别，例如标清、高清、超清等。为了能够将视频流媒体舒适、流畅的呈现给用户， 需要在各种屏幕尺寸以及多种分辨率条件下播放视频。因此亟需一种虚拟现实终端中视频分辨率的适应方法及其装置。
【发明内容】
有鉴于此，本发明实施例提供一种视频分辨率的适应方法、装置及虚拟现实终端，使用户能够舒适、流畅的在线体现虚拟现实视频播放。
本发明实施例提供一种虚拟现实终端中视频分辨率的适应方法，应用于电子终端，其包括：
获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
进一步的，在本发明的一实施例中，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
进一步的，在本发明的一实施例中，获得视频播放的目标分辨率包括：根据传输速度和可用带宽，从备选的多种视频分辨中选取一视频分辨率作为目标分辨率。
进一步的，在本发明的一实施例中，获得视频播放的目标分辨率包括：捕获用户的操作事件，根据捕获到的操作事件，从多种视频分辨率中选择一固定视频分辨率作为目标分辨率。
进一步的，在本发明的一实施例中，根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸包括：
根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所 述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；
根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
本发明实施例提供一种虚拟现实终端中视频分辨率的适应装置，其包括：
获取模块，获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
视频缩放模块，用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
进一步的，在本发明的一实施例中，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
进一步的，在本发明的一实施例中，所述获取模块进一步用于根据传输速度和可用带宽，从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率。
进一步的，在本发明的一实施例中，所述获取模块进一步用于捕获用户的操作事件，根据捕获到的操作事件，从多种视频分辨率中选择一固定视频分辨率作为目标分辨率。
进一步的，在本发明的一实施例中，所述视频缩放模块进一步用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；以及根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
本发明实施例提供一种虚拟现实终端，其包括显示器、处理器，处理器用 于获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率，以及根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
本发明实施例提供一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储程序指令，当终端所述程序指令时，用于执行：
获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
本发明实施例提供一种计算机程序产品，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当程序指令被终端执行时，使所述终端执行上述的方法。
本发明实施例中，通过获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；以及根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸，从而能够根据用户对视频分辨率的要求在多种尺寸虚拟现实终端设备屏幕上自适应呈现，使用户获得舒适、流畅的观看效果。
【附图说明】
为了更清楚地说明本发明实施例或现有技术中的技术方案，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中记载的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
图1为本发明实施例一一种虚拟现实终端中视频分辨率的适应方法流程示意图；
图2为本发明实施例二选择单侧填充的流程示意图；
图3为本发明实施例三从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率的流程示意图；
图4为本发明实施例四进行视频调整的流程示意图；
图5为本发明实施例五一种虚拟现实终端中视频多分辨率的自适应装置结构示意图；以及
图6为本发明实施例六虚拟现实终端结构示意图。
【具体实施方式】
通过获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；以及根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸，从而能够根据用户对视频分辨率的要求在多种尺寸虚拟现实终端设备屏幕上自适应呈现，使用户获得舒适、流畅的观看效果当然，实施本发明实施例的任一技术方案必不一定需要同时达到以上的所有优点。
为了使本领域的人员更好地理解本发明实施例中的技术方案，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所获得的所有其他实施例，都应当属于本发明保护的范围。
下面结合本发明附图进一步说明本发明具体实现。
本发明提供一种虚拟现实终端中视频分辨率的适应方法及其装置，通常应用于虚拟现实视频点播网络中，如果视频的分辨率与有效显示屏幕的尺寸匹配，直接进行播放；如果不匹配，则执行下述实施例的技术方案。
参见图1，为本发明实施例一虚拟现实终端中视频分辨率的适应方法流程示意图，其可以包括：
步骤S1：获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率。
具体的，常见分辨率根据其在显示器上显示的比例(长宽比)的不同会有不同，详细如下：
表一
Figure PCTCN2016109555-appb-000001
另外，分辨率也跟视频清晰度有关，清晰度有标清、超清、高清，广播电视和院线电影，对应的分辨率如表二：
表二
Figure PCTCN2016109555-appb-000002
步骤S2，根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
本实施例中，如果视频目标分辨率与有效显示屏幕尺寸不匹配，例如视频的目标分辨率为1280x720，而有效显示屏幕尺寸较小或者较大，使得视频在播放时画面超出了有效显示屏幕的尺寸，或者相反只占据了有效显示屏幕尺寸上很小面积，导致的显示不协调，则步骤S2中可以参见图2，为本发明实施例二选择长度填充或宽度填充的流程示意图；如图2所示，其包括：
步骤S201：根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；
步骤S202：根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
参见图3，为本发明实施例三从备选的多种视频分辨中自适应选取一分辨率作为目标分辨率的流程示意图；本实施例中，在获得视频播放的目标分辨率时 根据传输速度和可用带宽，从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率。
具体地的，对于一视频文件可对应多个分辨率a/b/c，根据传输速度和可用带宽计算可采用的特定码率，根据特定码率值从备选的多种视频分辨中选取一视频目标分辨率，从而增加或减少数据传输量。例如若网络带宽充足，则码率值大，采用分辨率高的视频文件，提供更加逼真的虚拟现实视频；若网络带宽下降，则码率值小，采用分辨率低的视频文件，减少数据延迟，降低因虚拟现实视频延迟带来的眩晕等不适感。
可替代地，也可以根据用户选择来确定目标分辨率，即步骤S1中获得视频播放的目标分辨率时捕获用户的操作事件，根据捕获到的操作事件，从多个视频分辨率中选择一固定视频分辨率作为目标分辨率。比如在显示界面上有多个视频目标分辨率选项，供用户进行选择，详细不再赘述。
本实施中，当步骤S1中获得虚拟现实终端中显示器的有效显示屏幕尺寸时采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征有效显示屏幕尺寸。
将显示屏幕长度像素值设为X，显示屏幕宽度像素值设为Y，将视频长度像素值设为Xv，视频宽度像素值设为Yv，视频的分辨率为Xv*Yv，缩放比例设为scale，目标分辨率则为Scale*Xv*Yv；长度方向的单侧填充量设为offsetX，宽度方向的单侧填充量offsetY，则步骤S2可以包括图4中的步骤S401-S404，参见图4，为本发明实施例四进行视频调整的流程示意图；如图4所示，其包括：
步骤S401：计算Sw＝X Yv/Xv，
步骤S402：判断Sw与Y的大小关系；
若Sw小于Y，则执行步骤S403；若Sw大于Y，则执行步骤S404；若Sw等于Y，则认为视频的分辨率与有效显示屏幕尺寸匹配，无须进行缩放和填充；
步骤S403：对所述有效显示屏幕上无视频内容播放的区域进行宽度方向的双侧填充，本次调整流程结束；
步骤S403中在填充时，首先计算缩放比例scale＝Y/Yv，然后根据计算的缩放比例计算宽度方向的单侧填充量offsetY＝(Y-Yv scale)/2，在有效显示屏幕上无视频内容播放的区域的宽度方向左右填充宽度等于offsetY＝(Y-Yv scale)/2的黑边；
步骤S404：对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充，本次调整流程结束。
步骤S404在填充时，可以首先计算缩放比例scale＝X/Xv，根据计算出的缩放比例计算长度方向的单侧填充量offsetX＝(X-Xv scale)/2，从而在有效显示屏幕上无视频内容播放的区域的长度方向上下填充长度等于offsetX＝(X-Xv scale)/2的黑边。
参见图5，为本发明实施例五虚拟现实终端中视频多分辨率的自适应装置结构示意图，其包括：相互耦接的获取模块501以及视频缩放模块502，其中：
获取模块501，用于获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
视频缩放模块502，用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
本实施例中，或其他任一实施例中，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
本实施例中，或其他任一实施例中，所述获取模块501进一步用于根据传输速度和可用带宽，从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率。
本实施例中，或其他任一实施例中，所述获取模块501进一步用于捕获用户的操作事件，根据捕获到的操作事件，从多个视频分辨率中选择一固定视频分辨率作为目标分辨率。
本实施例中，或其他任一实施例中，所述视频缩放模块进一步用于根据所 述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；以及根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
本实施例中，有关获取模块501以及视频缩放模块502进一步或者具体功能的详细解释请参见上述图1-图4，详细不再赘述。
参见图6，为本发明实施例六虚拟现实终端结构示意图；如图6所示，其包括显示器601、处理器602，处理器602用于获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率，以及根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
优选地，在本发明的任一实施例中，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
优选地，在本发明的任一实施例中，所述处理器602进一步用于根据传输速度和可用带宽，从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率。
优选地，在本发明的任一实施例中，所述处理器602进一步用于捕获用户的操作事件，根据捕获到的操作事件，从多个视频分辨率中选择一固定视频分辨率作为目标分辨率。
优选地，在本发明的任一实施例中，所述处理器602进一步用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；以及根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧 填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
本实施例中，有关处理器602进一步或者具体功能的详细解释请参见上述图1-图4，详细不再赘述。
本发明上述实施例中，虚拟现实终端可以为虚拟现实头盔，也可以为虚拟现实眼镜，虚拟现实终端可以包括一个显示器，也可以包括两个显示器。
本领域的技术人员应明白，本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在所述计算机可读存储器中的指令产生包括指令装置的制造品，所述指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (13)

  1. 一种虚拟现实终端中视频分辨率的适应方法，应用于电子设备，其特征在于，包括：
    获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
    根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
  2. 根据权利要求1所述的方法，其特征在于，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
  3. 根据权利要求1所述的方法，其特征在于，获得视频播放的目标分辨率包括：根据传输速度和可用带宽，从备选的多种视频分辨中选取一视频分辨率作为目标分辨率。
  4. 根据权利要求1所述的方法，其特征在于，获得视频播放的目标分辨率包括：捕获用户的操作事件，根据捕获到的操作事件，从多种视频分辨率中选择一固定视频分辨率作为目标分辨率。
  5. 根据权利要求1-4任一所述的方法，其特征在于，根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸包括：
    根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；
    根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据 计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
  6. 一种虚拟现实终端中视频分辨率的适应装置，其特征在于，包括：
    获取模块，获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
    视频缩放模块，用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
  7. 根据权利要求6所述的装置，其特征在于，所述虚拟现实终端中显示器的有效显示屏幕尺寸采用虚拟现实终端中显示器的有效显示屏幕的长、宽像素值表征。
  8. 根据权利要求6所述的装置，其特征在于，所述获取模块进一步用于根据传输速度和可用带宽，从备选的多种视频分辨中自适应选取一视频分辨率作为目标分辨率。
  9. 根据权利要求6所述的装置，其特征在于，所述获取模块进一步用于捕获用户的操作事件，根据捕获到的操作事件，从多种视频分辨率中选择一固定视频分辨率作为目标分辨率。
  10. 根据权利要求6-9任一所述的装置，其特征在于，所述视频缩放模块进一步用于根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，计算对视频的播放尺寸缩放比例和缩放后的视频的播放尺寸相对于所述有效显示屏幕尺寸在长度方向的单侧填充量或在宽度方向的单侧填充量；以及根据计算得到的缩放比例对要播放的视频的播放尺寸进行缩放，以及根据计算得到的单侧填充量，对所述有效显示屏幕上无视频内容播放的区域进行长度方向的双侧填充或宽度方向的双侧填充。
  11. 一种虚拟现实终端，其特征在于，包括显示器、处理器，处理器用于获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨 率，以及根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
  12. 一种非暂态计算机可读存储介质，其特征在于，所述非暂态计算机可读存储介质存储程序指令，当终端所述程序指令时，用于执行：
    获得虚拟现实终端中显示器的有效显示屏幕尺寸以及获得视频播放的目标分辨率；
    根据所述视频播放的目标分辨率以及虚拟现实终端中显示器的有效显示屏幕尺寸，对要播放的视频的播放尺寸进行缩放以使视频播放的目标分辨率适应所述有效显示屏幕尺寸。
  13. 一种计算机程序产品，其特征在于，所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当程序指令被终端执行时，使所述终端执行权利要求1-5任一所述的方法。
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