Coding multiview video plus depth content
    21.
    发明授权
    Coding multiview video plus depth content 有权
    编码多视点视频加深度内容

    公开(公告)号:US09565449B2

    公开(公告)日:2017-02-07

    申请号:US13414515

    申请日:2012-03-07

    IPC分类号: H04N13/00 H04N19/597

    CPC分类号: H04N19/597

    摘要: This disclosure describes techniques for coding 3D video block units. In one example, a video encoder is configured to receive one or more texture components from at least a portion of an image representing a view of three dimensional video data, receive a depth map component for at least the portion of the image, code a block unit indicative of pixels of the one or more texture components for a portion of the image and the depth map component. The coding comprises receiving texture data for a temporal instance of a view of video data, receiving depth data corresponding to the texture data for the temporal instance of the view of video data, and encapsulating the texture data and the depth data in a view component for the temporal instance of the view, such that the texture data and the depth data are encapsulated within a common bitstream.

    摘要翻译: 本公开描述了用于编码3D视频块单元的技术。 在一个示例中,视频编码器被配置为从表示三维视频数据的视图的图像的至少一部分接收一个或多个纹理分量,接收图像的至少部分的深度图分量,编码块 指示图像的一部分和深度图分量的一个或多个纹理分量的像素的单元。 编码包括接收视频数据视图的时间实例的纹理数据,接收对应于视频数据视图的时间实例的纹理数据的深度数据,以及将纹理数据和深度数据封装在视图分量中 视图的时间实例,使得纹理数据和深度数据被封装在公共位流中。

    Signaling video samples for trick mode video representations
    22.
    发明授权
    Signaling video samples for trick mode video representations 有权
    用于特技模式视频表示的信令视频样本

    公开(公告)号:US09485546B2

    公开(公告)日:2016-11-01

    申请号:US12908593

    申请日:2010-10-20

    摘要: This disclosure describes techniques relevant to HTTP streaming of media data. According to these techniques, a server device may signal a byte range for at least one intra-decodable (I-frame) of a video fragment. According to the techniques of this disclosure, a client device may communicate a request to a server device to retrieve the at least one I-frame based on the signaled byte range, and use the retrieved I-frame to provide a high speed version of a video presentation that includes the at least one I-frame. A high speed version of a video presentation may be a trick mode of the video presentation, such as a fast forward or fast rewind version of the video presentation.

    摘要翻译: 本公开描述了与媒体数据的HTTP流相关的技术。 根据这些技术,服务器设备可以向视频片段的至少一个可解码(I帧)信号发送字节范围。 根据本公开的技术,客户端设备可以将服务器设备的请求传达到基于信号的字节范围来检索至少一个I帧,并使用所检索的I帧来提供高速版本的 包括至少一个I帧的视频呈现。 视频呈现的高速版本可以是视频呈现的特技模式,例如视频呈现的快进或快退。

    Context-adaptive coding video data
    23.
    发明授权
    Context-adaptive coding video data 有权
    上下文自适应编码视频数据

    公开(公告)号:US09379736B2

    公开(公告)日:2016-06-28

    申请号:US13485225

    申请日:2012-05-31

    摘要: In an example, aspects of this disclosure relate to a method of coding data that includes coding a sequence of bins according to a context adaptive entropy coding process. A current coding cycle used to code at least one bin of the sequence of bins includes determining a context for the bin; selecting a probability model based on the context, wherein the probability model is updated based on a value of a previous bin coded with the context and coded at least two coding cycles prior to the current coding cycle; applying the probability model to code the bin; and updating the probability model based on a value of the bin.

    摘要翻译: 在一个示例中,本公开的方面涉及一种编码数据的方法,所述数据包括根据上下文自适应熵编码处理来对码序列进行编码。 用于对码序列的至少一个bin进行编码的当前编码周期包括确定所述仓的上下文; 基于所述上下文选择概率模型,其中,所述概率模型基于用所述上下文编码的先前存储块的值进行更新,并且在当前编码周期之前编码至少两个编码周期; 应用概率模型对仓进行编码; 并且基于所述仓的值更新所述概率模型。

    Refinement coefficient coding based on history of corresponding transform coefficient values
    24.
    发明授权
    Refinement coefficient coding based on history of corresponding transform coefficient values 有权
    基于相应变换系数值的历史的精细系数编码

    公开(公告)号:US09319700B2

    公开(公告)日:2016-04-19

    申请号:US11868009

    申请日:2007-10-05

    申请人: Marta Karczewicz

    发明人: Marta Karczewicz

    摘要: This disclosure describes techniques for coding of refinement coefficients of an enhancement layer in a scalable video coding (SVC) scheme. According to this disclosure, a method may comprise evaluating a history of transform coefficient values associated with one or more previous layers of the SVC scheme, and estimating one or more refinement coefficient values associated with a current layer of the SVC scheme based on the history. On the encoding side, the coding process may include excluding information for one or more refinement coefficient values from the bitstream and signaling to the decoder that such information is excluded from the bitstream. On the decoding side, coding process include parsing the bitstream to identify information that signals to the decoder that information is excluded from the bitstream, and generating such information based on the history associated with one or more previous layers of the SVC scheme.

    摘要翻译: 本公开描述了用于在可缩放视频编码(SVC)方案中对增强层的细化系数进行编码的技术。 根据本公开,一种方法可以包括评估与SVC方案的一个或多个先前层相关联的变换系数值的历史,以及基于历史来估计与SVC方案的当前层相关联的一个或多个细化系数值。 在编码方面,编码处理可以包括从比特流排除一个或多个细化系数值的信息,并且向解码器发送信号从比特流中排除。 在解码侧,编码处理包括解析比特流,以识别向比特流排除信息的信息,并且基于与SVC方案的一个或多个先前层相关联的历史生成这样的信息。

    Adaptive motion resolution for video coding
    27.
    发明授权
    Adaptive motion resolution for video coding 有权
    视频编码的自适应运动分辨率

    公开(公告)号:US09237355B2

    公开(公告)日:2016-01-12

    申请号:US12945170

    申请日:2010-11-12

    摘要: A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.

    摘要翻译: 视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码,并且将所选精度发信号。 在一个示例中,一种装置包括:视频编码器,当使用八分之一像素的精确运动矢量被确定为优于一块时,使用八分之一像素精度的运动矢量对视频数据块进行编码 并且生成指示使用该块的八分之一像素精度运动矢量的信号值,以及输出接口以输出编码块和信号值。 视频解码器可以被配置为接收信号值和编码块,分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码,并且基于该确定对块进行解码 。

    WEIGHTED PREDICTION BASED ON VECTORIZED ENTROPY CODING
    29.
    发明申请
    WEIGHTED PREDICTION BASED ON VECTORIZED ENTROPY CODING 有权
    基于加权熵编码的加权预测

    公开(公告)号:US20150281695A1

    公开(公告)日:2015-10-01

    申请号:US14739858

    申请日:2015-06-15

    摘要: A receiver receives coded coefficient values of enhancement layer video blocks. A control unit defines one or more vectors of transform coefficients for decoding of the enhancement layer blocks, and selects a prediction mode for the enhancement layer blocks based on the vectorized entropy decoding. Each of the vectors comprises one or more of the transform coefficients in a scan order having an end position indicated by a vector control signal. The control unit selects weighted prediction when the vectorized entropy decoding establishes two or more vectors, and selects non-weighted prediction when the defined vectorized entropy coding establishes a single vector. A prediction unit performs predictive decoding based on the prediction mode. An entropy decoding unit performs the vectorized entropy decoding. A scanning unit scans the enhancement layer video blocks from the vectors into two-dimensional blocks of transform coefficients, and separately entropy decodes the vectors.

    摘要翻译: 接收机接收增强层视频块的编码系数值。 控制单元定义用于解码增强层块的变换系数的一个或多个向量,并且基于向量化熵解码来选择用于增强层块的预测模式。 每个矢量包括具有由矢量控制信号指示的结束位置的扫描顺序中的一个或多个变换系数。 当向量化熵解码建立两个或更多个向量时,控制单元选择加权预测,当定义的向量化熵编码建立单个向量时,选择非加权预测。 预测单元基于预测模式执行预测解码。 熵解码单元执行向量化熵解码。 扫描单元将增强层视频块从向量扫描成变换系数的二维块,并且分别熵解码向量。

    Depth estimation based on global motion and optical flow
    30.
    发明授权
    Depth estimation based on global motion and optical flow 有权
    基于全局运动和光流的深度估计

    公开(公告)号:US09123115B2

    公开(公告)日:2015-09-01

    申请号:US12953310

    申请日:2010-11-23

    IPC分类号: H04N13/00 H04N15/00 G06T7/00

    CPC分类号: G06T7/0071 G06T7/579

    摘要: This disclosure describes techniques for estimating a depth of image objects for a two-dimensional (2D) view of a video presentation. For example, an initial indication of depth (e.g., an optical flow) may be determined for a 2D view. The initial indication of depth may be used to estimate global motion, e.g., motion of an observer (e.g., camera), of the 2D view. The initial indication of depth may be modified based on the estimation of global motion to create a global motion-adjusted indication of depth. The global motion-adjusted depth indication may be used to create a depth map for the 2D view, which may be used to generate an alternative view of the video presentation that may be used to display a three-dimensional (3D) video presentation.

    摘要翻译: 本公开描述了用于估计视频呈现的二维(2D)视图的图像对象的深度的技术。 例如,可以为2D视图确定深度的初始指示(例如,光流)。 深度的初始指示可以用于估计2D视图的全局运动,例如观察者(例如,相机)的运动。 可以基于全局运动的估计来修改深度的初始指示,以创建全局运动调整的深度指示。 全局运动调整深度指示可用于为2D视图创建深度图,其可以用于生成可用于显示三维(3D)视频呈现的视频呈现的替代视图。