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    Encoding Screen Capture Data
    1.
    发明申请
    Encoding Screen Capture Data 有权
    编码屏幕捕获数据

    公开(公告)号：US20150195557A1

    公开(公告)日：2015-07-09

    申请号：US14530616

    申请日：2014-10-31

    Applicant: Microsoft Corporation

    Inventor： Sergey Silkin ,  Sergey Sablin ,  You Zhou ,  Chih-Lung Lin ,  Ming-Chieh Lee

    IPC: H04N19/51 ,  H04N19/176

    CPC classification number: H04N19/42 ,  H04N19/109 ,  H04N19/136 ,  H04N19/174 ,  H04N19/523

    Abstract: An input of an encoder receives moving image data comprising a sequence of frames to be encoded, each frame comprising a plurality of blocks in two dimensions with each block comprising a plurality of pixels in those two dimensions. A motion prediction module performs encoding by, for at least part of each of a plurality of said frames, coding each block relative to a respective reference portion of another frame of the sequence, with the respective reference portion being offset from the block by a respective motion vector. According to the present disclosure, the moving image data of this plurality of frames comprises a screen capture stream, and the motion prediction module is configured to restrict each of the motion vectors of the screen capture stream to an integer number of pixels in at least one of said dimensions.

    Abstract translation: 编码器的输入接收包括要编码的帧序列的运动图像数据，每个帧包括两维的多个块，每个块包括这两个维度中的多个像素。 运动预测模块对于多个所述帧中的每一个的至少一部分执行编码，相对于序列的另一帧的相应参考部分对每个块进行编码，其中各个参考部分通过相应的块从块偏移 运动矢量。 根据本公开，该多个帧的运动图像数据包括屏幕捕获流，并且运动预测模块被配置为将屏幕捕获流中的每个运动矢量限制为至少一个像素的整数个像素 的尺寸。

    ADAPTIVE QUANTIZATION FOR ENHANCEMENT LAYER VIDEO CODING
    2.
    发明申请
    ADAPTIVE QUANTIZATION FOR ENHANCEMENT LAYER VIDEO CODING 有权
    用于增强层视频编码的自适应量化

    公开(公告)号：US20150043633A1

    公开(公告)日：2015-02-12

    申请号：US14523725

    申请日：2014-10-24

    Applicant: MICROSOFT CORPORATION

    Inventor： Shankar Regunathan ,  Shijun Sun ,  Chengjie Tu ,  Chih-Lung Lin

    IPC: H04N19/124

    CPC classification number: H04N19/126 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/187 ,  H04N19/196 ,  H04N19/197 ,  H04N19/34 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.

    Abstract translation: 提出了用于在空间上和/或颜色通道之间变化的具有量化的增强层视频编码的技术和工具，以及相应的解码技术和工具。 例如，编码工具确定量化是否在图像上空间上变化，并且该工具还确定量化是否在图像中的颜色通道之间变化。 该工具在编码比特流中针对图像中的宏块发送量化参数。 在一些实现中，为了发信号通知量化参数，该工具预测量化参数，参考预测量化参数来发信号通知量化参数。 解码工具接收编码比特流，预测量化参数，并使用信号信息确定增强层视频的宏块的量化参数。 解码工具执行在空间上和/或颜色通道之间变化的逆量化。

    Multi-Layered Rate Control for Scalable Video Coding
    3.
    发明申请
    Multi-Layered Rate Control for Scalable Video Coding 有权
    用于可扩展视频编码的多层速率控制

    公开(公告)号：US20140369405A1

    公开(公告)日：2014-12-18

    申请号：US13916278

    申请日：2013-06-12

    Applicant: Microsoft Corporation

    Inventor： Cheng Chang ,  Chih-Lung Lin ,  Ming-Chieh Lee

    IPC: H04N19/31 ,  H04N19/124

    CPC classification number: H04N19/31 ,  H04N19/124 ,  H04N19/152 ,  H04N19/172 ,  H04N19/187 ,  H04N19/33 ,  H04N19/46

    Abstract: Multi-layered rate control for scalable video coding is provided. A parameter value may be calculated based on a current layer target bit rate and a current layer buffer state for a frame in a video stream. The frame may include a lower layer and one or more higher layers. A determination may then be made as to whether the current layer is the lower layer. If the current layer is the lower layer, a determination may then be made as to whether a coupling request has been received from a higher layer in the frame. If the coupling request has been received from the higher layer in the frame, the parameter value for the current layer may be increased based on a buffer state threshold value of the higher layer in the frame.

    Abstract translation: 提供了可分级视频编码的多层次速率控制。 可以基于视频流中的帧的当前层目标比特率和当前层缓冲器状态来计算参数值。 框架可以包括下层和一个或多个更高层。 然后可以确定当前层是否是下层。 如果当前层是较低层，则可以确定是否已经从帧中的较高层接收到耦合请求。 如果已经从帧中的较高层接收到耦合请求，则可以基于帧中较高层的缓冲器状态阈值来增加当前层的参数值。

    EFFICIENT MACROBLOCK HEADER CODING FOR VIDEO COMPRESSION
    5.
    发明申请
    EFFICIENT MACROBLOCK HEADER CODING FOR VIDEO COMPRESSION 有权
    高效的MACROBLOCK HEADER编码视频压缩

    公开(公告)号：US20130039414A1

    公开(公告)日：2013-02-14

    申请号：US13652405

    申请日：2012-10-15

    Applicant: Microsoft Corporation

    Inventor： Chih-Lung Lin ,  Ming-Chieh Lee

    IPC: H04N7/28 ,  H04N7/26

    CPC classification number: H04N19/20 ,  H04N19/157 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/197 ,  H04N19/46 ,  H04N19/463 ,  H04N19/51 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

    Abstract: The coded block parameters used to code blocks of image samples into structures called macroblocks are compressed more efficiently by exploiting the correlation between chrominance and luminance blocks in each macroblock. In particular, the coded block pattern for chrominance and luminance are combined into a single parameter for the macroblock and jointly coded with a single variable length code. To further enhance coding efficiency, the spatial coherence of coded block patterns can be exploited by using spatial prediction to compute predicted values for coded block pattern parameters.

    Abstract translation: 通过利用每个宏块中的色度和亮度块之间的相关性，将用于将图像样本的块编码为被称为宏块的结构的编码块参数被更有效地压缩。 特别地，用于色度和亮度的编码块图案被组合成用于宏块的单个参数，并且用单个可变长度码共同编码。 为了进一步提高编码效率，可以通过使用空间预测来计算编码块模式参数的预测值来利用编码块模式的空间相干性。

    Motion-compensated prediction of inter-layer residuals
    7.
    发明授权
    Motion-compensated prediction of inter-layer residuals 有权

    公开(公告)号：US08964854B2

    公开(公告)日：2015-02-24

    申请号：US14258959

    申请日：2014-04-22

    Applicant: Microsoft Corporation

    Inventor： Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    IPC: H04N7/12 ,  H04N19/34 ,  H04N19/61 ,  H04N19/30

    CPC classification number: H04N19/00442 ,  H04N19/30 ,  H04N19/34 ,  H04N19/61 ,  H04N19/63

    Abstract: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video.

    MOTION-COMPENSATED PREDICTION OF INTER-LAYER RESIDUALS
    8.
    发明申请
    MOTION-COMPENSATED PREDICTION OF INTER-LAYER RESIDUALS 有权
    运动补偿的层间残留预测

    公开(公告)号：US20140226718A1

    公开(公告)日：2014-08-14

    申请号：US14258959

    申请日：2014-04-22

    Applicant: Microsoft Corporation

    Inventor： Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    IPC: H04N19/34 ,  H04N19/61

    CPC classification number: H04N19/00442 ,  H04N19/30 ,  H04N19/34 ,  H04N19/61 ,  H04N19/63

    Abstract: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video.

    Abstract translation: 描述了可扩展视频编码和解码的技术和工具。 在一些实施例中，编码工具对基层视频进行编码并在基层比特流中输出经编码的基层视频。 编码工具使用相对于先前重建的层间残留视频的运动补偿来编码层间残差视频（表示输入视频和重建的基本层视频之间的差异）。 对于层间残差视频，编码工具在增强层比特流中输出运动信息和运动补偿预测残差。 解码工具接收基层比特流和增强层比特流，重构基层视频，重建层间残留视频，并组合重建的基层视频和重建层间残留视频。 对于层间残留视频使用运动补偿有助于使用单独的运动矢量和单独的编解码器用于基本层视频和层间残留视频。

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