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    System and method for enhanced DMVD processing
    61.
    发明授权
    System and method for enhanced DMVD processing 有权
    用于增强DMVD处理的系统和方法

    公开(公告)号：US09509995B2

    公开(公告)日：2016-11-29

    申请号：US13996582

    申请日：2010-12-21

    Applicant: Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang ,  Hong Jiang

    Inventor： Lidong Xu ,  Yi-Jen Chiu ,  Wenhao Zhang ,  Hong Jiang

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/51 ,  H04N19/513 ,  H04N19/44 ,  H04N19/436

    CPC classification number: H04N19/513 ,  H04N19/436 ,  H04N19/44

    Abstract: To let decoder side motion vector derivation (DMVD) coded blocks be decoded in parallel, decoder side motion estimation (ME) dependency on spatially neighboring reconstructed pixels can be removed. Mirror ME and projective ME are only performed on two reference pictures, and the spatially neighboring reconstructed pixels will not be considered in the measurement metric of the decoder side ME. Also, at a video decoder, motion estimation for a target block in a current picture can be performed by calculating a motion vector for a spatially neighboring DMVD block, using the calculated motion vector to predict motion vectors of neighboring blocks of the DMVD block, and decoding the DMVD block and the target block in parallel. In addition, determining a best motion vector for a target block in a current picture can be performed by searching only candidate motion vectors in a search window, wherein candidate motion vectors are derived from a small range motion search around motion vectors of neighboring blocks.

    Abstract translation: 为了使解码器侧运动矢量导出（DMVD）编码块并行解码，可以去除对空间相邻的重建像素的解码器侧运动估计（ME）依赖性。 镜像ME和投影ME仅在两个参考图像上执行，并且在解码器侧ME的测量度量中将不考虑空间相邻的重建像素。 此外，在视频解码器中，可以使用所计算的运动矢量来计算当前图像中的目标块的运动估计，以通过计算空间相邻的DMVD块的运动矢量来预测DMVD块的相邻块的运动矢量，以及 对DMVD块和目标块进行并行解码。 此外，通过仅在搜索窗口中仅搜索候选运动矢量来执行确定当前图片中的目标块的最佳运动矢量，其中，从围绕相邻块的运动矢量的小范围运动搜索导出候选运动矢量。

    ENHANCED REFERENCE REGION UTILIZATION FOR SCALABLE VIDEO CODING
    66.
    发明申请
    ENHANCED REFERENCE REGION UTILIZATION FOR SCALABLE VIDEO CODING 有权
    用于可扩展视频编码的增强参考区域利用

    公开(公告)号：US20140286409A1

    公开(公告)日：2014-09-25

    申请号：US13997935

    申请日：2012-12-28

    Applicant: Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Zhipin Deng ,  Xiaoxia Cai

    Inventor： Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Zhipin Deng ,  Xiaoxia Cai

    IPC: H04N19/61 ,  H04N19/91 ,  H04N19/82

    CPC classification number: H04N19/615 ,  H04N19/105 ,  H04N19/139 ,  H04N19/147 ,  H04N19/176 ,  H04N19/30 ,  H04N19/61 ,  H04N19/70

    Abstract: Techniques to identify one or more candidate reference blocks used to generate a prediction block to encode a current coding block. The candidate reference blocks can be in the same layer as the current coding block or a different layer. In addition, the candidate reference blocks do not have to be co-located with the current coding block. Motion vectors and shift vectors can be used to identify the one or more candidate reference blocks. In addition, uniform and non-uniform weighting can be applied to the one or more candidate reference blocks to generate the prediction block. Accordingly, an encoder can determine and identify reference blocks to a decoder that can provide desirable rate-distortion cost.

    Abstract translation: 用于识别用于生成预测块以编码当前编码块的一个或多个候选参考块的技术。 候选参考块可以与当前编码块或不同层位于相同的层中。 此外，候选参考块不必与当前编码块共同定位。 运动矢量和移位矢量可用于识别一个或多个候选参考块。 此外，可以对一个或多个候选参考块应用均匀和不均匀的加权以生成预测块。 因此，编码器可以确定并识别能够提供所需速率失真成本的解码器的参考块。

    SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR SCALABLE VIDEO CODING BASED ON COEFFICIENT SAMPLING
    69.
    发明申请
    SYSTEMS, METHODS, AND COMPUTER PROGRAM PRODUCTS FOR SCALABLE VIDEO CODING BASED ON COEFFICIENT SAMPLING 有权
    基于系数采样的可扩展视频编码的系统，方法和计算机程序产品

    公开(公告)号：US20140140410A1

    公开(公告)日：2014-05-22

    申请号：US13995182

    申请日：2012-06-29

    Applicant: Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Hong Jiang

    Inventor： Wenhao Zhang ,  Yi-Jen Chiu ,  Lidong Xu ,  Yu Han ,  Hong Jiang

    IPC: H04N19/30

    CPC classification number: H04N19/63 ,  H04N19/30

    Abstract: Methods, systems, and computer program products for the generation of multiple layers of scaled encoded video data compatible with the HEVC standard. Residue from prediction processing may be transformed into coefficients in the frequency domain. The coefficients may then be sampled to create a layer of encoded data. The coefficients may be sampled in different ways to create multiple respective layers. The layers may then be multiplexed and sent to a decoder. There, one or more of the layers may be chosen. The choice of certain layer(s) may be dependent on the desired attributes of the resulting video. A certain level of video quality, frame rate, resolution, and/or bit depth may be desired, for example. The coefficients in the chosen layers may then be assembled to create a version of the residue to be used in video decoding.

    Abstract translation: 用于生成与HEVC标准兼容的多层缩放编码视频数据的方法，系统和计算机程序产品。 可以将来自预测处理的残差变换为频域中的系数。 然后可以对系数进行采样以创建编码数据层。 可以以不同的方式对系数进行采样以创建多个相应的层。 然后可以将这些层复用并发送到解码器。 在那里，可以选择一个或多个层。 某些层的选择可以取决于所得到的视频的期望属性。 例如，可能需要某种级别的视频质量，帧速率，分辨率和/或比特深度。 然后可以组合所选择的层中的系数以创建要在视频解码中使用的残余的版本。

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