利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

137 条记录 (耗时 0.03 秒)

    METHOD AND APPARATUS FOR CODING OF INTRA PREDICTION MODE
    2.
    发明申请
    METHOD AND APPARATUS FOR CODING OF INTRA PREDICTION MODE 审中-公开
    内部预测模式编码的方法和装置

    公开(公告)号：US20140086323A1

    公开(公告)日：2014-03-27

    申请号：US14123093

    申请日：2012-06-14

    申请人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

    发明人： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

    IPC分类号： H04N7/32 ,  H04N7/26

    CPC分类号： H04N19/11 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1887 ,  H04N19/44 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91

    摘要： Embodiments according to the present invention configure the intra prediction mode candidates into multi-level MPM sets, which comprise at least a first-level MPM set and a second-level MPM set. Encoding or decoding a current intra prediction mode is based on the multi-level MPM sets, where one syntax element of the syntax information to be generated or decoded respectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for spectively is associated with evaluating the current intra prediction mode using the first-level MPM set. A method and apparatus for chroma intra prediction mode encoding and decoding are also disclosed. The chroma intra prediction mode set includes a Luma-based chroma prediction Mode (LM), a Direct Mode (DM) and four other modes. The codeword set comprises variable-length codewords and fixed-length codewords, and the fixed-length codewords are longer than the variable-length codewords. The variable-length codewords are used for the DM and LM, and the fixed-length codewords are used for the four other modes.

    摘要翻译： 根据本发明的实施例将帧内预测模式候选配置为包括至少第一级MPM集合和第二级MPM集合的多级MPM集合。 当前帧内预测模式的编码或解码是基于多级MPM集合，其中分别生成或解码的语法信息的一个语法元素与使用第一级MPM集合评估当前帧内预测模式相关联。 用于分光学的方法和装置与使用第一级MPM集合评估当前帧内预测模式相关联。 还公开了一种用于色度帧内预测模式编码和解码的方法和装置。 色度帧内预测模式集包括基于亮度的色度预测模式（LM），直接模式（DM）和其它四种模式。 码字组包括可变长度码字和固定长度码字，并且固定长度码字比可变长度码字长。 可变长度码字用于DM和LM，固定长度码字用于其他四种模式。

    Method and Apparatus of Transform Unit Partition with Reduced Complexity
    3.
    发明申请
    Method and Apparatus of Transform Unit Partition with Reduced Complexity 有权
    具有复杂度降低的变换单元分区的方法和装置

    公开(公告)号：US20120230411A1

    公开(公告)日：2012-09-13

    申请号：US13156552

    申请日：2011-06-09

    申请人： Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

    发明人： Shan Liu ,  Zhi Zhou ,  Shaw-Min Lei

    IPC分类号： H04N7/26

    CPC分类号： H04N19/96 ,  H04N19/119 ,  H04N19/176 ,  H04N19/70

    摘要： Three block concepts are introduced in HEVC: coding unit (CU), prediction unit (PU), and transform unit (TU). The overall coding structure is characterized by the various sizes of CU, PU and TU in a recursive fashion. For transform processing in current HEVC, a hierarchy RQT (Residual Quad Tree) is used and the TU size is related to the CU size, but independent of the PU size. This results in high encoding complexity and also causes increased processing time to process the syntax of residual quad tree. Accordingly a modified transform unit partition with reduced complexity is disclosed. According to an embodiment, the TU size may be restricted to the minimum of PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In another embodiment, the maximum TU size equals to maximum of PU width and height, and the minimum TU size equals to minimum of the PU width and height, except for a 2N×2N coding unit with the 2N×2N partition type. In yet another embodiment, the TU size is selected between 2N×2N and N×N for the 2N×2N, 2N×N, N×2N and N×N partition types. The syntax element, split_transform_flag, is used to indicate the selection of 2N×2N or N×N TU size when needed. Furthermore, a method with reduced complexity of selecting the best merge candidate for the 2N×2N CU merge mode is disclosed. The method relies on R-D cost associated with the motion vector of merge candidate to reduce required computation.

    摘要翻译： 在HEVC中引入了三个块概念：编码单元（CU），预测单元（PU）和变换单元（TU）。 总体编码结构的特征在于以递归方式各种尺寸的CU，PU和TU。 对于当前HEVC中的变换处理，使用层次RQT（残余四叉树），并且TU大小与CU大小相关，但与PU大小无关。 这导致高编码复杂度，并且还导致处理剩余四叉树语法的处理时间增加。 因此，公开了具有降低的复杂性的修改的变换单元分区。 根据实施例，除了具有2N×2N分区类型的2N×2N编码单元之外，TU大小可以被限制为PU宽度和高度的最小值。 在另一个实施例中，除了具有2N×2N分区类型的2N×2N编码单元之外，最大TU大小等于PU宽度和高度的最大值，并且最小TU大小等于PU宽度和高度的最小值。 在另一个实施例中，对于2N×2N，2N×N，N×2N和N×N个分区类型，在2N×2N和N×N之间选择TU大小。 语法元素split_transform_flag用于在需要时指示2N×2N或N×N TU大小的选择。 此外，公开了一种选择2N×2N CU合并模式的最佳合并候选的复杂度降低的方法。 该方法依赖于与合并候选的运动矢量相关联的R-D成本来减少所需的计算。

    METHOD AND APPARATUS FOR BLOCK PARTITION OF CHROMA SUBSAMPLING FORMATS
    5.
    发明申请
    METHOD AND APPARATUS FOR BLOCK PARTITION OF CHROMA SUBSAMPLING FORMATS 有权
    用于分离色谱分离格式的方法和装置

    公开(公告)号：US20150304662A1

    公开(公告)日：2015-10-22

    申请号：US14378969

    申请日：2013-04-12

    申请人： Shan LIU ,  Shaw-Min LEI

    发明人： Shan Liu ,  Shaw-Min Lei

    IPC分类号： H04N19/159 ,  H04N19/96 ,  H04N19/186 ,  H04N19/61 ,  H04N19/122 ,  H04N19/176

    CPC分类号： H04N19/159 ,  H04N19/122 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61 ,  H04N19/96

    摘要： A method and apparatus for video data processing for video in YUV422 or YUV 444 formats are disclosed. In one embodiment, for a 2N×2N luma coding unit (CU) in YUV422 format, the transform process partitions residue data corresponding to the 2N×2N luma CU and the N×2N chroma CU into square luma and chroma transform units (TUs). The residue data associated with the luma and the chroma CUs are generated by applying prediction process to the luma CU and the chroma CU. The transform process is independent of prediction block size or prediction mode associated with the prediction process. In another embodiment, the prediction process splits the CU into two prediction blocks. Transform process is applied on the chroma residue data corresponding to the chroma CU to form one or more chroma TUs, wherein the transform process is dependent on CU size and prediction block size, or CU size and prediction mode.

    摘要翻译： 公开了一种用于YUV422或YUV444格式的视频的视频数据处理的方法和装置。 在一个实施例中，对于YUV422格式的2N×2N亮度编码单元（CU），变换处理将对应于2N×2N亮度CU和N×2N色度CU的残留数据划分为平方亮度和色度变换单位（TU） 。 通过对亮度CU和色度CU应用预测处理来生成与亮度和色度CU相关联的残差数据。 变换过程与预测过程相关的预测块大小或预测模式无关。 在另一个实施例中，预测过程将CU分成两个预测块。 变换处理应用于与色度CU对应的色度残差数据，以形成一个或多个色度TU，其中变换过程取决于CU大小和预测块大小，或CU尺寸和预测模式。

    Apparatus and method of constrained partition size for high efficiency video coding
    6.
    发明授权
    Apparatus and method of constrained partition size for high efficiency video coding 有权
    用于高效率视频编码的约束分区大小的装置和方法

    公开(公告)号：US08526495B2

    公开(公告)日：2013-09-03

    申请号：US13012811

    申请日：2011-01-25

    申请人： Shan Liu ,  Yu-Wen Huang ,  Yung-Chang Chang ,  Shaw-Min Lei

    发明人： Shan Liu ,  Yu-Wen Huang ,  Yung-Chang Chang ,  Shaw-Min Lei

    IPC分类号： H04B1/66 ,  H04N7/26

    CPC分类号： H04N19/177 ,  H04N19/119 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

    摘要： An apparatus and method for video coding and decoding with constrained PU partition are disclosed. In the High Efficient Video Coding (HEVC) system, rate-distortion function or other performance criterion usually is evaluated for various CU partition and PU partition during the encoding process in order to select a configuration with best possible performance. The PU design in the current HEVC development results in some redundancy that causes rate-distortion function or other performance criterion repeatedly evaluated for same PU configuration. Accordingly, constrained PU partition is developed to eliminate or reduce the redundancy in processing. Furthermore, necessary syntax to convey the information related to constrained PU partition between an encoder and a decoder is developed. Systems embodying the present invention has been shown to result in sizeable reduction in encoding and decoding time while the performance in terms of RD-rate remains approximately the same or slightly higher than a conventional HEVC system.

    摘要翻译： 公开了一种用于具有约束PU分区的视频编码和解码的装置和方法。 在高效视频编码（HEVC）系统中，通常在编码过程中针对各种CU分区和PU分区评估速率失真函数或其他性能标准，以选择具有最佳性能的配置。 在当前HEVC开发中的PU设计导致一些冗余，导致对相同PU配置重复评估的速率失真功能或其他性能标准。 因此，开发了约束PU分区以消除或减少处理中的冗余。 此外，开发了在编码器和解码器之间传送与约束PU分区有关的信息的必要语法。 已经显示体现本发明的系统导致编码和解码时间的相当大的降低，而在RD速率方面的性能保持与常规HEVC系统大致相同或略高。