Video encoding method and device and decoding method and device
    132.
    发明授权
    Video encoding method and device and decoding method and device 有权
    视频编码方法及装置及解码方法及装置

    公开(公告)号:US09350997B2

    公开(公告)日:2016-05-24

    申请号:US13876778

    申请日:2011-09-28

    摘要: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus, the video encoding method including producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a predetermined-size block; producing a transformed block by transforming the predetermined-size block by using the fast transform matrix; and performing scaling with respect to the transformed block to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.

    摘要翻译: 一种视频编码方法,视频编码装置,视频解码方法和视频解码装置,所述视频编码方法包括:基于用于预定大小块上的频率变换的变换矩阵产生快速变换矩阵; 通过使用快速变换矩阵变换预定大小的块来产生变换的块; 并且对变换的块进行缩放以校正用于频率变换的变换矩阵与快速变换矩阵之间的差异。

    Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
    140.
    发明授权
    Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit 有权
    基于第一子像素单元和第二子像素单元对视频进行编码和解码的方法和装置

    公开(公告)号:US08711939B2

    公开(公告)日:2014-04-29

    申请号:US13080121

    申请日:2011-04-05

    IPC分类号: H04N7/26

    摘要: Methods and apparatuses for encoding and decoding video are provided. The encoding method includes: performing motion estimation on a current block according to a first sub-pixel unit, and obtaining a motion vector in the first sub-pixel unit with respect to the current block; interpolating a reference picture indicated by the motion vector according to a second sub-pixel unit smaller than the first sub-pixel unit; using the interpolated reference picture, selecting a second sub-pixel in the second sub-pixel unit adjacent to a first sub-pixel in the first sub-pixel unit of the reference picture; selecting a corresponding region that has a smaller error with the current block, from among a first corresponding region of the reference picture and obtained with respect to the first sub-pixel, and a second corresponding region of the current block and obtained with respect to the selected second sub-pixel; and encoding information of the selected corresponding region.

    摘要翻译: 提供用于编码和解码视频的方法和装置。 编码方法包括:根据第一子像素单元对当前块执行运动估计,并获得关于当前块的第一子像素单元中的运动矢量; 根据比第一子像素单元小的第二子像素单元内插由运动矢量指示的参考图像; 使用内插参考图像,在与参考图片的第一子像素单元中的第一子像素相邻的第二子像素单元中选择第二子像素; 从参考图像的第一对应区域中,相对于第一子像素选择与当前块具有较小误差的对应区域,以及当前块的第二对应区域,并相对于 选择的第二子像素; 以及编码所选择的对应区域的信息。