Method and apparatus for encoding and decoding image using modification of residual block
    4.
    发明授权
    Method and apparatus for encoding and decoding image using modification of residual block 有权
    使用修改残差块对图像进行编码和解码的方法和装置

    公开(公告)号:US08194989B2

    公开(公告)日:2012-06-05

    申请号:US12032056

    申请日:2008-02-15

    IPC分类号: G06K9/36

    摘要: Provided are a method and apparatus for encoding and decoding an image. In the encoding method, a residual block of a current block is transformed using a predicted block of the current block so as to increase the spatial correlation among residual values, and DCT is performed on the transformed residual block, thus improving the efficiency of transforming a block having a region that is difficult to precisely predict.

    摘要翻译: 提供了一种用于对图像进行编码和解码的方法和装置。 在编码方法中,使用当前块的预测块来变换当前块的残差块,以增加残差值之间的空间相关性,并且对变换的残差块执行DCT,从而提高变换效率 块具有难以精确预测的区域。

    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE
    5.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE 审中-公开
    用于编码和解码图像的方法和装置

    公开(公告)号:US20090225843A1

    公开(公告)日:2009-09-10

    申请号:US12398246

    申请日:2009-03-05

    IPC分类号: H04N7/26 H04N7/32

    摘要: Provided are a method and apparatus for encoding and decoding an image to reduce residual energy by using spatial residual prediction of an inter-residual in an image codec system based on spatial and temporal prediction. The method includes generating a first residual signal corresponding to a difference between an original block image and a prediction block image, generating a second residual signal corresponding to a difference between a reconstructed neighboring block image of a current block and the prediction block image, and predicting the first residual signal based on the second residual signal.

    摘要翻译: 提供了一种用于通过基于空间和时间预测通过使用图像编解码器系统中的残差的空间残差预测来对图像进行编码和解码以减少残余能量的方法和装置。 该方法包括:产生对应于原始块图像和预测块图像之间的差的第一残差信号,产生对应于当前块的重构相邻块图像与预测块图像之间的差的第二残差信号,并预测 基于第二残差信号的第一残差信号。

    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING PIXEL-BASED CONTEXT MODEL
    6.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING IMAGE USING PIXEL-BASED CONTEXT MODEL 审中-公开
    使用基于像素的语境模型编码和解码图像的方法和装置

    公开(公告)号:US20080232706A1

    公开(公告)日:2008-09-25

    申请号:US12030250

    申请日:2008-02-13

    IPC分类号: G06K9/36

    摘要: A method and apparatus for encoding and decoding an image are provided. The method includes selecting a context model by referring to previously encoded pixels that are adjacent to the current pixel for entropy-encoding a binary value of a pixel value of the current pixel, and entropy-encoding the binary value using the selected context model, thereby performing entropy-coding with high compression efficiency.

    摘要翻译: 提供了一种用于对图像进行编码和解码的方法和装置。 该方法包括通过参考与当前像素相邻的先前编码的像素来选择上下文模型,用于对当前像素的像素值的二进制值进行熵编码,并使用所选择的上下文模型对二进制值进行熵编码,从而 以高压缩效率进行熵编码。

    Method and apparatus for video encoding/decoding
    7.
    发明申请
    Method and apparatus for video encoding/decoding 审中-公开
    视频编码/解码方法和装置

    公开(公告)号:US20070098078A1

    公开(公告)日:2007-05-03

    申请号:US11591618

    申请日:2006-11-02

    IPC分类号: H04N11/04 H04N7/12

    摘要: A method and apparatus for video encoding/decoding provides a macroblock used as a unit of video division and encoding formed in various sizes, positions, and shapes to improve compression efficiency according to video characteristics. The video encoding method, divides a video into macroblocks while moving macroblocks in each row and/or each column by a predetermined-size pixel and each of the macroblocks is encoded. A video may also be divided into macroblocks at a position spaced apart from a corner of the video by a predetermined offset and each of the macroblocks is encoded. Encoding may also be performed on each sub-block and sub-blocks having the same prediction mode may be grouped into a macroblock having another form.

    摘要翻译: 用于视频编码/解码的方法和装置提供了用作以各种尺寸,位置和形状形成的视频分割和编码的单位的宏块,以根据视频特性提高压缩效率。 视频编码方法将视频分割为宏块,同时将每行和/或每列中的宏块移动预定大小的像素,并对每个宏块进行编码。 视频还可以在与视频的角距离预定偏移的位置处被划分为宏块,并且对每个宏块进行编码。 也可以对每个子块执行编码,并且具有相同预测模式的子块可以被分组成具有另一形式的宏块。