Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer
    22.
    发明授权
    Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer 有权
    基于多层视频编码器有效压缩运动矢量的方法和装置

    公开(公告)号:US08520962B2

    公开(公告)日:2013-08-27

    申请号:US13355619

    申请日:2012-01-23

    IPC分类号: G06K9/36 G06K9/46

    摘要: A method and apparatus of improving the compression efficiency of a motion vector is provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

    摘要翻译: 提供了提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量,从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量,第二帧速率大于 第一帧速率,如果在相同时刻没有基本层帧的情况下,通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧,并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差,以及所获得的基本层中的运动矢量。

    Method and apparatus for encoding and decoding video signal according to directional intra-residual prediction
    23.
    发明授权
    Method and apparatus for encoding and decoding video signal according to directional intra-residual prediction 有权
    根据定向残差预测对视频信号进行编码和解码的方法和装置

    公开(公告)号:US08111745B2

    公开(公告)日:2012-02-07

    申请号:US11490199

    申请日:2006-07-21

    IPC分类号: H04N7/12

    摘要: A method and apparatus for encoding and decoding a video signal according to directional intra-residual prediction. The video encoding method of the present invention includes calculating first residual data by performing directional intra-prediction on a first block of a base layer with reference to a second block of the base layer, calculating second residual data by performing directional intra-prediction on a third block of an enhancement layer that corresponds to the first block of the base layer with reference to a fourth block of the enhancement layer that corresponds to the second block of the base layer, and encoding the third block according to the directional intra-residual prediction by obtaining third residual data that is a difference between the first residual data and the second residual data.

    摘要翻译: 一种根据定向残差预测对视频信号进行编码和解码的方法和装置。 本发明的视频编码方法包括通过参照基本层的第二块对基本层的第一块进行定向帧内预测来计算第一残差数据,通过对基本层进行定向帧内预测来计算第二残差数据 增强层的第三块,其对应于基本层的第一块,参考对应于基本层的第二块的增强层的第四块,并且根据定向残差预测对第三块进行编码 通过获得作为第一残差数据和第二残差数据之间的差的第三残差数据。

    Video coding method and apparatus
    30.
    发明申请
    Video coding method and apparatus 审中-公开
    视频编码方法及装置

    公开(公告)号:US20060088096A1

    公开(公告)日:2006-04-27

    申请号:US11254763

    申请日:2005-10-21

    摘要: A method and apparatus are provided for improving compression efficiency or picture quality by selecting a wavelet transform technique suitable to input video/image scene characteristics in video/image compression. The video encoder includes a temporal transform module that removes temporal redundancy of an input frame and generates a residual frame, a selection module that selects an appropriate wavelet filter among a plurality of wavelet filters having different taps according to a spatial correlation of the residual frame, a wavelet transform module that generates wavelet coefficients by performing wavelet transform on the residual frame using the selected wavelet filter, and a quantization module that quantizes the wavelet coefficients.

    摘要翻译: 提供一种通过选择适合于在视频/图像压缩中输入视频/图像场景特性的小波变换技术来提高压缩效率或图像质量的方法和装置。 视频编码器包括时间变换模块,其消除输入帧的时间冗余并产生残余帧;选择模块,其根据残差帧的空间相关性在具有不同抽头的多个小波滤波器中选择适当的小波滤波器; 小波变换模块,通过使用选择的小波滤波器对残差帧进行小波变换来生成小波系数;量化模块,其量化小波系数。