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    • 21. 发明专利
    • Motion estimation system and method
    • 运动估计系统和方法
    • JP2006217644A
    • 2006-08-17
    • JP2006067681
    • 2006-03-13
    • Scientific-Atlanta Incサイエンティフィック−アトランタ, インコーポレイテッド
    • RODRIGUEZ ARTURO ASIMERLY TIMOTHY WPATEL NEILESH R
    • H04N7/32G06T7/20H04N7/26
    • H04N19/433H04N19/51
    • PROBLEM TO BE SOLVED: To provide a method for doing motion estimation in video encoding. SOLUTION: In this method, a predictor block which is a best match for a current block is located by comparing the current block of the picture 220 currently being encoded with candidate blocks that are located using the motion vectors blocks that are either spatially or temporally proximate to the current block. If a given proximate block does not have a usable motion vector, another proximate block is used. The temporally proximate blocks are blocks in the last picture to be encoded prior to the current block. The candidate blocks are further used to define a minimized portion of a search space which fits inside the local RAM of a processor used to compare the current block with the candidates. The minimized search space 219 is used in a two-phase method. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种在视频编码中进行运动估计的方法。 解决方案:在该方法中,通过将当前正被编码的图像220的当前块与使用空间上的运动矢量块定位的候选块进行比较来定位与当前块最佳匹配的预测块 或临时接近当前块。 如果给定的邻近块不具有可用的运动矢量,则使用另一个邻近块。 时间上接近的块是在当前块之前要编码的最后一幅图像中的块。 候选块还用于定义搜索空间的最小化部分,其适合用于将当前块与候选者进行比较的处理器的本地RAM内部。 最小化搜索空间219以两相方法使用。 版权所有(C)2006,JPO&NCIPI