Motion compensating apparatus, moving image coding apparatus and method
    10.
    发明授权
    Motion compensating apparatus, moving image coding apparatus and method 失效
    运动补偿装置,运动图像编码装置及方法

    公开(公告)号:US07075989B2

    公开(公告)日:2006-07-11

    申请号:US10837704

    申请日:2004-05-04

    IPC分类号: H04N7/12

    摘要: The present invention provides a motion compensating apparatus which is capable of enhancing the overall coding efficiency by taking the amount of coded information used to code a motion vector as well as the sum of difference absolute values of estimated differences into consideration in order to determine an optimal vector. The motion compensating apparatus includes: a motion compensation processing unit for outputting a motion vector between an input image and a reference image, and an estimated image which is extracted from the reference image in accordance with the motion vector; a unit for calculating the sum of difference absolute values, as a distortion amount calculating unit, to obtain a distortion amount between the input image and the estimated image; a vector value coding unit for receiving the motion vector to code the motion vector thus inputted thereto to output a vector coded amount; and an optimal vector determining unit for receiving the motion vector, the distortion amount and the vector coded amount to obtain, for all of a plurality of motion vectors to be evaluated, an evaluation function calculated from the distortion amount and the vector coded amount to output as an optimal vector the motion vector in which the evaluation function exhibits a minimum value.

    摘要翻译: 本发明提供一种运动补偿装置,其能够通过考虑用于编码运动矢量的编码信息的量以及估计差的绝对值之和来提高整体编码效率,以便确定最优 向量。 运动补偿装置包括:运动补偿处理单元,用于输出输入图像和参考图像之间的运动矢量,以及根据运动矢量从参考图像中提取的估计图像; 用于计算差分绝对值之和作为失真量计算单元获得输入图像与估计图像之间的失真量的单元; 矢量值编码单元,用于接收运动矢量以对输入的运动矢量进行编码,以输出矢量编码量; 以及最佳向量确定单元,用于接收所述运动矢量,所述失真量和矢量编码量,以针对要评估的多个运动矢量的全部获得从所述失真量和所述矢量编码量计算出的评估函数以输出 作为评估函数呈现最小值的运动矢量的最佳向量。