阅读说明：本技术 视频序列的图像编解码方法和装置 (Image coding and decoding method and device for video sequence ) 是由 陈旭 郑建铧 于 2019-07-29 设计创作，主要内容包括：本申请提供一种视频序列的图像编解码方法和装置。本申请图像解码方法,包括：确定待解码块的运动信息；根据运动信息获取待解码块的第一解码预测块；在预测参考图像块内进行第一精度的运动搜索以获取至少两个第二解码预测块；对第一解码预测块进行下采样以获得第一采样像素点矩阵；对至少两个第二解码预测块进行下采样以获得至少两个第二采样像素点矩阵；分别计算第一采样像素点矩阵和每个第二采样像素点矩阵的差异,并将差异最小的第二采样像素点矩阵对应的运动矢量作为目标预测运动矢量；根据目标预测运动矢量获取待解码块的目标解码预测块,并根据目标解码预测块对待解码块进行解码。本申请降低了差异比较的计算量,提高图像编码效率。(The application provides a method and a device for coding and decoding images of a video sequence. The image decoding method comprises the following steps: determining motion information of a block to be decoded; acquiring a first decoding prediction block of a block to be decoded according to the motion information; performing a motion search of a first precision within the prediction reference picture block to obtain at least two second decoded prediction blocks; down-sampling the first decoded prediction block to obtain a first sampled pixel matrix; down-sampling the at least two second decoding prediction blocks to obtain at least two second sampling pixel point matrixes; calculating the difference between the first sampling pixel matrix and each second sampling pixel matrix respectively, and taking the motion vector corresponding to the second sampling pixel matrix with the minimum difference as a target prediction motion vector; and acquiring a target decoding prediction block of the block to be decoded according to the target prediction motion vector, and decoding the block to be decoded according to the target decoding prediction block. The method and the device reduce the calculated amount of difference comparison and improve the image coding efficiency.)