一种基于二维离散余弦模型的运动估计算法研究

Research on a Motion Estimation Algorithm Based on the Two-Dimensional Discrete Cosine Model

随着视频需求变大,视频编解码的要求越来越高,传统的视频编解码技术基于块匹配算法,其在同一个运动矢量场内使用相同的运动矢量,并不能很好表现像素点的细节,同时对于采用较小块划分的结构带来大量的比特信息量,介绍一种基于二维离散余弦模型的方式实现更加精确描述复杂矢量场模型,能有效表现视频序列的细节及节省比特开销。

With the development of video demand, higher and higher requirements of video code, the conventional video coding technology based on the block matching algorithm, which uses the same motion vectors in the same motion vector field, it doesn＇t has a very good performance of pixel details, also for using relatively small partition structure brought a large number of bits, introduces a two-dimensional discrete cosine model based on the way to achieve a more accurate description of complex vector field model, which can effectively describe video sequence in details and save the bits.