这篇文章为颜色录像的无损失的压缩介绍一个编码方法。在建议方法,四维的矩阵沃尔什变换(4D-M-Walsh-T ) 被用于颜色录像编码。一个颜色录像序列的整个 n 框架被划分成是图象宽度(行部件)的3D块,图象高度(列部件),在一个颜色录像序列的图象宽度(垂直部件),和 n 的毗邻(深度部件)装裱( Y , U 或 V )录像顺序。类似于 2D-Walsh 变换的方法, 4D-M-Walsh-T 是每个次矩阵的 4D 亚矩阵,和尺寸是 n。方法能充分同时利用关联为无损失的压缩编码并且减少颜色录像的冗余性,例如在一个框架或一个录像的不同框架的邻近的象素。试验性的结果证明建议方法能为颜色录像顺序完成更高无损失的压缩比率(CR ) 。
This article presents a coding method for the lossless compression of color video. In the proposed method, four-dimensional matrix Walsh transform (4D-M-Walsh-T) is used for color video coding. The whole n frames of a color video sequence are divided into '3D-blocks' which are image width (row component), image height (column component), image width (vertical component) in a color video sequence, and adjacency (depth component) of n frames (Y, U or V) of the video sequence. Similar to the method of 2D-Walsh transform, 4D-M-Walsh-T is 4D sub-matrices, and the size of each sub-matrix is n. The method can fully utilize correlations to encode for lossless compression and reduce the redundancy of color video, such as adjacent pixels in one frame or different frames of a video at the same time. Experimental results show that the proposed method can achieve higher lossless compression ratio (CR) for the color video sequence.