英语语法分析

This paper presents a video encryption approach by MacroBlock permutation.

研究了基于宏块置乱的视频数据加密技术。

A fast algorithm for MPEG video segmentation based on macroblock (MB) types was presented.

提出了一种基于宏块信息的快速MPEG压缩视频场景分割算法。

Compressed parameters include type of frame, type of macroblock, DC coefficients, and motion vectors.

算法中利用的压缩参数主要有帧类型、宏块类型、DC系数、运动矢量。