关键词: MPEG 运动矢量 分割镜头 视频检索

Abstract:

The scene change detection algorithm is the key to video content-based retrieval. In this paper we propose an algorithm that detects scene changes from the MPEG compressed video bit stream, and explain the principle and how to implement the algorithm. This algorithm is based on the comparison of the m ajority of intra-macrro-blocks and the macro-block type of B-frames from the bit stream. By partly decoding on the bit stream, computational complexity  is reduced and experimental results show that the presented algorithm can provide satisfactory shot segmentation results.

Key words: MPEG;motion vectors, scene change detection, video content-based retrieval