摘要
针对传统的非压缩域镜头分割算法数据量大、运算量大和效率低的问题,提出了一种基于I帧的压缩域镜头分割算法.该算法首先根据MPEG-2压缩标准,从视频流中提取DCT系数,然后经过预处理得到每一帧的DC系数,最后依DC系数建立信息系统并得到镜头分割模型.实验结果表明,此算法相对于传统的非压缩域算法,可大大减少运算量和数据量,提高算法的效率.
Aimed at overcoming the amount of computing and low efficiency of traditional shot segment methods in non-compressed domain. This paper presents a new compressed domain shot segment method based on Ⅰ frame. The method extracts coefficients of DCT from the video stream according to MPEG standard firstly. And then it gets the DC coefficients after the preprocessing. At last, it constructs the information system using DC coefficients and gets shot segment model. Experimental results show that the method can reduce the amount of computing and data obviously and it results in increasing efficiency, compared with traditional shot segment methods.
出处
《海南大学学报（自然科学版）》
CAS
2008年第3期273-277,共5页
Natural Science Journal of Hainan University
基金
甘肃省自然科学基金(3ZS051-A25-047)
关键词
镜头
镜头分割
Ⅰ帧
shot
shot segment
Ⅰ frame
