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| 一种基于压缩域的镜头检测算法 | |
| 引用本文： | 李向伟,李战明,张明新,王娟,韦哲.一种基于压缩域的镜头检测算法[J].兰州理工大学学报,2008,34(6). |
| 作者姓名： | 李向伟 李战明 张明新 王娟 韦哲 |
| 作者单位： | 1. 兰州理工大学,电气工程与信息工程学院,甘肃,兰州,730050;兰州工业高等专科学校,软件工程系,甘肃,兰州,730050 2. 兰州理工大学,电气工程与信息工程学院,甘肃,兰州,730050 3. 西北师范大学,数学与信息科学学院,甘肃,兰州,730070 4. 兰州工业高等专科学校,软件工程系,甘肃,兰州,730050 |
| 基金项目： | 甘肃省自然科学基金 |
| 摘 要： | 针对传统的非压缩域镜头检测算法数据量大、运算量大和效率低的缺点,提出一种基于压缩域的镜头检测算法.该算法首先根据MPEG压缩标准,从视频流中提取DCT系数,然后经预处理得到每一帧的DC系数,最后依DC系数建立镜头检测信息系统模型,依分割模型产生视频镜头.实验结果表明,此算法相对传统非压缩域算法运算量和数据量大大减少,提高了算法效率. |
| 关 键 词： | 镜头 镜头检测 I帧 |
A shot inspection algorithm based on compressed domain |
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| LI Xiang-wei,LI Zhan-ming,ZHANG Ming-xin,WANG Juan,WEI Zhe.A shot inspection algorithm based on compressed domain[J].Journal of Lanzhou University of Technology,2008,34(6). | |
| Authors: | LI Xiang-wei LI Zhan-ming ZHANG Ming-xin WANG Juan WEI Zhe |
| Institution: | LI Xiang-wei1,2,LI Zhan-ming1,ZHANG Ming-xin3,WANG Juan2,WEI Zhe1(1.College of Electrical , Information Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China,2.Department of Software Engineering,Lanzhou Polytechnic College,3.College of Mathematics , Information Science,Northwest Normal University,Lanzhou 730070,China) |
| Abstract: | Aimed at the shortcoming in conventional shot inspection algorithm oriented to non-compressed domain such as enormous quantity of data and computation and low inspection efficiency,a new compressed-domain-oriented shot inspection algorithm was presented.In this method,the DCT coefficients were extracted first from the video stream according to MPEG standard and then the DC coefficients were obtained for each frame after preprocessing of the former.Finally,a model of the shot inspection information system wa... |
| Keywords: | shot shot detection I frame |
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