文档介绍：Study on Method of
Video Key Frame Extraction
A Thesis Submitted to Chongqing University
in Partial Fulfillment of the Requirement for the
Degree of Master of Engineering
by
Cao Jingao
Supervisor: Associate Prof. Yin Yong
Major: Signal and Information Processing
College munication Engineering of
Chongqing University, Chongqing, China
April 2008
重庆大学硕士学位论文中文摘要
摘要
随着信息网络时代的到来,海量的视觉信息在全球被采集、传输和应用。然
而,视觉信息膨胀带来的问题却非常严重,很多领域由于对大量的视觉信息无法
有效的处理而使采集的视觉信息闲置,造成了很大的资源浪费。这些问题的出现,
推进了多媒体技术的发展,尤其是视频处理技术的发展。在这些技术当中,视频
摘要和视频检索又是近几年的热点。在视频摘要和视频检索领域,研究关键帧提
取的问题是非常重要的一环。本文主要针对视频关键帧的提取方法进行了研究和
探讨。
本文首先介绍了视频关键帧提取的国内外现状与应用,并对数字视频的特点、
结构进行了详细的研究、归纳与总结。由于关键帧提取是在视频分割为镜头后进
行的,因此还对现有的镜头分割技术进行了简要的研究。关键帧提取方法的研究
是本文的核心组成部分。本文在参阅大量文献的基础上,对当前的关键帧提取的
方法及其相关技术进行了较为详细的分析和总结。最后,为了克服现有关键帧提
取算法的不足,本文提出了一种采用基于无监督聚类的自适应关键帧提取算法. 采
用的算法能够提取出具有重要而突出内容的关键帧,而且关键帧的数目也是自适
应的。实验证明了该算法的鲁棒性和适应性。
关键词: 镜头,关键帧,特征提取,相似度,无监督聚类
I
重庆大学硕士学位论文英文摘要
ABSTRACT
With the arrival of information work times, a great deal of visual
information is collected, transferred and applied all over the world. However, the
problem that the information increases rapidly has been very serious. In many fields a
lot of visual resource collected is set aside since it is not processed, which brings about
large waste of resource. The appearance of this problem boosts the development of
multimedia technology, especially, the development of video analysis technology.
Among these techniques, video summary and video information retrieval have been
the hotspots in recent years. In the field of video summary and video information
retrieval, the problem of key frame extraction is of great importance. The methods of
key frame extraction will be discussed in this thesis.
In this dissertation, firstly, the development and applications of the key frame
extraction technology are introduced and the characteristics and structure of