Video Key Frame Extraction for Semantic Retrieval

With the emergence of a large number of video information, content-based video retrieval becomes a hot research topic. A shot is the basic unit of video analysis, lacking semantic information. How to extract key frames from a shot is the key issues of supporting for semantic video retrieval, which makes the obtained key frames represent the main content of a shot completely and accurately. This paper presents the key frame extraction process from top to down, being divided into three parts, i.e., shot segmentation, shot segmentation and key frame extraction. Each part will use the difference between frames. The most important work is feature extraction which is used during the whole process, so as to provide technical support for semantic-based video retrieval.

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