Abstract: The keyframe extraction algorithm based on cohisgram leads to the problem of missing extraction, while the method based on edge feature leads to the problem of high computational complex. The article proposes a method that takes advantages of the two algorithms, namely, first extracts key frames by using cohisgram, then extracts the finally key frames from the previous results. Experimental results demonstrate that frames extracted can give a good summarization of the video while avoid redundancy.

Key words: keyframe, cohistogram, symmetry, edge feature