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Information theory-based shot cut/fade detection and video summarization

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3 Author(s)
Z. Cernekova ; Dept. of Informatics, Aristotle Univ. of Thessaloniki, Greece ; I. Pitas ; C. Nikou

New methods for detecting shot boundaries in video sequences and for extracting key frames using metrics based on information theory are proposed. The method for shot boundary detection relies on the mutual information (MI) and the joint entropy (JE) between the frames. It can detect cuts, fade-ins and fade-outs. The detection technique was tested on the TRECVID2003 video test set having different types of shots and containing significant object and camera motion inside the shots. It is demonstrated that the method detects both fades and abrupt cuts with high accuracy. The information theory measure provides us with better results because it exploits the inter-frame information in a more compact way than frame subtraction. It was also successfully compared to other methods published in literature. The method for key frame extraction uses MI as well. We show that it captures satisfactorily the visual content of the shot.

Published in:

IEEE Transactions on Circuits and Systems for Video Technology  (Volume:16 ,  Issue: 1 )