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Movie and video scale-time equalization application to flicker reduction

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1 Author(s)
Delon, J. ; Centre de Math. et de Leurs Applications, Ecole Normale Superieure de Cachan, France

Image flicker is a general film effect, which can be observed in videos as well as in old films, and consists of fast variations of the frame contrast and brightness. Reducing flicker of a sequence improves its visual quality and can be an essential first treatment before ulterior manipulations. This paper presents an axiomatic analysis of the problem, which leads to a global and fast method of "de-flicker," based on the scale-space theory. The stability of this process, called scale-time equalization, is ensured by the scale-time framework. Results on different sequences are given and show great visual improvement.

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Image Processing, IEEE Transactions on  (Volume:15 ,  Issue: 1 )