Flicker stabilization in image sequences
Flicker is an artefact appearing in image sequences, which is characterized by intensity changes from a frame to another. Some of these contrast changes may be localized on a part of the image.
This page presents some experiments of local flicker stabilization. For each example, the flickering sequence is shown on the left and the stabilized sequence on the right. The local stabilization used here corresponds to the WM operator described in
J. Delon and A. Desolneux, Flicker stabilization in image sequences, preprint HAL, 2009.
Sequences from old movies
Four extracts from old movies, suffering from strong flicker effects. The first two sequences are extracts from Our Shrinking world (1946), available on the website www.archive.org. The results on these two sequences can be compared with the results of state of the art algorithms, kindly provided by Guillaume Forbin on his webpage.
A biological sequence suffering from important flicker-like effects.
In these experiments, a synthetic multiplicative flicker has been added to the sequences. This flicker is either randomly located, or motion-coherent. In this last case, it consists in a multiplicative dark transparent strip moving from the top left to the bottom right of the frames.