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Correction of intensity flicker in old film sequences
van Roosmalen, P.M.B.; Lagendijk, R.L.; Biemond, J.;
Circuits and Systems for Video Technology, IEEE Transactions on
Volume 9,
Issue 7,
Oct. 1999
Page(s):1013
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1019
Abstract:
Temporal intensity flicker is a common artifact in old film sequences. Removing disturbing temporal fluctuations in image intensities is desirable because it increases both the subjective quality and, where image sequences are stored in a compressed format, the coding efficiency. We describe a robust technique that corrects intensity flicker automatically by equalizing local frame means and variances in the temporal sense. The low complexity of our method makes it suitable for hardware implementation. We tested the proposed method on sequences with artificially added intensity flicker and on original film material. The results show a great improvement
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