Patent ID: 8325279
Filing Date: 2012-12-04
Classification: G06T,H04N

Abstract:
1. A method for suppressing an undesired temporal pixel-value variation in a time sequence of video frames, the method including the steps of: computing, on the basis of values of a predetermined subset of pixels in each video frame in the time sequence, a set of number pairs of cumulative probabilities and corresponding quantiles, thereby yielding a sequence of sets of number pairs; determining, on the basis of the sequence of sets of number-pairs, guidance number pairs of cumulative probabilities and corresponding quantiles, wherein the guidance number pairs include a dark guidance pair and a bright guidance pair, at least one of the dark guidance pair or the bright guidance pair including two or more quantiles that include resolved and unresolved image features; and replacing actual pixel values in the most recent frame in the time sequence by corrected pixel values in accordance with the two or more quantiles, wherein the two or more quantiles are determined in such a manner that, responsive to one or more image features being resolved in a first other frame of the time sequence and unresolved in a second other frame of the time sequence, said one or more image features are unresolved in the first other frame and unresolved in the second other frame after the step of replacing the actual pixel values.