Patent Document ID: 20040190621
Application ID: 10480356
Patent Status: 0

Claim One:
1. A method of processing a digital video signal (VS), said video signal representing a sequence of images, characterized in that it comprises the steps of: detecting motion pixels in a current image (I(t)), computing a discrete frequency transform on blocks of said current image (I(t)) for providing transformed blocks, median filtering a current transformed block (Bc), said filtering comprising the sub-steps of: spatial median filtering a first set of coefficients (Mcs, Mu, Md) belonging to the current transformed block (Bc) and to neighboring blocks, and temporal median filtering a second set of coefficients (Mct, Mp, Mn) belonging to the current transformed block (Bc) and to corresponding blocks (Bp, Bn) of previous and subsequent images, computing an inverse discrete frequency transform on the filtered transformed block for providing an inverse transform block, and replacing pixels in said inverse transformed block by said detected motion pixels.