Patent ID: 6320987
Filing Date: 2001-11-20
Classification: H04N

Abstract:
A method for processing a video signal, comprising the steps of:receiving a nonreconstructed video residue image;selecting a first pixel to be processed;selecting second and third pixels, said second and third pixels being contiguous to said first pixel, and positioned right and left of said first pixel;determining first, second, and third weighting factors for said first, second and third pixels, respectively;computing a first result by multiplying said first weighting factor with the value of said first pixel;computing a second result by multiplying said second weighting factor with the value of said second pixel;computing a third result by multiplying said third weighting factor with the value of said third pixel; andcomputing a new value for said first pixel by adding said first, second and third results together;wherein said second and third weighting factors are equal to the quotient of a quantization factor divided by a value N, where N is directly proportional to the resolution of the image being filtered, and the quantization factor is a value between 2 and 31.