Patent ID: 7512182

Claim:
A method for filtering noise in a video encoding process comprising: determining a discrimination value of a filter based on a magnitude difference between a current frame and a prior frame of a sequence of frames; and modifying the current frame with a noise reduction processor using the determined discrimination value; wherein the current frame is modified as follows: g ( i,j,k ) = f ( i,j,k )+Î² in which: f ( i,j,k ) is the current frame input to the filter; g ( i,j,k ) is the current frame output from the filter; and Î² is the discrimination value of the filter; and wherein the discrimination value is determined as follows: Î² = { Î´ - ( 1 â¢ / â¢ Î” ) â¢ Î´ 2 , Î´ < Î” 0 , Î´ â‰¥ Î” in which Î´ is the magnitude difference between the current frame and the prior frame along motion traiectories; and Î” is a predetermined filter strength.