Patent ID: 8090031

Claim:
A method for video processing for motion compensation comprising the steps of: interpolating a source video image by a first filtering step to generate an intermediate video image; and processing the intermediate video image by a second filtering step to construct a reference image; wherein said second filtering step is performed by a five-tab adaptive filter; wherein asymmetrical filter coefficients of said adaptive filter are processed by filter coefficient coding; wherein said filter coefficient coding additionally comprises the steps of: computing a residual filter for a subpixel location to determine one or more residual filter coefficients with values of a corresponding upper subpixel location reconstructed filter if available, a corresponding left subpixel location reconstructed filter if available, and a standard filter coefficient; truncating said one or more residual filter coefficients to coefficient values with fixed number of bits; entropy-coding said residual filter; coding a filter scale; and entropy-coding a prediction mode for said subpixel location.