Apparatus and method for deriving an enhanced decoded reduced-resolution video signal from a coded high-definition video signal

摘要

An improved image processing system (204, 205B, 205E, 206, 207) involves decoding compressed image data including frequency domain coefficients defining blocks of pixel values representing an image at a first resolution to provide an image at a reduced second resolution for display from a selected sub-set of the frequency domain coefficients. The apparatus includes an enhanced motion-compensation-unit (MCU) (208) operating with blocks of pixel values representing an image at an intermediate third resolution lower than the first resolution but higher than the reduced second resolution.