VIDEO INTERPOLATION CODING

摘要

A method of enhancing picture quality of a video signal is described. The method comprising steps of receiving base images for pictrues having a first definition from a base layer decoder; coding the differences between the base images of pictures and pictures having a second definition using vector quantization; creating a database of codebooks based upon the differences; and generating enhanced images based upon the base images and enhancement stream data. A circuit for enhancing picture quality of a video signal is also described. The circuit comprises a base layer decoder (1110) generating a based image of a standard definition picture; an interpolator (1130) coupled to the based layer decoder and generating an interpolated block; a classifier (1120) coupled to the base layer decoder and generating a class number; and a summing circuit coupled to the interpolator and the classifier. The summing circuit (1140, 1170) preferably adds the interpolated block and a difference block.