1. A method of enhancing picture quality of a video signal, said method comprising the steps of: receiving base layer of standard definition pictures from a base layer decoder; generating interpolated images via an interpolator in accordance with said standard definition pictures and predefined parameters; defining image areas of said standard definition pictures; classifying said defined image areas into image types by assigning a class number; using said class number to obtain from memory at least one enhancement step, said enhancement step corresponding to a specific one of said image areas; and generating enhanced pictures in response to at least one class number and an least one index, and based upon said interpolated images and said enhancement step as applied to said corresponding image area.