VIDEO ENCODING AND DECODING APPARATUS AND METHOD

摘要

The present invention relates to a video encoding apparatus including: an estimation unit for estimating pixel values of each of the pixels in the present block of an image; a subtraction unit for calculating the difference between the original pixel values of each of the pixels of the present block and the estimated pixel values of each of the pixels of the present block, and for generating residual signals; a converting unit for converting the residual signals into frequency coefficients; a quantization unit for quantizing the converted frequency coefficients; and an encoding unit for encoding the quantized frequency coefficients by using one of a plurality of variable length encoding tables different from each other. The invention also relates to a video decoding apparatus corresponding to the method.