WEIGHT BASED IMAGE PROCESSING

摘要

In an image-encoding scheme, an input image is decomposed into several image blocks comprising multiple image elements. The image blocks are encoded into encoded block representations. In this encoding, color weights are assigned to the image elements in the block based on their relative positions in the block. At least two color codeword are determined, at least partly based on the color weights. These codewords are representations of at least two color values. The original colors of the image elements are represented by color representations derivable from combinations of the at least two color values weighted by the assigned color weights.

主权项

1. A method of processing a compressed representation of an image block comprising multiple image elements, said compressed representation comprising at least two color codewords, and said method comprising the steps of:
determining at least two color values based on said at least two color codewords;for at least one image element in said image block:
providing color weights assigned to said at least or; image element, based only on a position of said image element within said image block, and calculating a color representation based on said provided color weights and said determined at least two color values.