SCALING OF TRANSFORM COEFFICIENTS FOR NON-DYADIC TRANSFORM BLOCKS

摘要

A decoding method is disclosed that comprises: - decoding a block of transform coefficients from a bitstream; - de-quantizing the decoded block of transform coefficients by a quantization step size; - scaling said dequantized block by a scaling factor; and - transforming said scaled block into an image block, wherein the scaling factor's value depends on whether at least one of the width and the height of the block is a power of 2.