適応色空間変換の符号化

Abstract

A system and method for efficiently transforming and encoding image data is provided. In the encoding system (100), an analyzer analyzes a current image region of the input video to select a transform, a selectable residual transformer is controlled by the analyzer to perform the selectable transform on a residual image generated from the current image region and the predicted current image region to generate a transformed residual image, and an encoder encodes the transformed residual image to generate output data. The analyzer also controls the encoder to encode information identifying the selectable transform and to indicate that the selectable transform for the current image region is different from the transform of a previous image region of the input video. The decoding system includes components suitable for decoding the output data from the encoding system.

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