IMAGE ENCODER AND IMAGE DECODER, IMAGE ENCODING METHOD AND IMAGE DECODING METHOD Russian patent published in 2014 - IPC H04N19/593 H04N19/186 H04N11/04 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. An image encoder which generates a bit stream based on input of a colour image formed from a plurality of colour components through compression-encoding of the colour image in units of regions, obtained by dividing the colour image into predetermined regions, wherein the image encoder includes: an encoding unit which encodes identification information for sharing the intra-prediction mode, which indicates if regions serving as encoding units are prediction-encoded based on the intra-prediction mode which is shared for each colour components, or not, and which encodes the intra-prediction mode shared for each colour component if decoding is carried out using the intra-prediction mode shared for each colour component.

EFFECT: high optimality of encoding the signal of a moving image.

4 cl, 86 dwg