FIELD: computer equipment.
SUBSTANCE: image encoding device configured to generate a bitstream comprises: an encoding module configured to encode a block to be processed using either a quantization process or not including a quantisation process, wherein said encoding unit is configured to perform either a second encoding process using the intra-prediction mode, which uses a pixel not included in the processed block, or a second encoding process using a pixel-based DPCM process included in a unit to be processed.
EFFECT: increased efficiency of image encoding/decoding.
21 cl, 13 dwg
