Sony Group Corporation
IMAGE DATA ENCODING AND DECODING

Abstract:

An image data encoding apparatus includes an entropy encoder configured to selectively encode data items representing image data by an encoding system selected from a context adaptive binary arithmetic coding (CABAC) encoding system and a bypass encoding system. The data items include (i) a first data item indicating whether a multi-direction linear model (MDLM) chroma mode applies to a current image region; and (ii) a second data item indicating a processing direction for operation of the MDLM chroma mode. The entropy encoder encodes instances of the first data item and instances of the second data item independently of the encoding of instances of the first data item.