METHOD AND DEVICE FOR IMAGE ENCODING/DECODING BASED ON MIXED TYPE NAL UNIT AND METHOD FOR TRANSMITTING BIT STREAM Russian patent published in 2024 - IPC H04N19/70 H04N19/184 H04N19/174 H04N19/82 

FIELD: image encoding.

SUBSTANCE: network abstraction layer (NAL) unit type information of the video coding layer (VCL) of the current frame and first flag information indicating whether or not a subframe included in the current frame is treated as one frame are obtained from the bitstream. The NAL unit type of each of the plurality of slices included in the current frame is determined based on the received NAL unit VCL type information. The plurality of slices are decoded based on the determined NAL unit type and the first flag information. Here, the current frame consists of two or more subframes based on at least some of a plurality of slices having different types of NAL units. Here, the first flag information has a predetermined value indicating that each of the two or more subframes is treated as one frame based on at least some of a plurality of slices having different types of NAL units.

EFFECT: improved efficiency of image encoding.

14 cl, 17 dwg