Intra-frame depth map block encoding and decoding methods, and apparatus

A decoding apparatus, comprising:

• a memory storing instructions;
• and
• a processor coupled to the memory, the processor configured to execute the instructions stored in the memory to cause the processor to:
• acquire, from a bitstream, a depth modeling mode (DMM) used for a depth map block, wherein the DMM is applied to recursive quadtree (RQT) coding or simplified depth coding (SDC),
• obtain a block predicted value of a depth map subblock obtained through segmentation in the DMM according to the DMM, wherein the block predicted value is obtained by using a depth map block adjacent to the depth map subblock,
• acquire, from the bitstream, a block offset value of the depth map subblock, and residual information of each pixel in the depth map subblock, and
• obtain a reconstruction value of each pixel in the depth map subblock according to the block predicted value, the block offset value and the residual information of each pixel in the depth map subblock.