CODING AND DECODING METHOD AND DEVICE

摘要

Encoding and decoding methods and apparatuses are disclosed, which can fully utilize a spatial correlation in video information, thereby improving compression efficiency during encoding and decoding. The method includes: determining, according to a total coding cost of a target image, a first processing order of multiple code blocks groups included in the target image; encoding a code blocks group of the multiple code blocks groups according to the first processing order, to generate a bitstream; and writing the first processing order to the bitstream. A first processing order of multiple code blocks groups included in a target image is determined according to a total coding cost of the target image, and the multiple code blocks groups are encoded and decoded according to the first processing order, so that a spatial correlation in video information can be fully utilized, thereby improving compression efficiency during encoding and decoding.