Method for implementing coding and decoding of yuv444 image on basis of h.265

A method for implementing coding and decoding of a YUV444 image on basis of H.265, comprising the following steps:

• acquiring a 1080P YUV444 image, and extracting a Y component, a U component and a V component from the 1080P YUV444 image;
• dividing a target image into 4 areas, wherein the 4 areas are denoted as a first area, a second area, a third area and a fourth area;
• and
• successively using the Y component, the U component and the V component of the 1080P YUV444 image as a Y component of the first area, a Y component of the second area and a Y component of the third area, setting U components and V components of the first area, the second area and the third area to 0, and setting a Y component, a U component and a V component of the fourth area to 0, so as to make the target image composed of the first area, the second area, the third area and the fourth area form a 4K YUV444 image.