Decoding method and apparatus, coding method and apparatus, device, medium, and program product

A computer device, comprising:

• a processor adapted to execute a computer program;
• and
• a computer-readable storage medium, the computer-readable storage medium having a computer program stored therein, and the computer program, when executed by the processor, causing the computer device to implement a coding method including:
• coding a video frame, to obtain an original bitstream of the video frame;
• performing predictive coding on each pixel in the video frame to obtain residual information of the pixel, and the residual information of the pixel being configured for representing a difference between original pixel information and prediction information of the pixel;
• determining, from the video frame, a target pixel whose residual information satisfies a residual condition;
• identifying a specified region in the video frame according to a position of the target pixel in the video frame, to obtain a detail picture of the video frame;
• coding the detail picture, to obtain a detail bitstream of the video frame;
• and
• transmitting the original bitstream and the detail bitstream of the video frame to a decoder side for joint picture decoding.

A non-transitory computer-readable storage medium having a computer program stored therein, and the computer program, when executed by a processor of a computer device, causing the computer device to perform a coding method including:

• coding a video frame, to obtain an original bitstream of the video frame;
• performing predictive coding on each pixel in the video frame to obtain residual information of the pixel, and the residual information of the pixel being configured for representing a difference between original pixel information and prediction information of the pixel;
• determining, from the video frame, a target pixel whose residual information satisfies a residual condition;
• identifying a specified region in the video frame according to a position of the target pixel in the video frame, to obtain a detail picture of the video frame;
• coding the detail picture, to obtain a detail bitstream of the video frame;
• and
• transmitting the original bitstream and the detail bitstream of the video frame to a decoder side for joint picture decoding.