Device-cloud collaboration system, encoding and decoding method, and electronic device

A decoding method, applied to a terminal device, wherein the method comprises:

• receiving a bitstream;
• parsing the bitstream, to obtain a parsing result, wherein the parsing result comprises a residual block corresponding to a current frame;
• obtaining a first intermediate rendering result generated in a rendering processing process on a three-dimensional scene based on a rendering parameter corresponding to the current frame, wherein the rendering parameter comprises a first rendering parameter generated by the terminal device;
• and
• performing reconstruction based on the first intermediate rendering result and the residual block, to obtain a reconstructed image of the current frame, wherein the first intermediate rendering result acts on at least one type of the following processing in the reconstruction process:
• prediction or filtering.

An electronic device, comprising:

• a storage and at least one processor, wherein the storage is coupled to the at least one processor, wherein
• the storage stores program instructions, and when the program instructions are executed by the at least one processor, the electronic device is configured to:
• obtaining a first intermediate rendering result based on an intermediate rendering result generated in a rendering processing process on a three-dimensional scene based on a rendering parameter, wherein the rendering parameter comprises a first rendering parameter obtained from a terminal device;
• and
• encoding the rendered image obtained by the rendering processing process based on the first intermediate rendering result, to obtain encoded data of a residual block, and encode the encoded data of the residual block into a bitstream, wherein
• the residual block is obtained by performing a residual operation on a to-be-encoded block in the rendered image and a corresponding predicted block, the predicted block is obtained by predicting the to-be-encoded block, the first intermediate rendering result acts on at least one type of the following processing in the encoding process:
• partitioning, prediction, or filtering, the bitstream does not comprise encoded data of the first intermediate rendering result or the bitstream further comprises encoded data of a second intermediate rendering result, and the second intermediate rendering result is a part of the first intermediate rendering result.

An electronic device, comprising:

• a storage and at least one processor, wherein the storage is coupled to the at least one processor, wherein
• the storage stores program instructions, and when the program instructions are executed by the at least one processor, the electronic device is configured to:
• receiving a bitstream;
• parsing the bitstream, to obtain a parsing result, wherein the parsing result comprises a residual block corresponding to a current frame;
• obtaining a first intermediate rendering result generated in a rendering processing process on a three-dimensional scene based on a rendering parameter corresponding to the current frame, wherein the rendering parameter comprises a first rendering parameter generated by the terminal device;
• and
• performing reconstruction based on the first intermediate rendering result and the residual block, to obtain a reconstructed image of the current frame, wherein the first intermediate rendering result acts on at least one type of the following processing in the reconstruction process:
• prediction or filtering.