Coding method, apparatus, and device

A coding device, comprising a processor and a memory, wherein the memory stores a program or instructions capable of running on the processor, wherein the program or instructions, when executed by the processor, cause the coding device to perform:

• decimating a target three-dimensional mesh to obtain a decimated mesh;
• quantizing geometric information of the decimated mesh to obtain first information, wherein the first information comprises at least one of the following:
• the first precision geometric information, the second precision geometric information, or information of supplementary points;
• and
• coding the first information and connectivity information of a reconstructed mesh;
• wherein
• the reconstructed mesh is determined based on the first information, the first precision geometric information is geometric information obtained after quantization of the target three-dimensional mesh, the second precision geometric information is geometric information lost during quantization of the target three-dimensional mesh, and the information of the supplementary point is information of a point generated during quantization and requiring additional processing.

A non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a program or instructions, wherein the program or instructions, when executed by a processor, cause the processor to perform:

• decimating a target three-dimensional mesh to obtain a decimated mesh;
• quantizing geometric information of the decimated mesh to obtain first information, wherein the first information comprises at least one of the following:
• the first precision geometric information, the second precision geometric information, or information of supplementary points;
• and
• coding the first information and connectivity information of a reconstructed mesh;
• wherein
• the reconstructed mesh is determined based on the first information, the first precision geometric information is geometric information obtained after quantization of the target three-dimensional mesh, the second precision geometric information is geometric information lost during quantization of the target three-dimensional mesh, and the information of the supplementary point is information of a point generated during quantization and requiring additional processing.