[Bug] How to transfer .pth model to ONNX for RTMO

[fengyurenpingsheng]

Prerequisite

• [X] I have searched Issues and Discussions but cannot get the expected help.
• [X] The bug has not been fixed in the latest version(https://github.com/open-mmlab/mmpose).

Environment

Could you provide detailed instructions （code） on how to convert a .pth model to ONNX for RTMO? Since I need to transfer the ONNX model to an RV model, it may cause errors due to variable input sizes. Therefore, I need to generate a new ONNX model by modifying the configuration file.

Reproduces the problem - code sample

Could you provide the code and configuration file

Reproduces the problem - command or script

Could you provide the code and configuration file

Reproduces the problem - error message

Could you provide the code and configuration file

Additional information

Could you provide the code and configuration file