What's the camera params
I didn't understand the question properly. If you are looking for where to set camera parameters when rendering a mesh, please refer to the code below. However, this code rendered by rotating the mesh without changing the camera parameters.
https://github.com/SangHunHan92/2K2K/blob/8f5d78938d2976f2bec4ed15942f586fbaea7875/render/render_utils.py#L170
Thank you for your responses, I mean How to Get Camera Intrinsics and Extrinsics, and how to Project SMPL-X Vertices to Image Space
If you use trimesh like my code, you can change extrinsic through angles, center, and distance in 170 lines, and change intrinsic through resolution and fov.
ICON and ECON also provide renderers through opengl, so it would be good to refer to them.