def get_camera_param(self, imgname) -> dict:
        """Get camera parameters of a frame by its image name."""
        assert hasattr(self, 'camera_param')
        subj, _, camera = self._parse_h36m_imgname(imgname)
        return self.camera_param[(subj, camera)]
Get camera parameters of a frame by its image name.
mmpose/mmpose/datasets/datasets/body3d/h36m_dataset.py