GitLab

Summary: This diff implements the inverse of D28992470 (https://github.com/facebookresearch/pytorch3d/commit/8006842f2a5ab1546a90797a6394f875adce045c): a function to extract OpenCV convention camera parameters from a PyTorch3D `PerspectiveCameras` object. This is the first part of the new PyTorch3d<>OpenCV<>Pulsar conversion functions.

Reviewed By: patricklabatut

Differential Revision: D29278411

fbshipit-source-id: 68d4555b508dbe8685d8239443f839d194cc2484