does SfMPerspectiveCameras workable？

[achao2013]

❓ Questions on how to use PyTorch3D

I want to use SfMPerspectiveCameras to render a hunman face obj(with texturemap, x,y,z ~[-1,1])，but it seams that there are something wrong，the rendered result is strange:

SfMPerspectiveCameras(device=device, focal_length=np.array([[256,256]]), principal_point=np.array([[256,256]]), R=np.eye(3).reshape(1,3,3),T=np.array([[0,0,0]
]))
does i make a mistake or this function is not ready?

[achao2013]

@nikhilaravi can you tell me if the SfMPerspectiveCameras class is ready

[gkioxari]

Hi @achao2013
We have added a note on cameras

https://github.com/facebookresearch/pytorch3d/blob/master/docs/notes/cameras.md

Note that by default PyTorch3D assumes assumes camera parameters defined in NDC space. Since 57a22e7, SfMPerspective and SfMOrthographic accept parameters both in NDC and screen space. Please read the note and the code for more details.