About HGPIFu

[Followmeczx]

When estimating the human body geometry, the query operation is performed in HGPIFuNet.

The first step is to project the sampled point set onto the image plane. But I found that the transforms parameter is None.


So in xyz = self.projection(points, calibs, transforms), only the points are rotated and translated.
Are all points in the world coordinate system? The projection operation only converts points from the world coordinate system to the camera coordinate system after rotation and translation, and does not project further to the image plane. Please give me some help.

[River-Zhang]

Actually, all points are projected into [-1, 1] space cubes to perform operations. It is not strictly camera coordinate but normalized device coordinates (NDC).

[Followmeczx]

Where is the code projected into [-1, 1] space cubes？