regarding the predicted depth map during inverse warp about sfmlearner-pytorch HOT 2 CLOSED

Hi, see this line :

We multiply everything by depth afterward.

The key here is that we don't need depth until the very end, because perspective never changes with depth : if you only have one eye, you can't differentiate a real house to a smaller but closer minutre version of it. The only way to make the difference is to know the magnitude of your displacement.

So we fix it to 1 only at the end, when we have the 3D point (x, y, 1) we can multiply everythong with depth to get (X, Y, Z) = (xdepth, ydepth, depth)

from sfmlearner-pytorch.

Thanks for the reply.
Now I understand everything!

from sfmlearner-pytorch.