How can I generate the depth map?

[sainatarajan]

Hi, many thanks for this open repo of the PIFuHD.

I see that I'm able to get the normal map from this model. As an extension, I would like to retrieve the depthmap as output as well. Could you give a few pointers on how can I achieve it? If possible, a small script that converts the normal->depth map would be perfect.

Thanks.