search

modelscope / richdreamer

Live Demo：https://modelscope.cn/studios/Damo_XR_Lab/3D_AIGC
https://aigc3d.github.io/richdreamer/
Apache License 2.0
362 stars 13 forks source link

Meaning of 00000_ng.exr in the Gobjaverse dataset? #25

Closed Lizb6626 closed 2 months ago

Lizb6626 commented 3 months ago

Thank you for your outstanding work on the Gobjaverse dataset.

While exploring the dataset, I came across a file named 00000_ng.exr within the downloaded folder which is not mentioned in the readme. Could you please explain the purpose of the 00000_ng.exr file?

Also, I am encountering a minor issue when reading the .exr files. I use cv2.imread(PATH_TO_EXR_FILE, cv2.IMREAD_ANYCOLOR | cv2.IMREAD_ANYDEPTH) and obtain three channels. However, when opened in GIMP, they seem to have an additional alpha channel.

lingtengqiu commented 3 months ago
  1. ng.exr is the ground truth normal map. on the other hand, nd.exr is the normal map adding bump to enhance the detail of geometry surface.
  2. What is the version of opencv?
Lizb6626 commented 3 months ago

The version of opencv is 4.9.0

>>> import os
>>> os.environ["OPENCV_IO_ENABLE_OPENEXR"]="1"
>>> import cv2
>>> img_nd = cv2.imread('00014_nd.exr', cv2.IMREAD_ANYCOLOR | cv2.IMREAD_ANYDEPTH)
>>> img_nd.shape
(512, 512, 3)
>>> img_hdr = cv2.imread('00014_hdr.exr', cv2.IMREAD_ANYCOLOR | cv2.IMREAD_ANYDEPTH)
>>> img_hdr.shape
(512, 512, 3)
>>> print(cv2.__version__)
4.9.0