The CubePlusPlus\challenge\make_preview.py make the photo a little white

[RebornForPower]

Thanks for sharing your work~
I am the freshman and want to learn the color constancy. But now I don't know how to generate the original photo by the gt.csv and *.png. I have tried to restore it but get the wrong result. My result is a little white than the original photo. （The photo is from the simplecube++ and the code is reference from the CubePlusPlus\challenge\make_preview.py）

This is my result：

but the original photo is：

Thanks~

[savfod]

Hi!

We rendered the JPG images in the Cube++ dataset with the open-source program, called dcraw. The SimpleCube++ images are just the downscaled and cropped versions of the Cube++ ones. See the detailed dataset description and dataset generating code.

The function in challenge/make_preview.py was provided for IEC#2 (2020) challenge as a pure python script, which can be easily reproduced. Therefore, the results from dcraw processing may appear better. The baseline pipeline from the NIR#3 (2022) challenge is also available.

Beware, the JPG images are included to the dataset for visualization purposes only. As there is no physically accurate way to render RAW image as a JPG one, the result heavily relies on the processing algorithm used.