question about the difference between matlab code and python code of isp process

[XuJZ]

Thanks for provide the python code of isp process, I just find that you add Poisson-Gaussian noise before mosaic_bayer in the matlab code, but you add the noise after mosaicing and inver white balancing in the python code. Is this difference reasonable?

[Shi Guo]

Mosaic can treat as linear pixel sampling. So adding noise before and after this step is the same for the final training data. Adding noise after mosaic_bayer is more explainable.

[XuJZ]

Thank you very much.

[XuJZ]

Hello! I am sorry to interrupt you again cause I find that there is a small difference between the CRF_Map.m file and the CRF_Map function in python. In the CRF_Map.m file, comp2=temp-B(index-1), but it becomes to temp-I_temp(index-1) in Python.Can you tell me which one is right?
Thank you!

[Shi Guo]

I check the code and find the python code may be right. I update the Matlab code. Thank you for pointing it out.

[XuJZ]

Thanks for your response!