I have a couple of questions if the authors are following along. While I understand the choice of using a downsampled input with 4 channels I'm wondering why y

I have a couple of questions if the authors are following along. While I understand the choice of using a downsampled input with 4 channels I'm wondering why you went with a downsampled output instead of going to the original resolution directly where the 3 color channels are separate. Also, did you investigate "faking" the training data by taking a single well exposed image, making it darker using conventional methods and using the resulting image as an input to the workflow?