Does not respect EXIF orientation

I have a huge database of photos and am trying to compare ones of the same name to discard duplicates. Some duplicates have a different orientation flag in the EXIF data, while others have already been rotated (I probably used some jpeg optimization software on them in the past which transformed for the orientation). When comparing both images that appear the same way in image viewers, a huge difference is reported because one stores the pixels in a horizontal sequence and the other in a vertical sequence.

odiff should apply the orientation flag when loading images and transform the data accordingly. I could preprocess all images that have non standard orientation, but that requires a recompression and potential loss of quality.

Seems like a trivial thing to implement and would avoid mismatches for the unaware.