I am using a modified script from [github][1] it works well when it comes to cropping jpg files but I need to crop tiff files and keep the quality as best as possible, how do I do that?
Now i get an error like this:

    newOCR9.tiff image has wrong mode
Here is my [Code][2]


  [1]: https://github.com/danvk/oldnyc/blob/master/ocr/tess/crop_morphology.py
  [2]: https://pastebin.com/raw/Swnma4Ar