Required image format for CLAHE

[kdarras]

First, thank you for implementing CLAHE on python.
I tried to use your python script on a 5MP JPEG taken from an IR camera but I cannot get it to work, and I am not sure what the required format is (tried PNG too). I indicated the path to he image in the "im_path" and I wrote the name of the file under "gray_image", but I keep getting the error "AttributeError: 'tuple' object has no attribute 'shape'"