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cynthia/color_pages.py

Created March 17, 2025 16:03
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color_pages.py
#!/usr/bin/python
# pip install pillow imagehash pdf2image
from PIL import Image, ImageOps
from pdf2image import convert_from_path
from imagehash import colorhash
filename = '/Users/cynthia/Dropbox/Paperwork/Titech/Graduation/thesis.pdf'
pages = convert_from_path(filename, 50)
out_tmp = 'temp'
threshold = 0 # increase if you have small color elements you are okay being gray
for i, page in enumerate(pages):
delta = colorhash(ImageOps.grayscale(page)) - colorhash(page)
if delta > threshold:
out_filename = f'color_pages/{i+1}.jpg'
page.save(out_filename)
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