I need to convert series of images drawn as white on black background letters to images where white and black are inverted (as negative). How can I achieve this using PIL?
Try the following from the docs: http://effbot.org/imagingbook/imageops.htm
from PIL import Image import PIL.ImageOps image = Image.open('your_image.png') inverted_image = PIL.ImageOps.invert(image) inverted_image.save('new_name.png')
Note: "The ImageOps module contains a number of 'ready-made' image processing operations. This module is somewhat experimental, and most operators only work on L and RGB images."