Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

PIL.Image.Image.crop

Notice that the bounding box is inclusive/EXCLUSIVE like the range function. PIL.Image.Image.crop does not accept a bounding box of zero size!

PIL.Image.Image.resize

1. img.resize(img.size) returns a new copy and the new copy is not necessarily the same as the original one.

2. Image.resize might return different results in different versions of Pillow. To ensure that you get the same result, make sure to have the same version of Pillow, and best to use a Docker environment to ensure identical environment.

Mask (Image) in Pillow

1. A Mask (image) in Pillow must be a binary image.

References

https://pillow.readthedocs.io/en/stable/reference/Image.html

https://python-pillow.org/

https://stackoverflow.com/questions/9983263/how-to-crop-an-image-using-pil

https://pillow.readthedocs.io/en/stable/