In Python3 the StringIO and cStringIO modules are gone. In Python3 you should use: from PIL import Image import requests from io import BytesIO response = requests.get(url) img = Image.open(BytesIO(response.content))
Save your files as uncompressed 24-bit BMPs. These store pixel data in a very regular way. Check out the “Image Data” portion of this diagram from Wikipedia. Note that most of the complexity in the diagram is just from the headers: For example, let’s say you are storing this image (here shown zoomed in): This … Read more
Splitting image to tiles of MxN pixels (assuming im is numpy.ndarray): tiles = [im[x:x+M,y:y+N] for x in range(0,im.shape[0],M) for y in range(0,im.shape[1],N)] In the case you want to split the image to four pieces: M = im.shape[0]//2 N = im.shape[1]//2 tiles[0] holds the upper left tile
The error regarding the file extension has been handled, you either use BMP (without the dot) or pass the output name with the extension already. Now to handle the error you need to properly modify your data in the frequency domain to be saved as an integer image, PIL is telling you that it doesn’t … Read more
from PIL import Image im = Image.open(‘whatever.png’) width, height = im.size According to the documentation.
You need to use Numpy, or OpenCV, for fast image processing in Python. I made a 9-colour version of Paddington: from PIL import Image import numpy as np # Open Paddington and make sure he is RGB – not palette im = Image.open(‘paddington.png’).convert(‘RGB’) # Make into Numpy array na = np.array(im) # Arrange all pixels … Read more
The way to do this without having to write back to the filesystem, and then bring the file back into memory via an open call, is to make use of StringIO and Django InMemoryUploadedFile. Here is a quick sample on how you might do this. This assumes that you already have a thumbnailed image named … Read more
I had the same error. Here was my workflow. I first installed PIL (not Pillow) using pip install –no-index -f https://dist.plone.org/thirdparty/ -U PIL Then I found Pillow and installed it using pip install Pillow What fixed my issues was uninstalling both and reinstalling Pillow pip uninstall PIL pip uninstall Pillow pip install Pillow
Sadly the accepted answer doesn’t work anymore, because Image.tostring() has been removed. It has been replaced by Image.tobytes(). See Pillow – Image Module. Function to convert a PIL Image to a pygame.Surface object: def pilImageToSurface(pilImage): return pygame.image.fromstring( pilImage.tobytes(), pilImage.size, pilImage.mode).convert() It is recommended to convert() the Surface to have the same pixel format as the … Read more
If you use homebrew, you can install the PIL with just brew install pil. You may then need to add the install directory ($(brew –prefix)/lib/python2.7/site-packages) to your PYTHONPATH, or add the location of PIL directory itself in a file called PIL.pth file in any of your site-packages directories, with the contents: /usr/local/lib/python2.7/site-packages/PIL (assuming brew –prefix … Read more