Infinite size

[ekouidinovv]

I want to resize image and I don't actually care about one of the dimensions(I want my image to be upscaled if it is less than target), I tried to set it as sys.maxsize but I get:

Traceback (most recent call last):
  File "/mnt/c/Users/vbyhg/Dev/Work/webim/server/src/apps/image_robot/.venv/lib/python3.9/site-packages/aiohttp/web_protocol.py", line 433, in _handle_request
    resp = await request_handler(request)
  File "/mnt/c/Users/vbyhg/Dev/Work/webim/server/src/apps/image_robot/.venv/lib/python3.9/site-packages/aiohttp/web_app.py", line 504, in _handle
    resp = await handler(request)
  File "/mnt/c/Users/vbyhg/Dev/Work/webim/server/src/apps/image_robot/image_robot/handlers.py", line 184, in get_image
    orig_image = orig_image.resize(resize, Image.LANCZOS)
  File "/mnt/c/Users/vbyhg/Dev/Work/webim/server/src/apps/image_robot/.venv/lib/python3.9/site-packages/PIL/Image.py", line 2174, in resize
    return self._new(self.im.resize(size, resample, box))
OverflowError: signed integer is greater than maximum

code example:

resize = (resolution_w, sys.maxsize) if orig_w < orig_h else (sys.maxsize, resolution_h)
orig_image = orig_image.resize(resize, Image.LANCZOS)

Is there any way to set one of the dimensions to be infinitely large?

[Yay295]

You should use one of these ImageOps methods: https://pillow.readthedocs.io/en/stable/reference/ImageOps.html#resize-relative-to-a-given-size

[radarhere]

Good suggestion.

So this will scale up your image to cover both resolution_w or resolution_h - you don't even have to figure out which dimension you need to use!

from PIL import Image, ImageOps
resolution_w, resolution_h = (300, 300)
with Image.open("Tests/images/hopper.png") as im:
    ImageOps.cover(im, (resolution_w, resolution_h)).save("imageops_cover.png")

@ekouidinovv is that helpful?

[ekouidinovv]

thanks @radarhere @Yay295
this really helped, I didn't even know about ImageOps module, it looks really useful