CODEWITHSUNDEEP
pythonpyqt5python-imaging-librarytiff
FY Gamer
FY Gamer

Reputation: 297

Opening Tif file with PIL "PIL.UnidentifiedImageError: cannot identify image file"

I've a huge TIF file of shape (39906, 30365, 4). I want to use it on PyQt5, however when I use PIL to open the image it gives the error "PIL.UnidentifiedImageError: cannot identify image file". I've searched and it seems that PIL can open TIF/TIFF files, but it has to be 8bit and my image is 8bit.

What could I do fix it? Is the file to large to be open by PIL? Is there another option to open a huge TIF to be used with PyQt5?

It's not necessary to open the whole image. Actually, if I could open a 25% scaled version of the original would be better.

Pillow version = 7.2.0

Upvotes: 1

Views: 1405

Answers (1)

Mark Setchell
Mark Setchell

Reputation: 207465

If you are having issues handling very large images, consider using libvips, either in your Python code or in the Terminal. It is very fast and frugal with memory.

Here's an example for Terminal:

vipsthumbnail BIGBOY.TIF --size 10000x -o small.tif     # reduce width to 10000px

And see usingVIPSandShrink() here.

Upvotes: 1

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