ImportError: cannot import name 'compare_ssim' from 'skimage.measure'

This error occurs when you try to import the function compare_ssim from the module skimage.measure, but the function is not found in the module.

There could be several reasons for this error:

1. The function may not be available in the version of scikit-image that you are using. Check the documentation for your version of scikit-image to see if the function is available.

2. You may have misspelled the function name or the module name. Double-check your import statement to make sure it is correct.

3. The function may have been moved or removed from the skimage.measure module in a recent update. Check the release notes for scikit-image to see if this is the case.

To fix this error, you could try using a different function that is available in the skimage.measure module, or updating your version of scikit-image to see if the function has been added or moved to a different module.