Bug in matcher when using images not paths

[reynoldscem-oculo]

Hi,

In the match method of RegressionMatcher, if you called match with PIL.Image instead of paths, but also attempt to do upsample_preds you get a fault as you will attempt to treat them as paths later here:

RoMa/romatch/models/matcher.py

Line 657 in 905ff76

im_A, im_B = test_transform((Image.open(im_A_path).convert('RGB'), Image.open(im_B_path).convert('RGB')))

[B1ueber2y]

Relevant: #73

[Parskatt]

Should be working now since #73 was merged.