Yes, I mostly meant that I don't get a great sense of "how many photos there are" in these datasets. I saw in the paper their citation [13] pointed to https://

Yes, I mostly meant that I don't get a great sense of "how many photos there are" in these datasets. I saw in the paper their citation [13] pointed to https://arxiv.org/pdf/2003.01587.pdf https://arxiv.org/pdf/2003.01587.pdf, which in section 3 says the following: We thus build on 25 collections of popular landmarks originally selected in [48,101], each with hundreds to thousands of images. So hundreds to thousands of photos are used, which is a decent quantity, but definitely makes the quality of the result very impressive.