Recently I scanned thousands of family photos, but I didn't have a good way to get them oriented correctly before scanning. I figured I could "fix it in post" .

If you upload an incorrectly oriented image to google photos, it will automatically figure that out and suggest the right way up (no EXIF data). So I set about trying to find an open-source way to do that since I'm self-hosting the family photos server.

So far, I haven't managed it. I found a project doing it using pytorch or something, but it didn't work well.