I scan my paintings on a flatbed scanner and then join the images. I was using an older windows app was $300 at the time Panavue, it had auto but I preferred fully manual for doing flags to join images.
Panorama Maker is starting to look like it. I wish it had more manual overrides, I think parallax issues of a camera compared to a flatbed image gives me more grief cause that setting isn't available so the software has to work harder to join.
If I do each row in slices and then join the final image I get a 600 MB massive crisp image. I was able to get it working perfect once and it will likely do the job!
A different app called PanoEdit worked faster but had some blurry spots, I literally did get a perfect scan joined, it took some effort and playing around with the Panorama Maker 5 software, but I'm glad I bought it. The trial software never seemed to work, plunking down the CASH to unlock the app helped. I paid $30 seeing it on sale on MUpromo and although had failures earlier plunked down the cash.
I'm elated that I have a $30 mac app that could be equal to a $300 PC app, I'm looking forward to using this application again.
I recommend the developers buy Panavue then grab a canvas painting and scan it on a flatbed and start joining the painting back together again, I'm sure you would be able to make improvements for Mozaic flatbed scanning.
But I'm impressed with this app and I have bought a lot of stitching apps that go nowhere. This one is a keeper, I tried your earlier versions and they didnt work, so this software is starting to mature and be a professional product.
Get the PRO!