I am experiencing visible patches on my photogrammetry scans of humans. Easiest seen on white and black clothing. This has been happening for a few months now, but I can’t seem to find a texturing setting that could fix this. I’ve tried photo-consistency vs visibility based, and correct colors, as well as different UV methods, but I still find these glaring patches.
I kept thinking it’s a dark or bright camera, but In the same region on a dark shirt I’ve seen light patches, and on white shirts dark patches.
The patches usually appear low res, not sure if that’s an indication.
Any ideas?
Hello Ryan,
what are you exact unwrap and texturing settings here?
How do look those parts just as unwrap?
I should also note that this seems to come up with solid colored clothing way more. I don’t have an example with a textured clothing.
And here is an example of the UV wrap/seams and the corresponding texture we got.
The UV map doesn’t necessarily line up with the patches we find on the model.
Which version are you using? There is one similar bug in 1.5.1 version, which should be solved in next release.
Is it possible to share the data for our internal testing?
Unfortunately I cannot share our data. But I can say we are running v1.5.1.118081.
I understand.
Can you try this to compute in 1.4.2 version? If there will be the same patches?
Unfortunately I can’t test that on our work machines while we are in production.
What I did do was a test of different permutations of this project on our work machine and on my personal home machine.
You can find the stats here:
Re doing the unwrap in the project file didn’t solve it, re-reconstructing the model in the same project didn’t solve it. Only on my personal computer did starting from scratch with a new RC project file, did I get a result with no patches. I should also note, all of these tests used camera xmp files for pre-alignment.
OK, so following your tests it looks like something happened during the alignment, as the fresh start doesn’t have such issue.
How are you using the XMPs? As locked? In all cases?
I can share the camera prior settings:
They seem to be general. After alignment or meshing do you see some misaligned cameras?
Not in this case. We have had some cameras misalign in the past, but nothing that would catch my eye in these examples.
