Very strange results from RC - horrible jutting out sections on flat surface?
Answered
Hey all,
I'm completely stumped by this. I shot what I thought was a good set of about 140 photos of a flat stone wall. This is what it looks like in real life:
I aligned them in RC but had some severe issues. I realised it was likely due to some far away angled photos I took, so I removed them and started alignment again from scratch. This made the result look a lot better, so I proceeded with high quality mesh reconstruction.
Now I'm looking at the finished model and it looks horrible! Here are some examples of the bizarre artifacts I'm getting:
https://postimg.cc/rDSCTtfr
https://postimg.cc/kV2J8WLV
Here's a quick summary of the photos I took. They look pretty normal, right?
Is there anything wrong with the capturing process? All of the images are sharply in focus, shot at about 43mm with a Sony Alpha A7R II (42MP), ISO 500 with a shutter speed of 1/250.
I'm so frustrated. Anyone know what could be going on?
EDIT 1: just finished another mesh. The same thing is happening on this tree bark:
Here's a further away shot to show that the area affect appears to be the result of taking photos from further away. Could that be the culprit?
EDIT 2:
Here's a sort of "part 2" to my problem (see the other thread for more info). I realised what seems to be giving me these jutting out sections on my model is RC placing some of my cameras in completely wrong positions. See the following screenshots:
https://postimg.cc/z3GN6sJC
https://postimg.cc/wtgZJNMX
Why is it that two photos that were taken at basically the exact same distance from the object are aligned at such extremely different positions? No wonder my model is getting destroyed!
Can anyone help?
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hello, I believe this part would have better come together with this topic here
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Hi Lucia,
Just merged the two posts together. Any ideas about what's going on?
I managed to get better results on the tree bark by running alignment without using the far away photos. Why is that? I'm still processing the mesh, but it's looking like it will be a much better result.
Meanwhile, I tried the same with my brick wall model and the problem still persists. RC is treating two nearly identical photos as if they were taken from completely different distances. It's so frustrating! I can't really delete any more source photos otherwise I'll lose detail and end up with holes. -
Hi Lucia,
Did you ever get to the bottom of this? We've been having some issues with our new mirrorless z7 and I tested the A7R4 yesterday and it too isn't able to align flat surfaces correctly.
If you get the chance could you test scanning a flat section of flooring and see if it curves either up or down at the ends?
Thanks
Sam
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