Impossible alignment with repeated wall patterns?
Yeah I have no idea how I can fix this problem... I cant align the cameras at all no matter how many control points..
There are patterns on the wall that repeat like this.. any ideas here?
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This is a difficult room to be sure. Everything is against you. Everything is glossy/reflective. Lots of repeating patterns. Light is less than ideal. And its cramped. Basically everything that your told to avoid is in this room.
A couple of tips for better results next time.
Use ISO 100. A lot of the bumpiness in the model is from the camera noise.
Don't use aperture priority mode. The shutter speed is changing between shots. In one shot the toilet or sink is bright and then higher up with the window or mirror light the camera's exposure adjusts to the brighter light and the toilet/sink are now very dark. If you was shooting manual the toilet and sink would be the same brightness. Reality Capture is dumb and will think these 2 things are completely different subjects.
White balance is constantly changing. Outside is very blue so it makes the wall by the toilet very yellow to compensate. The light on the ceiling is very pink so auto white balance adds more green, and the light by the mirror is green and again auto white balance is compensating. Each frame looks good by itself but RC is dumb and can't tell it is the same object if in one frame it is blue green and the next red orange. If you shoot raw you can adjust to one white balance that looks good across the most pictures.
Overlap. It looks like mostly a grid like pass on each wall shooting perpendicular, which is fine. Your scanning method looks good. One place i had a hard time though is finding common control points from one wall to the next. Example: I could only find 3 pictures of the corner that the wall with the door and the wall with the window meet at the top and none at the bottom corner. For this room what would have helped is the diagonal method standing in one corner shooting the opposite. The each wall by its self was covered good, but where they meet was hard for me to find.
I'm sure, with the raw files, I could produce better results.
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It's hard to say from just the 2 screen shots, but the best generic advice I could give on a hard subject like that would be take more pictures (for a small bathroom 200-400) combine multiple techniques. I would start in one corner and shoot diagonal
then shoot the room in a parallel straight on almost grid pattern
And then finally what I would call the pano where you stand in one spot at a time and take pictures overlapping about a third from the last at every angle you deem necessary. Up, down, and side to side. I found a good example on the internet
Not all the photos will stitch, but enough will. Multiple passes at varying heights will also help, as photos all at the same height won't provide much on the height of subjects in the photos.
Here is a couple of rooms I just shot the other day.
as you can see, I will use maybe one pano in the middle of a squarish room where on longer rooms I might shoot 2 or 3.
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Well, I did three separate heights in the room in a grid pattern. Normally this would never be a problem but the wall has a repeating pattern so the software is getting very confused. I had taken 220 photos and I dont think I can solve this with patterns similar on three separate walls..
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The only other thing I could think of is a higher megapixel camera that could resolve the imperfections in the pattern like dust and scratches, and using a tripod so that motion blur doesn't destroy those fine details. A wide angle lens might also fix this problem, as it can capture unique features in one shot...ie bathtub window and toilet.
With enough trial and error I think a smart phone could do it but not worth the time. 2 weeks on a bathroom not fun, but 2 weeks on a bird bath, a garden gnome, wooden chair, a person sleeping ( so the don't move ) and a cool bug is a lot more fun
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Well, I used a tripod and a fairly good DSLR. The problem is the software and not how I took the pictures.
I don't think you understand, there is no camera that provides a 270 degree angle shot for 6 feet away.
I'm hoping one of the devs can chime in, there are no imperfections in the pattern. The problem is that there the same patterns on three separate walls. And RC gets a little crazy trying to find a solution for the alignment.
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And what about putting some markers in the space to help RC a bit ? (there is now automatic markers in the last version !)
You will have some editing after, or you could also shoot with and without markers and exclude the images with markers from texturing.
What is your lens focal length ? For this kind of space I would recommend a 16mm eq on a full frame.
More overlap will definitely help ! Take 1000 pictures if you need, and as Steven said, mix techniques. I would add the "random shooting" : just shoot handheld (yes, you will need to go a bit high ISO) at random positions and orientations all over the space (don't forget to change the height as well, close to the floor, close to the ceiling), and eventually RC will find the connections. It always does when you have enough pictures !
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The smallest plainest bathroom I could find. With enough information captured ( either a high megapixel camera, or more photos ) even the most difficult subjects can be done. Look at the hose from the faucet. The dirt on it provided the features needed. It even got the plain solid white glossy toilet seat to my surprise. I did't bother with trying to get the whole room and shot as quick as possible.
Model
https://sketchfab.com/models/53792b74d2f349218d9d3eed5e8cb735
Source Pics
https://drive.google.com/open?id=1KuZ4SmNZAmcyogwg2W2PsUCqojC1HHRg
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Try several alignment settings (sensitivity, overlap, max features...).
You can also try to add control points (tie points), this should be easy on this pattern.
And by the way, I can't find your alignement result, can you post some informations and screenshots ? how many components do you have ?
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My 50 cents:
Other than changing the repeating pattern into a non-repeating (scratches, markers, newspaper pages or as suggested a wider angle), there is not much hope to solve this since it is unsolvable. If too much of one image has the repetitive pattern, RC will confuse them no matter what.
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I've been trying to align my pictures with zero, 1 - 10+ control points. All with no luck because of the repeating wall pattern which is confusing RC. First i thought I didnt have enough pictures but that wasnt the case, its the repeating patterns in the wall as in the picture. They are all over the place in the bath room haha =/
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yes, but if we had more informations we could maybe give some advices... for example, if the sensitivity was too high, I would try to lower it to try to avoid the false positives... And one of the false positives seems to be on a side of a picture, so maybe go from "low" overlap to "medium" or even "high" could help...
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I have tried all sorts of settings, overlap, detector sensitivity, but I have not tried down scaling. (There is also a masking feature which is new from the help menu. I will look into that as well.
This is the only room I am having issues with and for obvious reasons.
Ill keep you posted if there are any other options such as masking that work.
Thanks for the comments
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Sure, Ill upload it to google drive later today. This one is a doozy!
Here are a few models I have recently created (Though I want to clean them up a lot so I can optimize them for VR)
https://sketchfab.com/Chubert3/models
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