Can't get a decent scan

Hello,

I’ve been trying every chance I get a free moment and have been unable to get anything close to a decent scan. I try all the different modes, and get my settings to where it’s seeing as much of the object on the depth camera, and seeing as little of the background as possible.

With the scanner completely static and getting a rather decent amount of scan data it loses track and the point cloud just spins while it trys to regain tracking, but while it does that it’s creating duplicates of the same part of the object that it has already started scanning. I’d love some help figuring it out. I don’t think it’s my computer, as that’s the only option I have. I can’t get the scanner to work with my pixel 4a 5g. The laptop is the following specs: i7 10750 h, 2.6 GHz 6 core, Windows 10 home, 16gb GeForce GTX 2060 with 6gb ddr6. It runs fusion 360 just fine and rarely misses a beat even when computing complex geometry.

Any help with this would be greatly appreciated as I have tons of things I want to scan, but for the life of me cannot get a scan worth using for anything…

Here’s a short video showing what I’m experiencing https://photos.app.goo.gl/4EPTZ827heKPucJw6

If the unit has any sort of dof sensors in it, they must need calibrating because they’re completely off… But I’m guessing there’s not anything like that and it’s trying to track purely off the scan based on my experience this far.

Thank you,
Zach Junquera

So, here are a few thoughts on this. First all objects you scan need to be 5cm cubed or larger. Second, you need to get views of all around it, that’s why there is a turntable for smaller objects. Third, you need to create a suitable “scanning” environment. For things on the turn table, that includes a black back drop behind the turntable. In either case you may have to use scanning spray on anything that is too shiny or translucent. Your settings also have an impact. I was skeptical about it at first also, but the more I use it, the better I realize what it can do. Can you show us both what you are scanning, and your Pop setup? We can better help you troubleshoot it if you do. I’ve even been able to scan a plush animal relatively accurately, so it can’t be that bad.

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Since I got a decent result on first try (sample model on the turntable) I suspect a user error.
Though, it also could be a damaged device.

But from the info I have so far a user error seems more likely. Did you try the sample first?

I was having the same problem. Then I started stopping at about 1000 frames. Now it is doing the processing.

Another idea to build off what others have said about creating a good environment is looking into some of the super black paints to paint a backdrop. The two best are the Musou Black (the blackest) and Black 3.0 by CultureHustle. I’ve actually thought about using it even on the turntable.

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thanks for the hints! I did some research an found this video, from 5:22 it shows no reflection of IR and seems ideal.

I’m having the same problem, the image starts morphing into weird shapes. I’ve seen youtube videos on how to slow the turntable down, but I see you’re not using one.

Same problem here. Scans start rotating for no reason.

I think the reason is that you rotated the object too quickly. The same thing happened to me a couple times yesterday. It is odd that, even after I stop rotating the turntable, the scanned object seems to keep on moving and rotating.

However, in Marker mode, it is very unlikely to happen (not always an option, however).

I have seen this selfrotating suddenly starting and being unstoppable, regardless how fast or slowly I turn the object. A similar, or even the same, effect occures with flat objects, like walls or boxes, when the scan suddenly starts “running away”, though the scanner is not moving at all, creating copies and weird morphs of the surface features.
I think that occures when the scanned object is poor of recognizable features, or repetative. The big problem is, though, that it’s running so fast that you have no chance for any countermeasures, and “undo” doesn’t help, either. The scan is totally ruined then, and you have to start from zero.

@eldkatten- I’ve noticed that the lighting can have some effect on that, too. You know how CCD-based cameras show a lot of flickering on some lighting products? I’m wondering if that causes some interference with the scanning, based on what type of lighting you use in the room where you’re scanning. I need to do some testing to see if there’s any variation with incandescent / flourescent / LED bulbs… I wonder if that might be a bigger variable than we’ve realized?

Unless you are trying to capture texture or color in the scanned object, the less light falling on the scanned object, the better.

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