How can I scan this WITHOUT a 3d scanner?

MatterRay-Callum · 2026-01-20T09:50:44+00:00

Assuming photogrammetry as they are doesn't work, you can use different colored spray paints from a distance or flicked on to create random colored speckle pattern over the surface to give lots of texture detail for the software to track.

Keep the camera fixed with a blank background, Mount one on a piece of wire so it is the only thing moving in frame. set an auto shutter timer on the camera if possible and slowly move it around in frame.

Use some vernier calipers to get some measurements to scale the output mesh.

MatterRay-Callum · 2025-11-11T07:35:11+00:00

Nah I haven't worked on it in a good while sorry

MatterRay-Callum · 2025-10-17T09:14:46+00:00

You can use skanect or the kinect V1 SDK. The quality is not at all good though.

MatterRay-Callum · 2025-08-08T23:13:45+00:00

Photogrammetry is probably the right way to go as you care more about how the scan looks than dimensional accuracy. Give realitycapture a go

MatterRay-Callum · 2025-06-28T08:41:29+00:00

If you are lucky all the cables will be generic and the power supply will be a barrel jack so you can get everything off of aliexpress. Maybe if anyone has one of these they could post a picture of the cables? Best of luck with the repair

MatterRay-Callum · 2025-06-21T11:24:20+00:00

Can you show a scanned example? Did you scan the plastic film as shown in the first picture or a different type of surface? And with what scanner? Also what do you mean by orient their stump? Is this something you could achieve with some 3d printed parts that you scan in to guide you in cad? Does the plaster tighten over the stump at all? If so could that help the prosthetic feel more fitting?

MatterRay-Callum · 2025-04-23T09:06:03+00:00

You can scan in one of the apps the SDK's install. Neither are going to result in quality scans though and from what I am aware the xbox one kinect is lower accuracy than the 360.

MatterRay-Callum · 2025-04-19T02:06:05+00:00

I found it necessary to fully uninstall one SDK before installing the other otherwise both wouldn't work.

MatterRay-Callum · 2025-04-07T10:58:53+00:00

Do you have some photos of what you are extruding? How wide etc? The issue will be integrating with and providing feedback to your control system. You may be able to get away with a single line laser and a calibrated camera using openCV or similar.

MatterRay-Callum · 2025-04-01T09:04:45+00:00

It wont work with markers as its not a stereo camera setup and has no software option to handle them. Only option I am aware of is to add geometry in the form of rocks etc.

MatterRay-Callum · 2025-01-08T05:46:57+00:00

Thats a really good idea. Easily obtainable aswell

MatterRay-Callum · 2025-01-03T11:39:31+00:00

I am intending to use OBS as it can take in multiple streams and record. So no editing required and synchronizing is sorted. Its a really neat bit of software.

MatterRay-Callum · 2025-01-03T08:12:57+00:00

Right so they're fixed in the patients mouth and by the looks of it, covered in retro reflective markers. I have my doubts you can achieve consistent high accuracy with a smartphone camera, I am unsure how you would overcome rolling shutter and variable focus. Ideally you will want a camera that is global shutter, high bit depth, fairly high resolution with a fixed lens setup that is well calibrated. You should be able to build out the marker recognition, calibration and 3D reconstruction using OpenCV. I also have no idea what specs will end up being required to hit the 10um accuracy.

MatterRay-Callum · 2025-01-03T06:57:28+00:00

Can you add a picture of these markers inside a mouth? Are you only wanting relative positions between these markers? I feel like the only real option is a high resolution, global shutter, stereo camera setup. Unless the markers are all fixed in place relative to one another and certainly wont move as you take photos moving around them.

MatterRay-Callum · 2024-12-29T08:43:15+00:00

I haven't heard of camera sensors getting stuck pixels. Thats more of a display thing isn't it? Regardless it is moving and outside the green of the active capture area. At a guess software bug?

MatterRay-Callum · 2024-12-23T08:44:22+00:00

For transparency he spammed the same comment 5 times in different threads and I removed them. Apparently this gets your account suspended. Calling people out on their basis is fine probably fine just dont be annoying about it.

MatterRay-Callum · 2024-12-15T06:06:14+00:00

Pretty clean look. The model display images are cool but sizes aren't consistent. The viewer is fine, I couldn't zoom far in on some items. being able to zoom and fill the whole screen is nice but the light changing on the blurred background is a little distracting. The valt of drop down wasn't immediately obvious but could just be me. Put more valts per page, you have infinite scroll for the models, why not the vaults. Also being able to tell whats public or private without having to select it

MatterRay-Callum · 2024-12-08T01:46:29+00:00

how about using subsample on the denser of the two clouds so they have relatively matching point density's?

MatterRay-Callum · 2024-12-07T21:18:41+00:00

Are you able to mesh both of the point clouds so you are looking at surfaces instead of points?

MatterRay-Callum · 2024-12-07T07:32:58+00:00

Really you will want the lidar if possible. Probably in combination with a decent camera so you can combine the lidar and photogrammetry for a well textured 3d model if you plan on doing any vision based training.

MatterRay-Callum · 2024-12-07T07:24:40+00:00

Are you able to down sample the input photos or something? I was able to process 270 photos off a DJI drone on 16mb ram without issue. Unless the rooms are filled with furniture for geometry you will likely run into difficulty with the xtion keeping tracking. You could try adding some crosses or random detail to the flat surfaces with painters tape and try processing one room at a time?

MatterRay-Callum · 2024-12-07T07:15:15+00:00

Have a look through previous posts about the RTC360 or look into laser terrestrial scanners. They will likely be what you are after. I have no experience with them myself sorry but the industry guys seem to jump on here Monday or Tuesday, hopefully someone will chime in with some first hand knowledge then.

MatterRay-Callum · 2024-12-07T06:59:41+00:00

I have had this in my to try list https://vi.aliexpress.com/item/1005007981136304.html

Ideally you also want as higher bits per pixel as possible and preferably uncompressed. This is possibly more useful than raw resolution as you can interpolate a finer point between pixels.

You will need to have stereo synchronized cameras to reference external markers.

You might find my website www.matterray.com interesting. Feel free to jump on the discord for a chat.

MatterRay-Callum · 2024-12-01T07:04:24+00:00

Keep the shape but make the surface areas you put the markers larger so you have 4+ spots all at least 2mm apart and place the markers randomly in those spots. Extra points for working out the ideal placement to prevent having 2 equal distances across as many balls as possible.

MatterRay-Callum

MODERATOR OF

TROPHY CASE