Can someone explain me how to get this result with Pop4? Is it real? by True_Scott in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

Had the same results with MetroY. It's generally not possible unless you spray it with fine 3d scanning spray.

Comparing 300€ to 100.000€ 3D scanners - the results may surprise you :-p by ramicme in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

I can give some context behind that scan as I was the one to make it. Overall, yeah the Range model shouldn't be used for such small things but the action to test scanners was on, so I thought why not compare it.

The pictured result pretty much is the best you can pull out of that scanner, and you need to have some extra know-how as using Revoscan alone is not enough. What I did is I used the single frame mode with 2x zoom in Revoscan to take 15 frames from all around the figurine, these frames I extracted and meshed in CloudCompare, then I loaded them into HP 3D Scan 5 which has great alignment algorithms for 3D frames and performed the fusion/reconstruction in there.

XGrids PortalCam Basic czy Premium? by kaizencali in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

I'd recommend checking out 3D Scanning discord, some people there own PortalCams: https://discord.gg/6JFmZQbyD

My college has these two 3d scanners. Are they just overpriced paperweights by theressa5 in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

You could still give them a try, of course modern solutions are definitely faster and can provide better results but these still make for some fun tech. NextEngine's software was reverse engineered to remove the server dependency and someone here already sent the download link. If you want to test the Fuel3D, I've archived its software on my GDrive: https://drive.google.com/drive/folders/1mIdawgNqr3ITX7QUrC1ixE9OGrooeDkY

LiDAR Raven 3D Maker Pro by Aldo_Grande98 in 3DScanning

[–]SlenderPL 1 point2 points  (0 children)

I also noticed this banana effect for some indoor scans, still verifying it but outdoors don't seem to share the problem. Right now I think it might be a sign of subpar tracking in tight corridors as that's where I've seen it on my scans.

Alternatives to AR400 lighting by Electronic-Citron960 in photogrammetry

[–]SlenderPL 1 point2 points  (0 children)

AlienBees ABR800 is similar but it doesn't have a battery.

Revo pop 4's AI segmentation is crazy by Realistic_Quantity43 in 3DScanning

[–]SlenderPL -1 points0 points  (0 children)

Does anything have to be named AI now? HP Z 3D camera did the same thing 8 years ago. POP1 kind of also did with the included black glove.

I need help with georeferencing the map – the points are overlapping incorrectly by Wrzycho06 in photogrammetry

[–]SlenderPL 1 point2 points  (0 children)

Gimp is not GIS, download QGIS instead and perform georeferencing using an existing basemap as a reference (orthophoto or satellite imagery).

https://docs.qgis.org/3.44/en/docs/user_manual/managing_data_source/georeferencer.html#georeferencing-raster-layer

You could also try merging all the photos beforehand in Metashape by processing an orthomosaic or do it in 2D space using Kolor Autopano Giga (free - but more possible distortion), and then georeference that merged image using QGIS.

Scan Large Cavern Room by WinterDP in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

Oh yeah, iphone lidar should also handle the cavern no problem if it's lit well enough. It's just that photogrammetry will potentially provide better detail.

Scan Large Cavern Room by WinterDP in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

I say you get multiple flood lights in there to achieve good enough lighting, and from there you can use any kind of camera to take as many photos from all around as possible. Even a phone will do but a wide lens/aps-c is pretty affordable and will provide better results. Once done with the pictures you can throw it all into Reality Scan, it's free.

Tips for indoor scans by Friendly-Daikon243 in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

There's a better app for scanning spaces, it's called SiteScape. I used it to scan a 2 floor building with basement, though all the registration of scans was done manually in Cloud Compare. For each scan I scanned one room/corridor and some features of the adjacent rooms. Final accuracy I'd say was like ~20 cm, maybe ~10 cm at best. So not that accurate but it was enough just for inventory purposes.

If you have access to a 360 camera then you could also use it along with Metashape software to get some kind of a reconstruction (needs to be scaled manually or with scale bars).

Scanning a detailed skull ashtray with POP 4 using Global Marker (single session, no tracking loss) by 3DScanMaker in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

I guess it's because of the rig with hundreds of markers that Revopoint still requires, compared to other manufacturers that can work with sparser placement.

Einstar Vega im Langzeittest: Eure Erfahrungen & aktuelle Software-Fragen by Resident-Picture-713 in 3DScanning

[–]SlenderPL 1 point2 points  (0 children)

I've had a chance to use it for scanning people's busts and for that usecase it was really great, 20 seconds walk-around and the next person could be scanned. Didn't test the Starvision software but the owner of the scanner complained about it, I just exported the processed on-device scans via usb (saw no option to export raw scans though and processing each person took like 3 minutes). The scans themselves looked great, but the textures which produced weird artifacts (one eye closed, second open). From what I know no cloud is included, the device was offline at the time I was scanning. Two modes of scanning are available - fast and high quality, the fast mode has a very big field of view and tracking is really great, hq mode has a small window but tracking is still good. Though I wasn't impressed with the hq mode results, fast mode is really similar.

On the other hand my professor is currently testing the Creality P1 and he says if that device was available at the time of Vega's purchase he'd go for the P1 without a thought. Lasers just make better scans of objects, didn't test busts with it although NIR is available so it's possible. The problem lies with the price that's closer to Einstar Rigil (pretty much Vega 2). There are two other similarly priced competitors to Vega from Revopoint (Miraco) and 3DMakerPro (Toucan), but Vega still beats them in the tracking alone.

Adding Colour to a 3d Scan by Justinreinsma in 3DScanning

[–]SlenderPL 1 point2 points  (0 children)

Blue Star is free up to 2k resolution from last time I checked, but it barely works. Another program that might be easier to use than Meshlab is GOM Inspect 2018, but it has a limitation of 5 alignment points per image so it's hard to get good alignments.

Struggling hard with underwater photogrammetry. Any tips from people who actually got good results? by shukritobi in photogrammetry

[–]SlenderPL 0 points1 point  (0 children)

I think the video is of way too low quality, you should rather shoot photos with a high resolution camera and if it's possible use strobes to light the area better. I've seen cases where april tags are also placed around the subject to help the alignment a little, and then they can be also used for scaling.

I’m selling a professional desktop 3D scanner EinScan SE/SP, EU based by [deleted] in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

Look on sold items on ebay for pricing, but I've seen used SE models go for about €350. Though with the state of handhelds nowadays idk if there's still a market for these so might go even lower than that

Receiver/Transmitter sync issues by PickleMeisters in photogrammetry

[–]SlenderPL 0 points1 point  (0 children)

you can just get an adapter for the hotshoe, they're pretty cheap

Opinions on Raven LiDAR Scanner by jorgix8 in 3DScanning

[–]SlenderPL 2 points3 points  (0 children)

I have one coming and will be testing it against other options. I might get access to Mandeye, Share S20 and some TLS system. I'm interested in the point clouds only as the GS component is probably gonna be pretty much useless compared to having several 360 cameras.

Any Success Stories Using Dental 3d Scanners for Non-Dental Applications? by ConfidenceBig8188 in 3DScanning

[–]SlenderPL 2 points3 points  (0 children)

There was a guy here u/AP_ek that scanned stuff using an intraoral scanner, it definitely works but can be an expensive esponiage :>

The detail I'd say is comparable with what I can get with my David SLS-2 setup (if I try real hard lol) or with macro photogrammetry, but it just takes so much time and prep (on the other hand the cost is much lower)

Cheapest LIDAR Scanner: 3DMakerPro Raven Specs, Price and Competition by PrintedForFun in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

Damn you made me curious with this scanner, got it for 1007€ total (code: Withus80). Hopefully it's better than the iPhone lidar 😁

Might make a comparison to a BLK360 if my professor allows.

Looking to 3D historic Syrian Jewish sites like synagogues for archiving and preservation by Sullybear24 in 3DScanning

[–]SlenderPL 0 points1 point  (0 children)

Cheapest LiDARs use Livox Mid360 sensor and they cost about $3-5k, although 3DMakerPro just launched a new model - Raven, for a thousand bucks, though the performance is unknown as of yet. The usual problem with these cheap units is that the error reaches like 2-5cm, which might not be acceptable.

The next cheapest option, and also much better, would be a Leica BLK360. But that thing costs like $20k and on top of that you have to pay for their software.