CR-Scan Lizard 3D Scanner vs Photogrammetry - which one wins?

All KS pledgers :- I am sorry but I have no more hard information than you received in the email from KS. The FB group seems to have the most up to info, I can’t post a link here but you know how to find it 👍

I think the photogrammetry result would be improved by taking more photos at angles / heights in between those used, and (not sure if you did this) different distances from the object to be scanned. Would be interesting to see a comparison using a larger set of photos and showing the difference between using say only one distance from the object vs several, pictures taken at every 5 degrees of rotation vs 10, etc.

Dude, you can't just grab a camera and do photogrammetry, in your time lapse i can see you standing in one of your lights while you take a photo. You haven't adjusted your bounding box to direct where the sparse point cloud should focus on the reconstruction, that's why you have all the rest of your shop reconstructed as well.
And on top of all, how many pictures did you take, I'd guess about 50 from what it looked like?
Add a 0 to that. You'll be surprised.

..just more photos and use polarized filter...

Hi, thanks for a very interesting channel. I do scanning as part of my job, typically I scan mining equipment engines. My current scanner is a GoScan. I'd really appreciate your experience with the lizard working in tight spaces eg down the side of an engine in an engine bay. What I find is the GoScan, as good as it is, is just too big to get into maybe 20% of the places I have to capture, typically around the exhaust manifold. Having to be 400mm away from the object makes life really hard. I'd love to know how the lizard performs getting in and around somewhere where space to move is confined.

there are some ToF 3D depth sensors available for cheap like a Vzense DCAM710 (300 bucks) but i havent found a software yet that allows for 3d model scanning. i think ToF has more potential than structured light scanning, especially with a high resolution ToF camera.

Which file format is the best to use in fusion? Non stl i think?

Why was this in my recommendations list if I was looking for Bhagavad Gita audiobook? 
It indeed interested me when I was on 3D printing and been looking for 3D scanning a lot, though not ultimately and mortorsport even less… about 1/1000 of the time in the last 4 years or so… though I`ll have a look at CR-Scan Lizard.. pretty cool recommendation. Idk..
🙄😦🤔

when you scan it do you get the actual size? or do you need to manually mesure 2 points and then scale it?

I'mma be real, I've never, ever gotten good results from meshroom. Datasets I've gotten great results with in Metashape, are unintelligible blobs in meshroom.

So you compared a free photogrammetry program to a $800 scanner? Geez, how much did Creality pay you for this?

I don't get it, why would you scan motors or car parts? 🤔 what is there to make, that's not allready there?

Photogrammetry: How many pictures were taken ? How where they taken ? Did it capture enough ? Also no development spray was used here. If I take 10 shit pictures, photogrammetry will not be able to do much. I bet somebody who does a good job with photogrammetry would have just as good of a results as the scanner. It is 100% possible I guarantee it. It just takes more pictuires and better pictures. It would be better to have a good result in both cases first and then comparing the time and money spend to aquire such result

In general to do photogrammetry for a piece like this you need to shoot 150-200 photos including closeups of smaller parts, powder spray the piece and place retroreflective markers on the piece. this will greatly improve the quality of the mesh but your laptop will be in pain from the processing. Meshroom relies on CUDA so you really should have a beefier setup to tackle pieces with this many details.

Scan lizard turned out great, thanks for posting! Photogrammetry should've turned out better though. Meshroom is free but doesn't generate a great mesh, recap gives the best results from my tests. Shiny areas need to be dulled down even more or the surface will get bumpy, could use a better dulling spray since there's still a lot of shine. Also, your body is casting shadows as you move around so photogrammetry software will get confused even with slight variations. Putting your camera in full manual mode would help too since the more consistent the photos, the better.

Have you been using the scanner much since this video? I backed on KS and I'm trying to decide if I should REback on pledgebox

This would have been very good if you had put any effort into taking photos every 30 degrees at least and also from different heights in similar intervals. What has been seen in many other videos does not portray at all your results. Other than that the subject is good. You should think first and then do this same video second time, just te photogrammetry part, scan you already have.

Great review and results, I managed to find a lizard on ebay, so took the plunge. Scan results represent good value, the software is something else though.

I must be 20hrs into scanning an audi o1e gearbox, I cant tell you how many times the software has crashed, operating well within the specs of my cad workstation. I dont know if im missing something, but im down to 1x scan per project (sub 4gb each) not holding much luck merging them together given software stability so far.

Sadly I think i’ll have to return it, the software is simply not mature enough for any moderate engineering detail.

Well, I feel like I've been "BONED"...After completing the Creality Kickstarter and waiting for shipment on the SCAM Lizard, I got a message that Kickstarter took them down because of a lawsuit... I'm losing faith that I'll ever see it! NOW THEY QUIT UPDATING ME!!!

Do you know if there is a Mac software for the Photogrammetry? MeshForm is only Windows/Linux. Thanks!

Can you tell us the size of the 12v barrel connector? 5.5*2.5? or 5.5*2.1? or something else?

I'm wondering if it will work with Meshlab. That's an insane scanning software. Thought Fusion was tough, but that thing, is a real brain buster.

Not a fanboy, but a cheapskate.

Meshroom has the incremental scan pipeline.

This lets you take a series of photos, and it builds a sparse pointcloud as you go.

Edit your sparse pointcloud to get a better dense point cloud and model.

Great video. Small tip: For 3D scanning bolt holes can be difficult to pick up so leaving bolts in them partially unthreaded gives the scanner something much easier to pick up giving you an accurate location for the hole pattern.

For anyone using photogrammetry, use 3df Zepher instead of Meshroom. It is much easier and faster. I've used it for control arms, light housings, and even houses (with drone photos). The only tricky part is making sure the final model is scaled correctly and imported into CAD with the correct units.

You did a bad job at the photogrammetry sorry to say. But if you can afford a scanner, that is offcourse better.

I don't know what you've done, but I've had better results with Meshroom with only 20 odd photos.

And I'm not a fanboy. I've just pissed about with it a few times. It's also handy for stuff which is outdoors. Not sure how you'd manage that with the scanner.

I did photogrammetry 6 years ago that looked WAY better than yours.

Put the camera on a rolling mike stand, make a circle to follow around to maintain focus, and put a barrier behind the shots to minimize targets.

Very biased presentation.

fast and accurate photogrammetry needs a really high end pc, but if you can take high res video, film at say 24 frames a second (not sure if it gets any lower), save those frames as image files, mesh room should then have all the "photos" it could ever need.

While I'm a photogrammetry fan boy, I have to give it to the scanner in this case.
It would take A LOT OF WORK to get similar quality output from photogrammetry even if an experienced photogrammetry user did the work.
Given the equipment cost difference between CR-Scan Lizard and photogrammetry, the time needed for processing and skill level required for a good scan, it's a no brainer.

One other thing that wasn't mentioned in the video is that the CR-Scan Lizard 3d scan is already to scale, while the photogrammetry model is not. you'd have to do extra work to add scale to the photogrammetry model.

How'd you get it so fast?

Probably not much better than Photogrammetry, but you pay for the convenience of the real-time capture feed back.
What we really need is some affordable software to automatically enhance the 3D model.

the lizard looks like a great scanner if the tracking issues are reduced. its 0.05mm accuracy is better than i thought it would be.

You've pretty much made me decide to eventually get this scanner. Seems like the ideal solution for awkward to model parts.

Add more photos for just the sections with low detail and run Mesh again to verify if photogrammetry /can/ do the job as well as the scanner. Contrast and a smooth/solid background can also help improve results.

I'm gonna be that guy and say that your photos might have not been all taken the right way. You are leaving way too much gap between each photo, and there are areas in the object that might not have been covered well, hence the look of the model.
In the office our rule of thumb for photogrammetry is 10 degrees difference if there is a lot of detail in the object, so that means 36 photos for one revolution, and we go around the object 3 times. one being centered at the object and the camera parallel to the ground, one with the camera higher than the object and looking downwards, and one with the camera lower than the object, looking upwards.

And this is for an object that is simple with no overhangs or geometry that might hide other parts of the object.

Granted, if you have a good quality laser scanner, the laser scanner will result in a higher accuracy scan.

From my limited experience in photogrammetry it tells me that objects that are reflective, even if just slightly so can be a real problem as the surface tends to warp, now there are fixes to this I know (at least when using RealityCapture), but the best result I got was to use photogrammetry in tangent with a laser scanner. That way you will get the surface quality of photogrammetry and the mostly solid result of a laser scanner. I must say though, I really like that handy 3D scanner, seems quite nifty.

Which scanner is better? Revopoint POP 2: Precise 3D scanner with 0.1mm accuracy Creality CR-Scan Lizard capturing fine details of sight I think they have different ways of working

yoooo cr scan is looking pretty damn good! hopefully that shit is less than a 1000$ lol

Nice vid. the scanner did such a good job.

Thank you. This put me at ease over my kickstarter support for my lizard. Cannot wait to start using it and hopefully Mac support comes soon.

Worst comparison ever. how can someone who have never done photogrammetry and has no idea how to do it try to doit to compera it to a scanner. and even with the scanner you had to flip it over several times, coat it, re-scan because it still failed? just a shameless add for the lizzard

Of course your photogrammetry failed! You need between 100 and 150 photographs. You need to take so many that you are exhausted and bored, and then take some more. I'm sure the scanner is nice, but this was not really a test at all.

Amazing.