David Sls-3 3d Scanner
Bartley Trowbridge
The DAVID SLS-3 HD by David Laserscanner is the upgraded version of their Structured Light 3D Scanner featuring a HD cam with higher 1920x1200 resolution with enhanced detail, improved accuracy and software features. The new SLS-3 HD is driven by the updated DAVID version 4.3 3d scanning software.
The DAVID-CAM-4-M now has improved firmware which insure greater alignment accuracy between scans. Its resolution (1920x1200) it has a really crisp image and allows scan resolutions of 0.1% of the object size (down to 40 micron)! Also we include a new megapixel camera lens from Computar - better image quality and easier to handle.
The new DAVID-SLS-3 HD scanner employs the innovative Structured Light technology, which allows precise 3D scanning in a matter of seconds. The scanner is mobile and can be placed easily in front of the surface to be scanned. A single click in the well-proven DAVID software starts the scan - and a few seconds later the digitized 3D model shows up on your screen!
This way you can subsequently scan all sides of the object, and finally combine them to a closed 360 model. The modular hardware setup allows a flexible adaptation to your object - any size from coin to couch is possible!
The results can be exported into common 3D file formats (OBJ, STL, PLY) and processed in other applications, e.g. for rapid prototyping, inspection, product presentations, archaeology and cultural heritage, works of art, computer animations, video games... The limits are set only by your imagination!
The Getting Started Guide is available in English. A more detailed User Manual can be found here.
For more information, please visit-
www.david-3d.com
Contents of package
One of the great advantages of the David SLS-3 3D Scanner is its modular setup is that it can be adjusted for small and large objects. This 3D scanning tutorial shows you how to set up your scanned for the object size you wish to scan.
This video tutorial runs you through the process of Calibrating your DAVID SLS-3 3D Scanner to ensure the DAVID software knows your 3D scanners exact configuration. Only then can it can create precise 3D scan data.
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It's really important to know WHAT you want to scan. Although the resolution of the Fuel3D is really nice, it has a VERY limited range of use, in terms of size of the item scanned and materials that are scanable.
We don't have one, but I have seen one in use at a local distributor last year (I don't remember the brand). I found it rather disappointing: it couldn't scan inside an empty cup, under armpits, under a nose, under a car model, in an open mouth,... All these very common things left huge open gaps and/or defects. And then, once you had the scan, you could not really work on it, it was a huge mess of mesh. It only worked well for very simple objects, which you could as well design in 3D.
So, whatever your scanner model of choice would be, I would suggest that you go to a local distributor, and have him scan your typical objects. And let him go through all the post-processing, editing and cleaning-up in front of your eyes. I think that is the only way to know if it is good enough, and if it is workable for you.
Also carefully verify that the scanner produces watertight solid 3D-models. Often 3D-scanners will only produce surface-objects (even with holes in it), that you can not 3D-print. These surface-objects may be good enough for rotating an image on-screen, e.g. for a game or for 3D-visualisation, but not for printing. You really have to see it with your own eyes, I think.
I have used 3D Fuel. If you want to use it to scan faces or something flat it works so well, it has very good resolution for those applications, for "flat" things, but i don't like very much with big or deep object, it has eye fish effect....
Anyhow, I think the David is more open, more modding friendly and more versatile. distance and angle between camera and beamer are adjustible and components are more or less industry standard. For someone who is tinkering with a 3d printer, I could imagine the Einscan might be limiting at some point.
I didn't find more detail about the range of sizes, the Einscan can handle. They say maximum 200^3 mm^3 with the turntable and 700^3 mm^3 without. Is that maximum total object size or maximum size per scan? And I didn't find anything about minimum size. For the David you find lots of user examples from coins or even coffee beans (only with mods) up to cars. Most Einscan Examples seem to be in the range of 100..200mm.
The turntable is far less important for SL compared to laser scanning, at least from what I can say due to my first 2 test scans :PThere I usually took like 8 scans around, stitched them together and then looked for missing details like holes due to undercuts. I then chose good orientations to get a nice shot of those regions, often tilted, then one from the top, one from the bottom. If there is still something missing, take another shot. The turntable is only good for very scanning friendly models in my opinion. And still, I find it sexy to have one. Hmm, shouldn't be to difficult to build one, the David software is open for custom hardware ;)At least a rotating platform might be nice that you turn by hand.
I am in the same boat I had a demo of the David scanner at the Mach Show in Birmingham it was not a good demo by any means but when I look at the Ein Scan, I have a feeling the software might be an issue. I have no reason for saying that BUT if the software is buggy and un helpful I think it would be a nightmare. Also the Einscan has just released there new scanner available in the UK for the last 4 weeks so getting hands on one to be demoed is hard. The david scanner now comes with a HD camera but when you start pricing the table up 700.00 just for the turntable I didn't think you would get much change from4500.00
The Einscan is very simple to use with the turntable, you can scan an object within minutes, or do a free scan for more complex objects, witch takes as long as you see fit to get all the details in hard do reach parts.
For me it was a price/usability purchase, while I don't mind to tinker, I hated the amount of work to work with the David system (some years ago), the Einscan one button (like Cura) scan option is just great
@xeno, can you shed some light on the sizes that can be scanned with the einscan? is 700mm the upper limit for a single scan or for the final object? And can you make closeup scans of things like 50mm tall?
Smaller scans are a bit tricky, as the scanner has a minimum distance to the objects, the camera's and projector are set for certain distances, and you can't move it closer then the minimum distance, or it won't calibrate.
I tend to use the turntable a lot. It simply saves a lot of time. Instead of having to babysit the scanner while its doing a scan (Make a scan, move object, repeat), you can place the object on the table and tell it to make 50 scans and auto stitch it.
In most cases having 8 - 12 scans of a single object gives pretty good results, but more data tends to increase the quality of the scans. Especially the smarter smoothing algorithms that are used to filter out the high frequency noise of structured light scanners benefit from more data (at the obvious cost of memory & cpu cycles).
Just been talking to my David Scanner Supplier he tells me there is a new Dual Camera System becoming available, I would wait and see the results but could be Good, He also told me of a new Dual Head 3D Printer coming out from LeapFrog, which also looks good.
Don't know about the scaner but the dual leapfrog printer it's like a copy of bcn3d sigma dual extruder printer, but with pancake feeders. I would stay away from that leapfrog printer, specially since bcn3d it's fully opensource.
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