Scanning a Real Scooter (W.i.P.)

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Scanning a Real Scooter (W.i.P.)

Postby hal » Sat Dec 11, 2010 12:28 pm

Hello davidians,

It's a long time that I had in mind to scan a big and complex object. My question was: how accurate is David (working without panels)? Can I scan many pieces, from a big and articulated object, and marge all of them togheter, without problems or discrepancies?

Time ago I've proved to myself that David is great (precise enough), just scanning a little model of motorbike (with panles).
I've dismantle it and scanned the separated pieces. At the end, all the little props fit togheter perfectly, and I was able to rebuild the bike model into my 3D editing software. No problems.

Now: Ok, I haven't a real model of the Suzuki bike GSX 1300R, but I have (or better, I must to say I "had") an old Piaggio scooter, the "Sfera 50". The idea is to dismantel the scooter (is broke and stay sitted in my basement for many years) and scan all the separated pieces. For this purpose I need: a lot of time, 4-5 white spray bottles, David Laser Scanner without panles.
I've worked on it last Augost and a couple of week-end in September. Unfortunately I've no finish this project, till now, because my spare time is drastically reduce. I still need to scan some pieces. I hope to do the job soon as I can.
My initial thoughts were to open this thread only at the end of the whole work, but I'm scared to came too much later :D
And today I've read this post, so I'm encouraged to share my experience.

This is the Scooter:

MatM_S50S_TheSfera50Scooter.jpg

During the dismantling:

MatM_S50S_Dismantle.jpg

All the pieces were coated and, if the surface was big and smooth, some markers were created on it for a better alignment:

MatM_S50S_Coating and Markers.jpg

To be continued...
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Re: Scanning a Real Scooter (W.i.P.)

Postby hal » Sat Dec 11, 2010 12:46 pm

... continue ...

Here you can see a camera view, during the scanning work, and some inner parts of the scanned scooter:

MatM_S50S_Camera view and other parts.jpg

This is one side of the scooter's body, with the "Sfera" logo visible in the depth image:

MatM_S50S_Side with Logo.jpg

The motor, completely dismanlted:

MatM_S50S_Motor scans.jpg

... to be continued ...
PC: DELL M90, Intel T7200, 4 Gb Ram, nVidia Quadro 3500FX.
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CAMs: USB CCD Color (1024x768, 30 fps) & Canon EOS 1000D.
LENS: 12 mm & VariFocal 3,5-8 mm.
PROJECTOR: ACER K11 & DELL M110.
LASERS: 5mW and 16 mW.
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Re: Scanning a Real Scooter (W.i.P.)

Postby Khalid Khattak » Sat Dec 11, 2010 7:57 pm

Incredible work Mattia..as usual... :shock:
I always love to watch your work:).. What a smooth transition between the scans.. Really loves that:)
What Gearbox you are using and whee can be purchased?
PC: Dell Inspiron i3, 2.27GHz,4GB RAM,64 bit windows 7
CAMERA:
David CCD Mono USB
LASER:
David 5mW Green line laser
PROJECTOR:
3D LED Mini Projector 250lumens, Native 1024x600
[b]http://free3dscans.blogspot.com/
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Re: Scanning a Real Scooter (W.i.P.)

Postby C4ptain_Mike » Sat Dec 11, 2010 9:41 pm

How do you go about getting everything to line up so perfectly, I have a real hard time in shapefusion, even if lines up pretty good its never perfect especially around smaller details.
www.michaeltaylor3d.com
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Re: Scanning a Real Scooter (W.i.P.)

Postby WalterMo » Sat Dec 11, 2010 11:10 pm

C4ptain_Mike wrote:How do you go about getting everything to line up so perfectly, I have a real hard time in shapefusion, even if lines up pretty good its never perfect especially around smaller details.


Let me answer instead of Mattia:
Perfection from the very first step to the final result. Means very stable rig, precision 90° corner, backlash-free motor & gear combo and of course a lot of experiance.

I am very curious about the complete scooter.
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Re: Scanning a Real Scooter (W.i.P.)

Postby berni » Tue Dec 14, 2010 2:03 am

MatM_S50S_Dismantle.jpg

All the pieces were coated and, if the surface was big and smooth, some markers were created on it for a better alignment:


I am impressed with the quality of your scans, may I ask what you used for markers. Thank-you.
Berni

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Red laser with Greg's controller
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Re: Scanning a Real Scooter (W.i.P.)

Postby Khalid Khattak » Tue Dec 14, 2010 6:07 am

I think the body color is black/dark he just removed by hand some white spray at certain locations..
The best practice is You can paste small printed circular Dot (similar to the calibration panel) on the specific locations of the object for later manual alignment purposes.. At least 03 dots should match for 2-scans...
Regards
PC: Dell Inspiron i3, 2.27GHz,4GB RAM,64 bit windows 7
CAMERA:
David CCD Mono USB
LASER:
David 5mW Green line laser
PROJECTOR:
3D LED Mini Projector 250lumens, Native 1024x600
[b]http://free3dscans.blogspot.com/
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Postby hal » Tue Dec 14, 2010 1:59 pm

Hello to everybody,
Thanks for your comments. I hope to find some time to post other images soon. :D

Khalid Khattak wrote:What Gearbox you are using and where can be purchased?

mmm did you mean the motor which moves the laser? If yes is this.Here you can see its family.

C4ptain_Mike wrote:How do you go about getting everything to line up so perfectly, I have a real hard time in shapefusion, even if lines up pretty good its never perfect especially around smaller details.

As Walter wrote, you may achieve these results only keeping hight the precision in the whole process. I have no special tricks, sorry :wink: .

WalterMo wrote:I am very curious about the complete scooter.

Me too, Wlater, me too :lol: . I'm scared that at the end, when all the scooter will be assembled, it don't start! Maybe first I need to change the candle :wink: .

berni wrote:I am impressed with the quality of your scans, may I ask what you used for markers. Thank-you.

As Khalid Khattak correctly answered, the markers are simply little portion of the scooter surface without coating. The motorbike is dark, so I've removed the coating (cyclododecane spray) with a wet sponge.

Regards to all,
Mattia
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Re: Scanning a Real Scooter (W.i.P.)

Postby Khalid Khattak » Tue Jan 18, 2011 3:41 pm

Any updates on this project Mattia?
PC: Dell Inspiron i3, 2.27GHz,4GB RAM,64 bit windows 7
CAMERA:
David CCD Mono USB
LASER:
David 5mW Green line laser
PROJECTOR:
3D LED Mini Projector 250lumens, Native 1024x600
[b]http://free3dscans.blogspot.com/
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Location: Pakistan

Postby hal » Tue Jan 18, 2011 4:06 pm

Hello,

Unfortunately I need to find some more time to finish my project. Damn... the day have only 24 hours... !
Ok, I promise that in the spare time, I'll finish it, first of the next summer (so, it will be 1 year of W.i.p... :oops: )

Regards
Mattia
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Re: Scanning a Real Scooter (W.i.P.)

Postby SooS » Thu Jan 20, 2011 1:18 pm

Good things take time ;)
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Re: Scanning a Real Scooter (W.i.P.)

Postby Khalid Khattak » Sat Nov 24, 2012 8:39 am

SooS wrote:Good things take time ;)

Yes,he can now save time using great SL in David.
PC: Dell Inspiron i3, 2.27GHz,4GB RAM,64 bit windows 7
CAMERA:
David CCD Mono USB
LASER:
David 5mW Green line laser
PROJECTOR:
3D LED Mini Projector 250lumens, Native 1024x600
[b]http://free3dscans.blogspot.com/
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Posts: 930
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