[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 488: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/bbcode.php on line 112: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4807: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3904)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4809: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3904)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4810: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3904)
[phpBB Debug] PHP Warning: in file [ROOT]/includes/functions.php on line 4811: Cannot modify header information - headers already sent by (output started at [ROOT]/includes/functions.php:3904)
DAVID-Laserscanner Forum • View topic - FULL SIZE car scanning
Dear DAVID Community,

As you are probably aware, the entire DAVID company, team and product range has been integrated into HP Inc.
This forum is now read-only. Relevant content has been migrated to HP and merged into HP's Support Forums on November 1, 2016.

To start new discussions for 3D Scanning, please register and post your new topic at the HP Support Forums

FULL SIZE car scanning

Questions, problems, comments and tips regarding the 3d scanning process.

FULL SIZE car scanning

Postby cnc Dave » Wed Mar 10, 2010 3:34 pm

Hello all!

It has taken a long time to achieve my goal with DAVID and I must thank all that have helped including all the forum regulars, Hamilton (David reseller in Ireland) for his huge help getting smooth scanning and Sven. I have finally scanned a full size car.....

Image

Image

Image

Image

Image

It took 5 hours in the dark at 0 degrees C to get this result. I could have kept going and done the roof, but my purpose for doing this is so I can build a body styling kit for the car in a CAD program and CNC out the new parts. I scanned the areas I need.

The above scan is 130Mb and my Intel duel core, over clocked to 3.66Mhz, 4Gb of RAM and gaming graphics card, PC could only just cope with the files. Indeed merging the scans was a very slow process. This is full size car data. My CAD program, and indeed Windows XP can only utilize 3GB of RAM so I will have to break this down so I can use it, but I just had to see it all together :0)

Regards Dave
User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Re: FULL SIZE car scanning

Postby Bongobat » Wed Mar 10, 2010 4:03 pm

Hi Dave,

WOW :shock: :shock: :shock:

Great work!

Could you please post lots of details of your scanning rig. It looks like you used red laser not green is this correct? What was the wattage? What camera did you use?

Greg
DealExtreme red line laser, Microsoft Lifecam HD-5000
User avatar
Bongobat
Moderator
 
Posts: 1002
Joined: Mon Apr 02, 2007 10:02 am
Location: Ohio, USA

Re: FULL SIZE car scanning

Postby cnc Dave » Wed Mar 10, 2010 4:53 pm

Hi Greg,

Sure it's a red 16mw focusable laser from the DAVID shop.
Camera USB CCD black and white from the DAVID shop
Gearbox... planetary 256:1 ratio
I machined the mounting parts myself.
Ardunio board and Easy Stepper board to control the 0.8 degree /step NEMA 17 stepper
Elastic band borrowed from my father to take out any backlash in the gearbox.
DAVID 2.5.3

I got the new calibration pattern printed on white Vinyl almost 1 metre square and stuck it to glass panels for my reference scan.

I aborted the sideways scanning with the 2 tripods, it was shaking in the breeze. I ended up with the more conventional one tripod set up.

My stepper control box has 2 buttons..'scan' and 'reset'. Slow scan and fast reset to original possition.

The laser is turned on with a micro switch mounted to the gearbox.

Regards Dave
User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Postby hal » Wed Mar 10, 2010 10:54 pm

:shock: Wonderfull: you have done it! :shock:

My compliment, Dave. You are the first here that demostrate how David is versatile. :D
WlaterMo found the way with his outdoor scans, and you, now are the first to cross the finishing line.

Looking at your great results, I'm more inspired to scan my car (unfortunately I've so few spare time). You encourage me.

Please, if you can and want: can you post more pictures of the scans, the alignment process and of the final result (some cool renderings)?
I think that your, could be one of the best examples of David capabilities.

Compliments again and again,
Best regards,
Mattia
User avatar
hal
Moderator
 
Posts: 1527
Joined: Thu Mar 01, 2007 4:08 pm
Location: Cavaria con Premezzo (VA), Italy.

Re: FULL SIZE car scanning

Postby Marko » Wed Mar 10, 2010 10:59 pm

bloody briliant work,

I was planing of doing the same with my Triumph TR7 to help out with modifications (especially suspension mounts). it would be great if the bodyshell could be on the rotisserie that way you coud scan it all way around.
that picture is just encouragement to continue with my work
Marko
 
Posts: 15
Joined: Fri May 15, 2009 5:32 pm

Re: FULL SIZE car scanning

Postby cnc Dave » Thu Mar 11, 2010 8:56 pm

Thanks guys,

I'm glad to have inspired you.

Scanning big objects has raised some questions though... have a look at this and it will give you some clue..

Image

This is a face we all know....


Image

This is the face next to a car scan!

My computor..

intel duel core
366Mhz
4Gb RAM
ATI 512 Mb graphics card

When picking the points for a manual merge it could take 30 seconds for DAVID to acknowledge that you had clicked on a point on the scan.

When I tried to fuse the scans, anything above 400 res and I got the error message ‘Windows has run out of memory’.
Windows XP can only use 3 GB of RAM. RhinoCAD can only use 2GB of RAM no matter how much you have got.

How much RAM can DAVID use?

How many processors can DAVID use?

The scan is not fused. It is simply saved as one .OBJ file, it was the only way to preserve detail. RhinoCAD can not open the full, raw scan… I have to reduce the mesh to 32%. To really play with huge scans you would need one seriously fast processor running 64 bit Windows 7 PRO and 8 GB of RAM…. One very expensive PC.

Many, many moons ago, I installed Photoshop, and I can’t quite remember the detail, but you had to allocate ‘virtual memory’ for the program because of the huge rendering processes and saves, so you could ‘undo’.

Is there any way of allocating memory to a program?

Mattia... I recall you saying that you would scan a car with many small, hi res scans.... I think you would get very frustrated with DAVID crashing if you did it that way. I was scanning a square metre at a time and my computer only just coped with merging...

Your the ACE at rendering Mattia, I don't have the software for it, but I'll post some pics of the newly designed Jag when it's done :D

Regards Dave
User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Re: FULL SIZE car scanning

Postby Bongobat » Thu Mar 11, 2010 9:31 pm

DealExtreme red line laser, Microsoft Lifecam HD-5000
User avatar
Bongobat
Moderator
 
Posts: 1002
Joined: Mon Apr 02, 2007 10:02 am
Location: Ohio, USA

Re: FULL SIZE car scanning

Postby Ben4096 » Thu Mar 11, 2010 9:52 pm

I'm very impressed.
It's great and inspiring work, thank you !
About the memory limit I think you prooved it's time for 64bit David ...

ben
http://paranoidpuppets.com/
Ben4096
 
Posts: 53
Joined: Tue Sep 29, 2009 12:42 am
Location: Paris / France

Re: FULL SIZE car scanning

Postby cnc Dave » Fri Mar 12, 2010 2:15 am

Hi Greg,

Once again I'm going to have to give this one some thought to get my head round it... it's not clear yet.

OK, you take a photo of a salt shaker and a space shuttle with the same camera. You could print out a full size picture of the saltshaker on A4, no problem. But could you print a 'full size' picture of the space shuttle ?

I want to CNC machine full sized parts to fit this car, the scan I have is... hopefully, pretty much dimentionaly correct. When I model a new bumper on the car and click 'print', I want a full sized bumper... a hi res, full size bumper (fender).

If you can scan your model car at the same res I scanned the full size car and blow your model car up to full size, yet maintain all the detail... well you could have saved me a lot of work.

So, is it that you are saying, the reason my relatively fast computor, can not cope with my scan, is because I've scanned it at too high a resolution, not because it's huge?

It's the same res as the face... it's just massive compared to it.

I need to sleep on this one. I'm a bit slow sometimes but I get there in the end :D
Regards Dave


Ps, I do know that I left the scan of the floor in, so when I design the new bumper... I know exactly how close to the ground it is.
User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Re: FULL SIZE car scanning

Postby Bongobat » Fri Mar 12, 2010 3:28 am

DealExtreme red line laser, Microsoft Lifecam HD-5000
User avatar
Bongobat
Moderator
 
Posts: 1002
Joined: Mon Apr 02, 2007 10:02 am
Location: Ohio, USA

Re: FULL SIZE car scanning

Postby cnc Dave » Fri Mar 12, 2010 3:15 pm

User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Re: FULL SIZE car scanning

Postby MagWeb » Fri Mar 12, 2010 3:57 pm

MagWeb
Moderator
 
Posts: 2499
Joined: Wed Jul 18, 2007 8:48 pm

Re: FULL SIZE car scanning

Postby cnc Dave » Fri Mar 12, 2010 5:07 pm

Thanks Magweb,

I first tried Meshlabs, hoping it could convert to a NURBs file, as it can't, I binned it and dismissed it. I shall download it again, that sounds like a great function.

I've been trying in Rhino to draw lines on the mesh and create a surfce between them but it crashes at the last second... it can preview it, but not do it, which is so frustrating. I am trying to do a whole bumper at once, I'll try smaller parts and fuse them....

My new friend Eric has offered to convert the whole file to NURBs with Geomagic. There's so many scrummy programs out there I wish I could afford them all... and had the time to learn them :D

Regards Dave
User avatar
cnc Dave
 
Posts: 193
Joined: Sat Mar 14, 2009 5:50 pm
Location: UK

Re: FULL SIZE car scanning

Postby Bongobat » Fri Mar 12, 2010 6:10 pm

DealExtreme red line laser, Microsoft Lifecam HD-5000
User avatar
Bongobat
Moderator
 
Posts: 1002
Joined: Mon Apr 02, 2007 10:02 am
Location: Ohio, USA

Re: FULL SIZE car scanning

Postby leo » Fri Mar 12, 2010 8:22 pm

Hi Dave,

Impressive results!! thank for sharing.

If you use _RebuildCrvNonUniform command in rhino then you will get simpler curves and will be easier to build surface with these curves.
Have you tried to divide the mesh in meshlab ? then will be easier to work in Rhino, Also i like the Decimation in mesh lab.

Leo
Attachments
ml.jpg
leo
 
Posts: 48
Joined: Fri Feb 09, 2007 11:50 pm
Location: Sweden

Next

Return to 3D Laser Scanning

Who is online

Users browsing this forum: No registered users and 0 guests