Newest 3D scan with material render

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

Re: Newest 3D scan with material render

Postby cooltech » Sat Dec 11, 2010 4:49 am

try out octanerender... theres a demo and the full version is not pricey... the mixing and node texture system is just easy to use. Ideal for complex and fast renders... (you will need at least a nvidia gtx 260 with CUDA 3 drivers installed, they will come with the latest drivers anyways)
Canon 7d
canon 100mm macro lens
tokina 11-16mm wide lens
canon 100-400 mm prime zoom lens with x 2 extender
canon 50mm 1.4F lens
30mw green line laser module
1mw mitre saw red laser
Merlin automated pano head
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Postby hal » Sat Dec 11, 2010 11:21 am

@ cooltech:
is hard to scan black objects. Many of "pro" 3D scanners have problems to work on black and shiny surfaces. I know that the scanners that works with Structured Light see a little better the projected patterns on black surfaces (in comparison with scanners that works with low power lasers, like David). Maybe the new David 3, with the structured light implemented, could work better on dark objects.
But, please, forget to scan a black velvet surface! :D Coating will be a must for the best precision.

Regards,
Mattia
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Re: Newest 3D scan with material render

Postby milz » Sat Dec 11, 2010 12:14 pm

hi
cooltech wrote:can you try a black object :0) ive noticed lots of the scanned models are white... other colours would be interesting to see any more or less artifacts

see here viewtopic.php?f=2&t=2133#p13112
the terracotta soldier is brown near black.

viewtopic.php?f=6&t=2450
for this scans i used interpolation 1 cause i had some holes in the dark parts

i think the problem is not a black object. you can setup you settings to scan this.
But different colors for example the bird : brown/black yellow/red
when i use setting for black / brown i got much noise at the postions where
the object is yellow cause much more light will be reflected here btw black/brown absorbs more light.

mono colored object (white to black) without much glossy/shiny can be scanned with my setup.
multicolored glossy objects are difficault.

mfg milz
Xeon x5650@4ghz
Cam : USB2 CCD 1024x768 / USB3 1280x900
Laser : LC532-5-3-F(16x65) Focusable Green
Projector Acer X110P / Acer K132
dControl one David control box + Turntable + automatic texture lights
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Re: Newest 3D scan with material render

Postby cooltech » Sun Dec 12, 2010 3:26 am

How do you map higher res textures... The only way ive done it is to make a 1920x1080 video from the 7d. Then double it up and encode it to 3840x 2160 (calibration and scanning video resolution). Then add a photo to the end of the scanning video of the object (5133 x 3456) rescaled to fit the video then use grab... Only way I can see DS being able to do it. Even at 1920x1080p the rescaled image is far sharper than the actual video file. Otherwise how do you map the texutre to such a complex object... any ideas
Canon 7d
canon 100mm macro lens
tokina 11-16mm wide lens
canon 100-400 mm prime zoom lens with x 2 extender
canon 50mm 1.4F lens
30mw green line laser module
1mw mitre saw red laser
Merlin automated pano head
2 tripods
cooltech
 
Posts: 36
Joined: Mon Dec 06, 2010 7:33 pm

Re: Newest 3D scan with material render

Postby milz » Thu Jan 27, 2011 12:12 am

new scan of a very colorfull and complex statue
the head is made of "Fimo"
the body is cotton and 3 wooden legs.
26 planess scans

fimo-black001.jpg


mfg milz
Xeon x5650@4ghz
Cam : USB2 CCD 1024x768 / USB3 1280x900
Laser : LC532-5-3-F(16x65) Focusable Green
Projector Acer X110P / Acer K132
dControl one David control box + Turntable + automatic texture lights
mooooom bathroom!!!!!!
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Re: Newest 3D scan with material render

Postby NoHumorMan » Mon Jan 31, 2011 6:26 pm

I'm very impressed with your scanning. Well done! :mrgreen:
logitech quickcam pro 9000
aixiz_lasers green line laser
Egg-timer for laser movement - works GREAT for 800x600 resolution
2x100cmx100cm wooden boards, painted white, to form backing for calibration panel.
Windows XP Pro
LOTS OF PATIENCE! .)
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