Automated surface capturing process

Development Asset Creation
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1

Hi there,

I’m slowly getting into photogrammetry which I’m planing to use for smaller automotive parts. As my first project, I would like to scan multiple motorcycle parts. All somewhere around 30mm to 1000mm.

Since I have about 50 parts, I would like to automate the “taking pictures” part a bit. (still an engineer by heart)

Similar to that: https://www.youtube.com/watch?v=CBpZtnu1Mig&t=19s

 

I was wondering what’s the ideal scenario for taking pictures.

  • Camera on fixed position with a turning object or fixed object with a rotating camera? Also if the object turns, I assume it would be better to shoot it in front of a green wall and remove the green background in photoshop!? But wouldn’t it loose some reference data from it’s surrounding?

-Scanning 360deg: All parts need to be fully scanned from all sides. I’m thinking about sticking some marking points on the object to reference top and bottom to the sides. Would you see any issues with merging the bottom scan with the top scan?

  • Light: should the light move with the camera or should I have multiple static lights around the scanning area? 

-Any other ideas, concerns, or examples would be greatly appreciated :slight_smile:

 

Thanks,

Tom

2

Hi Tom,

just some comments from a hobbyist:

Moving the Camera is from my point of view the better option however a turntable is much simpler to realize. And you are right:  when you are moving the object instead of the cam you wat to get as little details from the background as possible. Greenscreen is one way - adjusting the f-stop in a way that only the object is sharp is pretty helpfull as well,

If the parts are shiny you might want to get an anti-glossy spray.

The lights shouldnt move with the cam - best szenario is a very diffuse light that doesnt cast any shadows.

Hope this helps a bit,

 

Good luck !

Heiko

3

Look at Foldio360.
Lightbox + Auto turntable, make photos by IR each turn.
Can rotate 24,36,48 times.