Photogrammetry : ok for organics, bad for mechanics

[phunguss]

I have a little turntable that I can program the speed on to take photos for photogrammetry. Programmed with an arduino to run a stepper motor, I originally built it for use with my Creality Scan Ferret 3D scanner.

The software for the scanner works best on windows, and I rearranged my office and don't have everything setup yet. This is a scan done with the Creality software in the past.

I tried photgrammetry instead of the 3D scanner. Meh results. I have a multi-card reader and I want a white faceplace instead of black. Painting would have been easier.

Round and round, took 52 photos.... let AliceVision Meshroom run for about 8 hours to plot this mess:

Then I spent about 4 hours just measuring and manually creating it in 3D instead.

Better result by doing it manually.

My faceplate results

But why do I want it in white? For a Mini eMac I am 3D printing. Notches in the bottom of the faceplate are for the spring loaded door.

I got the idea from a light switch.

 

[mmu_man]

Sadly yeah you still need to model mechanical things for accurate reproduction… Nice result!

 

[Towmater]

Spray it with foot powder talc, then “flick” cinnamon onto it to create the stochastic noise texture that photogrammetry requires. Tough scanning calls for tough actin’... Tinactin.

 

[phunguss]

Spray it with foot powder talc, then “flick” cinnamon onto it to create the stochastic noise texture that photogrammetry requires. Tough scanning calls for tough actin’... Tinactin.

I tried the foot powder with a puck mouse disassembled and it still came out horrible (all parts attached to a tube to get the best angles).

But it was a good base I could take into 3D modeller and use it as a background to rebuild it with modelling tools.

Next time, I will try the cinnamon specs! After the manual rebuild, I could convert my Bondi puck to Strawberry and build a miniature.