Playground polyhedra - iPhone 3d scan - analysisYour model is disabled. For more details go to Edit properties3D Model
Spatial analysis of one of my recent iPhone scans. Out of sheer curiosity I wanted to find out how much the scanned object deviates from the “ideal” form created from three platonic solids.
Of course this approach has many flaws (for example I don’t correct for the inaccuracies of the actual structure, step 4 removes too much geometry etc. etc. ) but still, it was a fun excercise and I’ve learned a couple new things.
Steps shown in timeframe animation:
1. Original scan
2. Extracted main shapes only
3. Reference geometry (3 ideal dodecahedrons)
4. Segmented model using RANSAC (I wanted just the planar parts to be taken into account, so the extruding climbing grips were automatically removed in this step)
5. Heat map of distances from reference geometry
Result: If my calculations are correct, 90% of the tested points were no more than an inch apart from the reference model. Not bad, not bad at all.