Complete capture of deep cavities and thin walls

What makes it hard

A skull is geometric complexity at its extreme: orbits and nasal cavity are deep recesses, the zygomatic arch and nasal bone thin to almost a blade edge, and the overall shape causes heavy self-occlusion.

For a line-of-sight sensor, deep cavities mean light goes in and struggles to come out, leaving a weak return; thin edges produce “flying pixels” — false points suspended between foreground and background. Bone is also translucent, so light scatters below the surface before returning, blurring the depth decision.

What we measured

2,272,452 raw points, the largest of these captures. Structure inside the orbits, the thin edge of the zygomatic arch and the detail of the teeth all survive.

Statistical outlier and small-cluster removal dropped about 5%, mostly flying pixels along thin edges. That proportion is itself a statement about how hard thin edges are.

Related

Below the surface · LUC-INSIGHT™