A fun little test setup that uses three (cheap) webcams and a (static) line projector, to measure the outline and curvatures of a human fingernail. Resulting in an Bézier curves based 3D model, that approximates the subjects fingernail.
![](https://home.okmer.com/wp-content/uploads/2018/04/IMAG0190-2-719x1024.jpg)
![](https://home.okmer.com/wp-content/uploads/2012/09/IMAG0004-1024x577.jpg)
A small volume is calibrated for all three cameras (using a simple calibration cube). Making it relatively easy to measure and reconstruct the outlines and curvature of a fingernail in a distinct color.
The line projector is used to add a high contrast reference on the smooth fingernail surface.
![Proof of concept prototype.](https://home.okmer.com/wp-content/uploads/2012/09/ProofOfConceptProtoTypeGUI-1024x661.png)
The end goal is to get an low data approximation of the fingernail shape, to produce custom (as in perfect fitting) artificial nails.