MICROFORUM

There are four main algorithms. There have been too many contributions on fingerprint recognition. I only suggest reading the work "Fingeprint Recognition" by Francesco Turoni.

yoshi, check this on wikipedia: https://en.wikipedia.org/wiki/Composite_B%C3%A9zier_curve Now, assume the control points of Eight-segment quadratic polybezier have different "Z"-coordinates. This results in flat curved circle. The question is, how to calculate the perimeter and area from e...