4 votes
Accepted

Convert NURBS curve into Cubic Bezier Curve

I assume that your cubic spline is non-rational, meaning $w$ = 1, then this is in general true that exact conversion is not possible. NURBS are rational, so you can model conics, say circle whereas ...
Evil's user avatar
  • 9,455
3 votes

Detecting isthmuses on digital curves

Divide the image up into evenly sized grid cells. Have one hash bucket per grid cell, and hash each point on the curve into the grid cell it falls in. Sort all of the elements in each grid cell / ...
D.W.'s user avatar
  • 159k

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