Edges and lines

Contour finding

Contour finding

Convex Hull

Convex Hull

Canny edge detector

Canny edge detector

Marching Cubes

Marching Cubes

Ridge operators

Ridge operators

Active Contour Model

Active Contour Model

Shapes

Shapes

Random Shapes

Random Shapes

Approximate and subdivide polygons

Approximate and subdivide polygons

Straight line Hough transform

Straight line Hough transform

Circular and Elliptical Hough Transforms

Circular and Elliptical Hough Transforms

Skeletonize

Skeletonize

Edge operators

Edge operators