Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsDistance Transformshttp://demonstrations.wolfram.com/DistanceTransforms/]]>http://demonstrations.wolfram.com/DistanceTransforms/Line Angle Histogramhttp://demonstrations.wolfram.com/LineAngleHistogram/]]>http://demonstrations.wolfram.com/LineAngleHistogram/