Computes convex hull for a set of 2D points.
Namespace: OpenCvSharp.CPlusPlus
Assembly: OpenCvSharp.CPlusPlus (in OpenCvSharp.CPlusPlus.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
public Mat ConvexHull( InputArray points, bool clockwise = false, bool returnPoints = true )
Parameters
- points
- Type: OpenCvSharp.CPlusPlusInputArray
The input 2D point set, represented by CV_32SC2 or CV_32FC2 matrix - clockwise (Optional)
- Type: SystemBoolean
If true, the output convex hull will be oriented clockwise, otherwise it will be oriented counter-clockwise. Here, the usual screen coordinate system is assumed - the origin is at the top-left corner, x axis is oriented to the right, and y axis is oriented downwards. - returnPoints (Optional)
- Type: SystemBoolean
[Missing <param name="returnPoints"/> documentation for "M:OpenCvSharp.CPlusPlus.Mat.ConvexHull(OpenCvSharp.CPlusPlus.InputArray,System.Boolean,System.Boolean)"]
Return Value
Type: MatThe output convex hull. It is either a vector of points that form the hull (must have the same type as the input points), or a vector of 0-based point indices of the hull points in the original array (since the set of convex hull points is a subset of the original point set).
See Also