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MatConvexHullIndices Method

Computes convex hull for a set of 2D points.

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 3.4.1.20180605-33-CaRLSharp
Syntax
public int[] ConvexHullIndices(
	InputArray points,
	bool clockwise = false
)

Parameters

points
Type: OpenCvSharpInputArray
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.

Return Value

Type: Int32
The output convex hull. It is 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