Method ConvexHullIndices

Computes convex hull for a set of 2D points.

public static int[] ConvexHullIndices(IEnumerable<Point> points, bool clockwise = false)

points IEnumerable<Point>: The input 2D point set, represented by CV_32SC2 or CV_32FC2 matrix
clockwise bool: 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.

int[]: 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).

Computes convex hull for a set of 2D points.

public static int[] ConvexHullIndices(IEnumerable<Point2f> points, bool clockwise = false)

points IEnumerable<Point2f>: The input 2D point set, represented by CV_32SC2 or CV_32FC2 matrix
clockwise bool: 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.

int[]: 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).