The function cvConvexHull2 finds convex hull of 2D point set using Sklansky's algorithm.

Namespace:  Emgu.CV
Assembly:  Emgu.CV (in Emgu.CV.dll) Version: 2.0.1.0 (2.0.1.0)

Syntax

C#
public static IntPtr cvConvexHull2(
	IntPtr input,
	IntPtr hullStorage,
	ORIENTATION orientation,
	int returnPoints
)
Visual Basic (Declaration)
Public Shared Function cvConvexHull2 ( _
	input As IntPtr, _
	hullStorage As IntPtr, _
	orientation As ORIENTATION, _
	returnPoints As Integer _
) As IntPtr
Visual C++
public:
static IntPtr cvConvexHull2(
	IntPtr input, 
	IntPtr hullStorage, 
	ORIENTATION orientation, 
	int returnPoints
)

Parameters

input
Type: System..::.IntPtr
Sequence or array of 2D points with 32-bit integer or floating-point coordinates
hullStorage
Type: System..::.IntPtr
The destination array (CvMat*) or memory storage (CvMemStorage*) that will store the convex hull. If it is array, it should be 1d and have the same number of elements as the input array/sequence. On output the header is modified so to truncate the array downto the hull size
orientation
Type: Emgu.CV.CvEnum..::.ORIENTATION
Desired orientation of convex hull: CV_CLOCKWISE or CV_COUNTER_CLOCKWISE
returnPoints
Type: System..::.Int32
If non-zero, the points themselves will be stored in the hull instead of indices if hull_storage is array, or pointers if hull_storage is memory storage

Return Value

If hull_storage is memory storage, the function creates a sequence containing the hull points or pointers to them, depending on return_points value and returns the sequence on output

See Also