Emgu CV Library Documentation
cvConvexHull2 Method (input, hullStorage, orientation, returnPoints)
NamespacesEmgu.CVCvInvokecvConvexHull2(IntPtr, IntPtr, ORIENTATION, Int32)

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The function cvConvexHull2 finds convex hull of 2D point set using Sklansky's algorithm.
Declaration Syntax
C#Visual BasicVisual C++
public static IntPtr cvConvexHull2(
	IntPtr input,
	IntPtr hullStorage,
	ORIENTATION orientation,
	int returnPoints
)
Public Shared Function cvConvexHull2 ( _
	input As IntPtr, _
	hullStorage As IntPtr, _
	orientation As ORIENTATION, _
	returnPoints As Integer _
) As IntPtr
public:
static IntPtr cvConvexHull2(
	IntPtr input, 
	IntPtr hullStorage, 
	ORIENTATION orientation, 
	int returnPoints
)
Parameters
input (IntPtr)
Sequence or array of 2D points with 32-bit integer or floating-point coordinates
hullStorage (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 (ORIENTATION)
Desired orientation of convex hull: CV_CLOCKWISE or CV_COUNTER_CLOCKWISE
returnPoints (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

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.3.0.0 (1.3.0.0)