Emgu CV Library Documentation
FindNearestPoint2D Method (point)
NamespacesEmgu.CVPlanarSubdivisionFindNearestPoint2D(PointF%)

www.emgu.com/wiki
Finds subdivision vertex that is the closest to the input point. It is not necessarily one of vertices of the facet containing the input point, though the facet (located using cvSubdiv2DLocate) is used as a starting point.
Declaration Syntax
C#Visual BasicVisual C++
public MCvSubdiv2DPoint FindNearestPoint2D(
	ref PointF point
)
Public Function FindNearestPoint2D ( _
	ByRef point As PointF _
) As MCvSubdiv2DPoint
public:
MCvSubdiv2DPoint FindNearestPoint2D(
	PointF% point
)
Parameters
point ( PointF %)
Input point
Return Value
returns the found subdivision vertex

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.5.0.0 (1.5.0.0)