Emgu CV Library Documentation
Canny Method (thresh, threshLinking)
NamespacesEmgu.CVImage<(Of <(TColor, TDepth>)>)Canny(TColor, TColor)

www.emgu.com/wiki
Find the edges on this image and marked them in the returned image.
Declaration Syntax
C#Visual BasicVisual C++
public Image<TColor, TDepth> Canny(
	TColor thresh,
	TColor threshLinking
)
Public Function Canny ( _
	thresh As TColor, _
	threshLinking As TColor _
) As Image(Of TColor, TDepth)
public:
Image<TColor, TDepth>^ Canny(
	TColor thresh, 
	TColor threshLinking
)
Parameters
thresh (TColor)
The threshhold to find initial segments of strong edges
threshLinking (TColor)
The threshold used for edge Linking
Return Value
The edges found by the Canny edge detector

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