CvArrCanny Method (CvArr, Double, Double, ApertureSize) OpenCvSharp Class Library
Finds the edges on the input image image and marks them in the output image edges using the Canny algorithm. The smallest of threshold1 and threshold2 is used for edge linking, the largest - to find initial segments of strong edges.

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax

public void Canny(
	CvArr edges,
	double threshold1,
	double threshold2,
	ApertureSize apertureSize
)

Parameters

edges
Type: OpenCvSharpCvArr
Image to store the edges found by the function.
threshold1
Type: SystemDouble
The first threshold.
threshold2
Type: SystemDouble
The second threshold.
apertureSize
Type: OpenCvSharpApertureSize
Aperture parameter for Sobel operator.
See Also

Reference