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CvInvokeHoughLines Method
http://www.emgu.com
Finds lines in a binary image using the standard Hough transform.

Namespace: Emgu.CV
Assembly: Emgu.CV.World (in Emgu.CV.World.dll) Version: 3.1.0.2282 (3.1.0.2282)
Syntax
public static void HoughLines(
	IInputArray image,
	IOutputArray lines,
	double rho,
	double theta,
	int threshold,
	double srn = 0,
	double stn = 0
)

Parameters

image
Type: Emgu.CVIInputArray
8-bit, single-channel binary source image. The image may be modified by the function.
lines
Type: Emgu.CVIOutputArray
Output vector of lines. Each line is represented by a two-element vector
rho
Type: SystemDouble
Distance resolution of the accumulator in pixels.
theta
Type: SystemDouble
Angle resolution of the accumulator in radians.
threshold
Type: SystemInt32
Accumulator threshold parameter. Only those lines are returned that get enough votes (> threshold)
srn (Optional)
Type: SystemDouble
For the multi-scale Hough transform, it is a divisor for the distance resolution rho . The coarse accumulator distance resolution is rho and the accurate accumulator resolution is rho/srn . If both srn=0 and stn=0 , the classical Hough transform is used. Otherwise, both these parameters should be positive.
stn (Optional)
Type: SystemDouble
For the multi-scale Hough transform, it is a divisor for the distance resolution theta
See Also