Emgu CV Library Documentation
FindHomography Method (srcPoints, dstPoints, method, ransacReprojThreshold)
NamespacesEmgu.CVCameraCalibrationFindHomography(array<Point2D<(Of <(Single>)>)>[]()[], array<Point2D<(Of <(Single>)>)>[]()[], HOMOGRAPHY_METHOD, Double)

www.emgu.com/wiki
Finds perspective transformation H=||h_ij|| between the source and the destination planes
Declaration Syntax
C#Visual BasicVisual C++
public static Matrix<float> FindHomography(
	Point2D<float>[] srcPoints,
	Point2D<float>[] dstPoints,
	HOMOGRAPHY_METHOD method,
	double ransacReprojThreshold
)
Public Shared Function FindHomography ( _
	srcPoints As Point2D(Of Single)(), _
	dstPoints As Point2D(Of Single)(), _
	method As HOMOGRAPHY_METHOD, _
	ransacReprojThreshold As Double _
) As Matrix(Of Single)
public:
static Matrix<float>^ FindHomography(
	array<Point2D<float>^>^ srcPoints, 
	array<Point2D<float>^>^ dstPoints, 
	HOMOGRAPHY_METHOD method, 
	double ransacReprojThreshold
)
Parameters
srcPoints (array< Point2D<(Of <(Single>)>) >[]()[])
Point coordinates in the original plane
dstPoints (array< Point2D<(Of <(Single>)>) >[]()[])
Point coordinates in the destination plane
method (HOMOGRAPHY_METHOD)
FindHomography method
ransacReprojThreshold (Double)
The maximum allowed reprojection error to treat a point pair as an inlier. The parameter is only used in RANSAC-based homography estimation. E.g. if dst_points coordinates are measured in pixels with pixel-accurate precision, it makes sense to set this parameter somewhere in the range ~1..3
Return Value
The 3x3 homography matrix.

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.4.3249.6313 (1.4.0.0)