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Use the specific method to find perspective transformation H=||h_ij|| between the source and the destination planes

Namespace: Emgu.CV
Assembly: Emgu.CV (in Emgu.CV.dll) Version: 2.4.2.1777 (2.4.2.1777)

Syntax

C#
public static HomographyMatrix FindHomography(
	Matrix<float> srcPoints,
	Matrix<float> dstPoints,
	HOMOGRAPHY_METHOD method,
	double ransacReprojThreshold
)
Visual Basic
Public Shared Function FindHomography ( _
	srcPoints As Matrix(Of Single), _
	dstPoints As Matrix(Of Single), _
	method As HOMOGRAPHY_METHOD, _
	ransacReprojThreshold As Double _
) As HomographyMatrix
Visual C++
public:
static HomographyMatrix^ FindHomography(
	Matrix<float>^ srcPoints, 
	Matrix<float>^ dstPoints, 
	HOMOGRAPHY_METHOD method, 
	double ransacReprojThreshold
)

Parameters

srcPoints
Type: Emgu.CV..::..Matrix<(Of <(<'Single>)>)>
Point coordinates in the original plane, 2xN, Nx2, 3xN or Nx3 array (the latter two are for representation in homogeneous coordinates), where N is the number of points
dstPoints
Type: Emgu.CV..::..Matrix<(Of <(<'Single>)>)>
Point coordinates in the destination plane, 2xN, Nx2, 3xN or Nx3 array (the latter two are for representation in homogeneous coordinates)
method
Type: Emgu.CV.CvEnum..::..HOMOGRAPHY_METHOD
FindHomography method
ransacReprojThreshold
Type: System..::..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 if found. Null if not found.

See Also