Finds perspective transformation H=||hij|| between the source and the destination planes

Namespace: Emgu.CV
Assembly: Emgu.CV (in Emgu.CV.dll) Version: 2.2.1.1150 (2.2.1.1150)

Syntax


	C#			Visual Basic			Visual C++

public static int cvFindHomography(
	IntPtr srcPoints,
	IntPtr dstPoints,
	IntPtr homography,
	HOMOGRAPHY_METHOD method,
	double ransacReprojThreshold,
	IntPtr mask
)

Public Shared Function cvFindHomography ( _
	srcPoints As IntPtr, _
	dstPoints As IntPtr, _
	homography As IntPtr, _
	method As HOMOGRAPHY_METHOD, _
	ransacReprojThreshold As Double, _
	mask As IntPtr _
) As Integer

public:
static int cvFindHomography(
	IntPtr srcPoints, 
	IntPtr dstPoints, 
	IntPtr homography, 
	HOMOGRAPHY_METHOD method, 
	double ransacReprojThreshold, 
	IntPtr mask
)

Parameters

srcPoints: IntPtr
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: IntPtr
Point coordinates in the destination plane, 2xN, Nx2, 3xN or Nx3 array (the latter two are for representation in homogeneous coordinates)

homography: IntPtr
Output 3x3 homography matrix. Homography matrix is determined up to a scale, thus it is normalized to make h33=1

method: HOMOGRAPHY_METHOD
The type of the 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

mask: IntPtr
The optional output mask set by a robust method (RANSAC or LMEDS).

Return Value

1 if the homography matrix is found, 0 otherwise.

See Also

Emgu.CV Namespace