cvFindHomography Method (srcPoints, dstPoints, homography, method, ransacReprojThreshold, mask)

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

Declaration Syntax

Visual Basic

Visual C++

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

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

public:
static void 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 homogenious 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 homogenious 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).

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.5.0.0 (1.5.0.0)