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Computes projections of 3D points to the image plane given intrinsic and extrinsic camera parameters. Optionally, the function computes jacobians - matrices of partial derivatives of image points as functions of all the input parameters w.r.t. the particular parameters, intrinsic and/or extrinsic. The jacobians are used during the global optimization in cvCalibrateCamera2 and cvFindExtrinsicCameraParams2. The function itself is also used to compute back-projection error for with current intrinsic and extrinsic parameters. Note, that with intrinsic and/or extrinsic parameters set to special values, the function can be used to compute just extrinsic transformation or just intrinsic transformation (i.e. distortion of a sparse set of points).

Namespace: Emgu.CV
Assembly: Emgu.CV (in Emgu.CV.dll) Version: 2.3.0.1416 (2.3.0.1416)

Syntax

C#
public static void cvProjectPoints2( IntPtr objectPoints, IntPtr rotationVector, IntPtr translationVector, IntPtr intrinsicMatrix, IntPtr distortionCoeffs, IntPtr imagePoints, IntPtr dpdrot, IntPtr dpdt, IntPtr dpdf, IntPtr dpdc, IntPtr dpddist, double aspectRatio )

public static void cvProjectPoints2(
	IntPtr objectPoints,
	IntPtr rotationVector,
	IntPtr translationVector,
	IntPtr intrinsicMatrix,
	IntPtr distortionCoeffs,
	IntPtr imagePoints,
	IntPtr dpdrot,
	IntPtr dpdt,
	IntPtr dpdf,
	IntPtr dpdc,
	IntPtr dpddist,
	double aspectRatio
)

Visual Basic
Public Shared Sub cvProjectPoints2 ( _ objectPoints As IntPtr, _ rotationVector As IntPtr, _ translationVector As IntPtr, _ intrinsicMatrix As IntPtr, _ distortionCoeffs As IntPtr, _ imagePoints As IntPtr, _ dpdrot As IntPtr, _ dpdt As IntPtr, _ dpdf As IntPtr, _ dpdc As IntPtr, _ dpddist As IntPtr, _ aspectRatio As Double _ )

Visual Basic

Public Shared Sub cvProjectPoints2 ( _
	objectPoints As IntPtr, _
	rotationVector As IntPtr, _
	translationVector As IntPtr, _
	intrinsicMatrix As IntPtr, _
	distortionCoeffs As IntPtr, _
	imagePoints As IntPtr, _
	dpdrot As IntPtr, _
	dpdt As IntPtr, _
	dpdf As IntPtr, _
	dpdc As IntPtr, _
	dpddist As IntPtr, _
	aspectRatio As Double _
)

Visual C++
public: static void cvProjectPoints2( IntPtr objectPoints, IntPtr rotationVector, IntPtr translationVector, IntPtr intrinsicMatrix, IntPtr distortionCoeffs, IntPtr imagePoints, IntPtr dpdrot, IntPtr dpdt, IntPtr dpdf, IntPtr dpdc, IntPtr dpddist, double aspectRatio )

Visual C++

public:
static void cvProjectPoints2(
	IntPtr objectPoints, 
	IntPtr rotationVector, 
	IntPtr translationVector, 
	IntPtr intrinsicMatrix, 
	IntPtr distortionCoeffs, 
	IntPtr imagePoints, 
	IntPtr dpdrot, 
	IntPtr dpdt, 
	IntPtr dpdf, 
	IntPtr dpdc, 
	IntPtr dpddist, 
	double aspectRatio
)

Parameters

objectPoints: Type: System..::..IntPtr
The array of object points, 3xN or Nx3, where N is the number of points in the view

rotationVector: Type: System..::..IntPtr
The rotation vector, 1x3 or 3x1

translationVector: Type: System..::..IntPtr
The translation vector, 1x3 or 3x1

intrinsicMatrix: Type: System..::..IntPtr
The camera matrix (A) [fx 0 cx; 0 fy cy; 0 0 1].

distortionCoeffs: Type: System..::..IntPtr
The vector of distortion coefficients, 4x1 or 1x4 [k1, k2, p1, p2]. If it is IntPtr.Zero, all distortion coefficients are considered 0's

imagePoints: Type: System..::..IntPtr
The output array of image points, 2xN or Nx2, where N is the total number of points in the view

dpdrot: Type: System..::..IntPtr
Optional Nx3 matrix of derivatives of image points with respect to components of the rotation vector

dpdt: Type: System..::..IntPtr
Optional Nx3 matrix of derivatives of image points w.r.t. components of the translation vector

dpdf: Type: System..::..IntPtr
Optional Nx2 matrix of derivatives of image points w.r.t. fx and fy

dpdc: Type: System..::..IntPtr
Optional Nx2 matrix of derivatives of image points w.r.t. cx and cy

dpddist: Type: System..::..IntPtr
Optional Nx4 matrix of derivatives of image points w.r.t. distortion coefficients

aspectRatio: Type: System..::..Double
Aspect ratio

Syntax

Parameters

See Also