Cv2ProjectPoints Method (InputArray, InputArray, InputArray, InputArray, InputArray, OutputArray, OutputArray, Double) OpenCvSharp Class Library
projects points from the model coordinate space to the image coordinates. Also computes derivatives of the image coordinates w.r.t the intrinsic and extrinsic camera parameters

Namespace:  OpenCvSharp.CPlusPlus
Assembly:  OpenCvSharp.CPlusPlus (in OpenCvSharp.CPlusPlus.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax

public static void ProjectPoints(
	InputArray objectPoints,
	InputArray rvec,
	InputArray tvec,
	InputArray cameraMatrix,
	InputArray distCoeffs,
	OutputArray imagePoints,
	OutputArray jacobian = null,
	double aspectRatio = 0
)

Parameters

objectPoints
Type: OpenCvSharp.CPlusPlusInputArray
Array of object points, 3xN/Nx3 1-channel or 1xN/Nx1 3-channel, where N is the number of points in the view.
rvec
Type: OpenCvSharp.CPlusPlusInputArray
Rotation vector (3x1).
tvec
Type: OpenCvSharp.CPlusPlusInputArray
Translation vector (3x1).
cameraMatrix
Type: OpenCvSharp.CPlusPlusInputArray
Camera matrix (3x3)
distCoeffs
Type: OpenCvSharp.CPlusPlusInputArray
Input vector of distortion coefficients (k_1, k_2, p_1, p_2[, k_3[, k_4, k_5, k_6]]) of 4, 5, or 8 elements. If the vector is null, the zero distortion coefficients are assumed.
imagePoints
Type: OpenCvSharp.CPlusPlusOutputArray
Output array of image points, 2xN/Nx2 1-channel or 1xN/Nx1 2-channel
jacobian (Optional)
Type: OpenCvSharp.CPlusPlusOutputArray
Optional output 2Nx(10 + numDistCoeffs) jacobian matrix of derivatives of image points with respect to components of the rotation vector, translation vector, focal lengths, coordinates of the principal point and the distortion coefficients. In the old interface different components of the jacobian are returned via different output parameters.
aspectRatio (Optional)
Type: SystemDouble
Optional “fixed aspect ratio” parameter. If the parameter is not 0, the function assumes that the aspect ratio (fx/fy) is fixed and correspondingly adjusts the jacobian matrix.
See Also

Reference