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Cv2.SolvePnPRansac Method (IEnumerable<Point3f> , IEnumerable<Point2f> ,Double[,], IEnumerable<Double> ,Double[],Double[],Int32[], Boolean, Int32, Single, Double, SolvePnPFlags)

computes the camera pose from a few 3D points and the corresponding projections. The outliers are possible.

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 3.4.1.20180605-33-CaRLSharp
Syntax
public static void SolvePnPRansac(
	IEnumerable<Point3f> objectPoints,
	IEnumerable<Point2f> imagePoints,
	double[,] cameraMatrix,
	IEnumerable<double> distCoeffs,
	out double[] rvec,
	out double[] tvec,
	out int[] inliers,
	bool useExtrinsicGuess = false,
	int iterationsCount = 100,
	float reprojectionError = 8f,
	double confidence = 0.99,
	SolvePnPFlags flags = SolvePnPFlags.Iterative
)

Parameters

objectPoints
Type: System.Collections.Generic.IEnumerable<Point3f>
Array of object points in the object coordinate space, 3xN/Nx3 1-channel or 1xN/Nx1 3-channel, where N is the number of points. List<Point3f> can be also passed here.
imagePoints
Type: System.Collections.Generic.IEnumerable<Point2f>
Array of corresponding image points, 2xN/Nx2 1-channel or 1xN/Nx1 2-channel, where N is the number of points. List<Point2f> can be also passed here.
cameraMatrix
Type:System.Double[,]
Input 3x3 camera matrix
distCoeffs
Type: System.Collections.Generic.IEnumerable<Double>
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.
rvec
Type:System.Double[]
Output rotation vector that, together with tvec , brings points from the model coordinate system to the camera coordinate system.
tvec
Type:System.Double[]
Output translation vector.
inliers
Type:System.Int32[]
Output vector that contains indices of inliers in objectPoints and imagePoints .
useExtrinsicGuess (Optional)
Type: System.Boolean
If true, the function uses the provided rvec and tvec values as initial approximations of the rotation and translation vectors, respectively, and further optimizes them.
iterationsCount (Optional)
Type: System.Int32
Number of iterations.
reprojectionError (Optional)
Type: System.Single
Inlier threshold value used by the RANSAC procedure. The parameter value is the maximum allowed distance between the observed and computed point projections to consider it an inlier.
confidence (Optional)
Type: System.Double
The probability that the algorithm produces a useful result.
flags (Optional)
Type: OpenCvSharp.SolvePnPFlags
Method for solving a PnP problem
See Also