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CvInvokeCalibrationMatrixValues Method
http://www.emgu.com
Computes various useful camera (sensor/lens) characteristics using the computed camera calibration matrix, image frame resolution in pixels and the physical aperture size

Namespace: Emgu.CV
Assembly: Emgu.CV.World (in Emgu.CV.World.dll) Version: 3.1.0.2282 (3.1.0.2282)
Syntax
public static void CalibrationMatrixValues(
	IInputArray cameraMatrix,
	Size imageSize,
	double apertureWidth,
	double apertureHeight,
	ref double fovx,
	ref double fovy,
	ref double focalLength,
	ref MCvPoint2D64f principalPoint,
	ref double aspectRatio
)

Parameters

cameraMatrix
Type: Emgu.CVIInputArray
The matrix of intrinsic parameters
imageSize
Type: System.DrawingSize
Image size in pixels
apertureWidth
Type: SystemDouble
Aperture width in real-world units (optional input parameter). Set it to 0 if not used
apertureHeight
Type: SystemDouble
Aperture width in real-world units (optional input parameter). Set it to 0 if not used
fovx
Type: SystemDouble
Field of view angle in x direction in degrees
fovy
Type: SystemDouble
Field of view angle in y direction in degrees
focalLength
Type: SystemDouble
Focal length in real-world units
principalPoint
Type: Emgu.CV.StructureMCvPoint2D64f
The principal point in real-world units
aspectRatio
Type: SystemDouble
The pixel aspect ratio ~ fy/f
See Also