Emgu CV Library Documentation
GetIntrinsicMatrixValues Method (imgWidth, imgHeight, apertureWidth, apertureHeight, fovx, fovy, focalLength, principalPoint, pixelAspectRatio)
NamespacesEmgu.CVIntrinsicCameraParametersGetIntrinsicMatrixValues(Int32, Int32, Double, Double, Double%, Double%, Double%, MCvPoint2D64f%, Double%)

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computes various useful camera (sensor/lens) characteristics using the computed camera calibration matrix, image frame resolution in pixels and the physical aperture size
Declaration Syntax
C#Visual BasicVisual C++
public void GetIntrinsicMatrixValues(
	int imgWidth,
	int imgHeight,
	double apertureWidth,
	double apertureHeight,
	out double fovx,
	out double fovy,
	out double focalLength,
	out MCvPoint2D64f principalPoint,
	out double pixelAspectRatio
)
Public Sub GetIntrinsicMatrixValues ( _
	imgWidth As Integer, _
	imgHeight As Integer, _
	apertureWidth As Double, _
	apertureHeight As Double, _
	<OutAttribute> ByRef fovx As Double, _
	<OutAttribute> ByRef fovy As Double, _
	<OutAttribute> ByRef focalLength As Double, _
	<OutAttribute> ByRef principalPoint As MCvPoint2D64f, _
	<OutAttribute> ByRef pixelAspectRatio As Double _
)
public:
void GetIntrinsicMatrixValues(
	int imgWidth, 
	int imgHeight, 
	double apertureWidth, 
	double apertureHeight, 
	[OutAttribute] double% fovx, 
	[OutAttribute] double% fovy, 
	[OutAttribute] double% focalLength, 
	[OutAttribute] MCvPoint2D64f% principalPoint, 
	[OutAttribute] double% pixelAspectRatio
)
Parameters
imgWidth (Int32)
Image width in pixels
imgHeight (Int32)
Image height in pixels
apertureWidth (Double)
Aperture width in realworld units (optional input parameter). Set it to 0 if not used
apertureHeight (Double)
Aperture width in realworld units (optional input parameter). Set it to 0 if not used
fovx ( Double %)
Field of view angle in x direction in degrees
fovy ( Double %)
Field of view angle in y direction in degrees
focalLength ( Double %)
Focal length in realworld units
principalPoint ( MCvPoint2D64f %)
The principal point in realworld units
pixelAspectRatio ( Double %)
The pixel aspect ratio ~ fy/f

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