Emgu CV Library Documentation
cvGetReal2D Method (arr, idx0, idx1)
NamespacesEmgu.CVCvInvokecvGetReal2D(IntPtr, Int32, Int32)

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Return the particular element of single-channel array. If the array has multiple channels, runtime error is raised. Note that cvGet*D function can be used safely for both single-channel and multiple-channel arrays though they are a bit slower.
Declaration Syntax
C#Visual BasicVisual C++
public static double cvGetReal2D(
	IntPtr arr,
	int idx0,
	int idx1
)
Public Shared Function cvGetReal2D ( _
	arr As IntPtr, _
	idx0 As Integer, _
	idx1 As Integer _
) As Double
public:
static double cvGetReal2D(
	IntPtr arr, 
	int idx0, 
	int idx1
)
Parameters
arr (IntPtr)
Input array. Must have a single channel
idx0 (Int32)
The first zero-based component of the element index
idx1 (Int32)
The second zero-based component of the element index
Return Value
the particular element of single-channel array

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.3.0.0 (1.3.0.0)