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CvInvokecvGetMat Method
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Returns matrix header for the input array that can be matrix - CvMat, image - IplImage or multi-dimensional dense array - CvMatND* (latter case is allowed only if allowND != 0) . In the case of matrix the function simply returns the input pointer. In the case of IplImage* or CvMatND* it initializes header structure with parameters of the current image ROI and returns pointer to this temporary structure. Because COI is not supported by CvMat, it is returned separately.

Namespace: Emgu.CV
Assembly: Emgu.CV.World (in Emgu.CV.World.dll) Version: 3.1.0.2282 (3.1.0.2282)
Syntax
public static IntPtr cvGetMat(
	IntPtr arr,
	IntPtr header,
	out int coi,
	int allowNd
)

Parameters

arr
Type: SystemIntPtr
Input array
header
Type: SystemIntPtr
Pointer to CvMat structure used as a temporary buffer
coi
Type: SystemInt32
Optional output parameter for storing COI
allowNd
Type: SystemInt32
If non-zero, the function accepts multi-dimensional dense arrays (CvMatND*) and returns 2D (if CvMatND has two dimensions) or 1D matrix (when CvMatND has 1 dimension or more than 2 dimensions). The array must be continuous

Return Value

Type: IntPtr
Returns matrix header for the input array
See Also