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MatTElem Constructor (MatTElem, Rect)

creates a matrix header for a part of the bigger matrix

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0
Syntax
public Mat(
	Mat<TElem> m,
	Rect roi
)

Parameters

m
Type: OpenCvSharpMatTElem
Array that (as a whole or partly) is assigned to the constructed matrix. No data is copied by these constructors. Instead, the header pointing to m data or its sub-array is constructed and associated with it. The reference counter, if any, is incremented. So, when you modify the matrix formed using such a constructor, you also modify the corresponding elements of m . If you want to have an independent copy of the sub-array, use Mat.Clone() .
roi
Type: OpenCvSharpRect
Region of interest.
See Also