Mat.FindContoursAsMat Method

MatFindContoursAsMat Method

OpenCvSharp Class Library

Finds contours in a binary image. The source is an 8-bit single-channel image. Non-zero pixels are treated as 1’s. Zero pixels remain 0’s, so the image is treated as binary. The function modifies this image while extracting the contours.

Namespace: OpenCvSharp.CPlusPlus
Assembly: OpenCvSharp.CPlusPlus (in OpenCvSharp.CPlusPlus.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C++

Copy

public MatOfPoint[] FindContoursAsMat(
	ContourRetrieval mode,
	ContourChain method,
	Nullable<Point> offset = null
)

Public Function FindContoursAsMat ( 
	mode As ContourRetrieval,
	method As ContourChain,
	Optional offset As Nullable(Of Point) = Nothing
) As MatOfPoint()

public:
array<MatOfPoint^>^ FindContoursAsMat(
	ContourRetrieval mode, 
	ContourChain method, 
	Nullable<Point> offset = nullptr
)

member FindContoursAsMat : 
        mode : ContourRetrieval * 
        method : ContourChain * 
        ?offset : Nullable<Point> 
(* Defaults:
        let _offset = defaultArg offset null
*)
-> MatOfPoint[]

Parameters

mode: Type: OpenCvSharpContourRetrieval
Contour retrieval mode
method: Type: OpenCvSharpContourChain
Contour approximation method
offset (Optional): Type: SystemNullablePoint
Optional offset by which every contour point is shifted. This is useful if the contours are extracted from the image ROI and then they should be analyzed in the whole image context.

Return Value

Type: MatOfPoint
Detected contours. Each contour is stored as a vector of points.

Reference

Mat Class

OpenCvSharp.CPlusPlus Namespace