Cv2.FindContoursAsMat Method

Cv2FindContoursAsMat Method

OpenCvSharp Class Library

Finds contours in a binary image.

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

Syntax

C++

Copy

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

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

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

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

Parameters

image: Type: OpenCvSharp.CPlusPlusInputOutputArray
Source, 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 the image while extracting the contours.
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

Cv2 Class

OpenCvSharp.CPlusPlus Namespace