Method FindContoursAsMat

Namespace

OpenCvSharp

Assembly

OpenCvSharp.dll

FindContoursAsMat(InputArray, RetrievalModes, ContourApproximationModes, Point?)

Finds contours in a binary image.

public static Mat<Point>[] FindContoursAsMat(InputArray image, RetrievalModes mode, ContourApproximationModes method, Point? offset = null)

Parameters

image InputArray

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 RetrievalModes

Contour retrieval mode

method ContourApproximationModes

Contour approximation method

offset Point?

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.

Returns

Mat<Point>[]

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