| Cv2DrawContours Method (InputOutputArray, IEnumerableIEnumerablePoint, Int32, Scalar, Int32, LineTypes, IEnumerableHierarchyIndex, Int32, NullablePoint) |
draws contours in the image
Namespace:
OpenCvSharp
Assembly:
OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0
Syntax public static void DrawContours(
InputOutputArray image,
IEnumerable<IEnumerable<Point>> contours,
int contourIdx,
Scalar color,
int thickness = 1,
LineTypes lineType = LineTypes.Link8,
IEnumerable<HierarchyIndex> hierarchy = null,
int maxLevel = 2147483647,
Nullable<Point> offset = null
)
Public Shared Sub DrawContours (
image As InputOutputArray,
contours As IEnumerable(Of IEnumerable(Of Point)),
contourIdx As Integer,
color As Scalar,
Optional thickness As Integer = 1,
Optional lineType As LineTypes = LineTypes.Link8,
Optional hierarchy As IEnumerable(Of HierarchyIndex) = Nothing,
Optional maxLevel As Integer = 2147483647,
Optional offset As Nullable(Of Point) = Nothing
)
public:
static void DrawContours(
InputOutputArray^ image,
IEnumerable<IEnumerable<Point>^>^ contours,
int contourIdx,
Scalar color,
int thickness = 1,
LineTypes lineType = LineTypes::Link8,
IEnumerable<HierarchyIndex^>^ hierarchy = nullptr,
int maxLevel = 2147483647,
Nullable<Point> offset = nullptr
)
static member DrawContours :
image : InputOutputArray *
contours : IEnumerable<IEnumerable<Point>> *
contourIdx : int *
color : Scalar *
?thickness : int *
?lineType : LineTypes *
?hierarchy : IEnumerable<HierarchyIndex> *
?maxLevel : int *
?offset : Nullable<Point>
(* Defaults:
let _thickness = defaultArg thickness 1
let _lineType = defaultArg lineType LineTypes.Link8
let _hierarchy = defaultArg hierarchy null
let _maxLevel = defaultArg maxLevel 2147483647
let _offset = defaultArg offset null
*)
-> unit
Parameters
- image
- Type: OpenCvSharpInputOutputArray
Destination image. - contours
- Type: System.Collections.GenericIEnumerableIEnumerablePoint
All the input contours. Each contour is stored as a point vector. - contourIdx
- Type: SystemInt32
Parameter indicating a contour to draw. If it is negative, all the contours are drawn. - color
- Type: OpenCvSharpScalar
Color of the contours. - thickness (Optional)
- Type: SystemInt32
Thickness of lines the contours are drawn with. If it is negative (for example, thickness=CV_FILLED ),
the contour interiors are drawn. - lineType (Optional)
- Type: OpenCvSharpLineTypes
Line connectivity. - hierarchy (Optional)
- Type: System.Collections.GenericIEnumerableHierarchyIndex
Optional information about hierarchy. It is only needed if you want to draw only some of the contours - maxLevel (Optional)
- Type: SystemInt32
Maximal level for drawn contours. If it is 0, only the specified contour is drawn.
If it is 1, the function draws the contour(s) and all the nested contours. If it is 2, the function draws the contours,
all the nested contours, all the nested-to-nested contours, and so on. This parameter is only taken into account
when there is hierarchy available. - offset (Optional)
- Type: SystemNullablePoint
Optional contour shift parameter. Shift all the drawn contours by the specified offset = (dx, dy)
See Also