Class VLFindContours.TVLFindContours

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Package: VisionLabPkg

Unit: VLFindContours

Inherits: TVLQueueVisionComponent

Contents 1 Syntax 1.1 Delphi: 1.2 C++ Builder: 1.3 Visual C++ (MFC): 1.4 C# (.NET): 2 Summary 3 Description 4 Properties 4.1 Published 5 Pins 6 Events 7 From TVLQueueVisionComponent 8 Properties 8.1 Public 9 Pins 10 From TVLSyncSinkFilter 11 Properties 11.1 Published 12 From TVLSinkFilter 13 Pins 14 From TSLBasicThreadedEnableFilter 15 Properties 15.1 Published 16 From TSLBasicThreadedFilter 17 Properties 17.1 Published

Syntax

Delphi:

type TVLFindContours = class( TVLQueueVisionComponent, IVLContours, TVLOWContoursSourcePin )

C++ Builder:

class TVLFindContours : public TVLQueueVisionComponent

Visual C++ (MFC):

class CTVLFindContours : public CTVLQueueVisionComponent

C# (.NET):

public ref class FindContours : Mitov.VisionLab.QueueVisionComponent

Summary

Finds contours in binary image.

Description

Use this component to find contours in binary image.

Diagram:

Example:

Original Image:	Contours detected by using Canny:

Properties

Published

• Mode - Desired contour mode.
• Method - Contour approximation method.
• Approximation - Specifies the approximation of the polygonal curves.

Pins

• OutputPin - The detected contours data output pin of the component.

Events

• OnContours - Occurs when the contours are detected.

From TVLQueueVisionComponent

Properties

Public

• CurrentImage - The most current processed image.

Pins

• ImageOutputPin - The Video Output Pin of the filter.

From TVLSyncSinkFilter

Properties

Published

• SynchronizeType

From TVLSinkFilter

Pins

• InputPin

From TSLBasicThreadedEnableFilter

Properties

Published

• Enabled

From TSLBasicThreadedFilter

Properties

Published

• Threading