Class VLBackgroundSubtractor.TVLBackgroundSubtractor

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Revision as of 23:53, 25 June 2013

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Package: VisionLabPkg

Unit: VLBackgroundSubtractor

Inherits: TVLCommonFilter

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 Methods 5.1 Public 6 Pins 7 From TVLCommonFilter 8 Properties 8.1 Public 9 Methods 9.1 Public 10 Pins 11 From TSLBasicThreadedEnableFilter 12 Properties 12.1 Published 13 From TSLBasicThreadedFilter 14 Properties 14.1 Published

Syntax

Delphi:

type TVLBackgroundSubtractor = class( TVLCommonFilter )

C++ Builder:

class TVLBackgroundSubtractor : public TVLCommonFilter

Visual C++ (MFC):

class CTVLBackgroundSubtractor : public CTVLCommonFilter

C# (.NET):

public ref class TVLBackgroundSubtractor : Mitov.VisionLab.CommonFilter

Summary

Subtracts the background using statistical background model.

Description

Use this component to subtracts the background using statistical background model.

Diagram:

Example:

Original Image:	Separation:
Extracted Foreground:	Learned Background:

Properties

Published

• Alpha - Speed of update.
• ThresholdDescribed - Well described background threshold.
• ThresholdClose - The sample is close to the existing components threshold.
• ThresholdSignificant - Component is significant enough for background threshold.
• Sigma - Initial standard deviation.
• ShadowDetection - Specifies the shadow detection settings.
• BoostOnStart - Boost the training when staring.
• MaxModes - Max number of modes.
• ComplexityReductionPrior - Complexity reduction prior.

Methods

Public

• procedure BoostLearning() - Boosts the background learning.

Pins

• ForegroundOutputPin - The Foreground Video Output Pin of the player.
• BackgroundOutputPin - The Background Video Output Pin of the player.
• ShadowOutputPin - The Shadow Video Output Pin of the player.

From TVLCommonFilter

Properties

Public

• InputVideoFormat

Methods

Public

• procedure ProcessFrame(Image : IVLImageBuffer)
• procedure ProcessFrame(InImage : IVLImageBuffer; var OutImage : IVLImageBuffer)
• procedure ProcessBitmap(InBitmap : TBitmap; OutBitmap : TBitmap)

Pins

• OutputPin
• InputPin

From TSLBasicThreadedEnableFilter

Properties

Published

• Enabled

From TSLBasicThreadedFilter

Properties

Published

• Threading