CogCaliper.ContrastThreshold Property

CogCaliper ContrastThreshold Property

Cognex VisionPro 9.5

Minimum contrast required for an edge to be considered during the scoring phase.

Namespace: Cognex.VisionPro.Caliper
Assembly: Cognex.VisionPro.Caliper (in Cognex.VisionPro.Caliper.dll) Version: 69.0.0.0

Syntax

C++

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public double ContrastThreshold { get; set; }

public double ContrastThreshold { get; set; }

Public Property ContrastThreshold As Double 
	Get 
	Set

Public Property ContrastThreshold As Double 
	Get 
	Set

public:
property double ContrastThreshold {
	double get ();
	void set (double value);
}

public:
property double ContrastThreshold {
	double get ();
	void set (double value);
}

Property Value

Type: Double

Events

Event Type	Reason
CogCaliper Changed	Fires when the value of this property changes. The following state flag may be affected: SfContrastThreshold

Event Type

Reason

CogCaliper Changed

Fires when the value of this property changes.

The following state flag may be affected:

SfContrastThreshold

Remarks

The minimum contrast required for an edge to be considered during the scoring phase. The contrast of an edge is the absolute difference in average pixel values across the edge, in the range 0 through 255. Only edges with contrast greater than the value you specify are considered by the tool.

Default Value: 5.0

Examples

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Imports Cognex.VisionPro
Imports Cognex.VisionPro.Caliper
Imports Cognex.VisionPro.ImageProcessing

' Working with a CogCaliperTool object
Dim myCaltool As New CogCaliperTool

' Specify a higher contrast threshold to filter extraneous low-contrast edges 
myCaltool.RunParams.ContrastThreshold = 30

Imports Cognex.VisionPro
Imports Cognex.VisionPro.Caliper
Imports Cognex.VisionPro.ImageProcessing

' Working with a CogCaliperTool object
Dim myCaltool As New CogCaliperTool

' Specify a higher contrast threshold to filter extraneous low-contrast edges 
myCaltool.RunParams.ContrastThreshold = 30

C++

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using Cognex.VisionPro;
using Cognex.VisionPro.Caliper;
using Cognex.VisionPro.ImageProcessing;

// Working with a CogCaliperTool object
CogCaliperTool myCaltool = new CogCaliperTool();

// Specify a higher contrast threshold to filter extraneous low-contrast edges 
myCaltool.RunParams.ContrastThreshold = 30;

using Cognex.VisionPro;
using Cognex.VisionPro.Caliper;
using Cognex.VisionPro.ImageProcessing;

// Working with a CogCaliperTool object
CogCaliperTool myCaltool = new CogCaliperTool();

// Specify a higher contrast threshold to filter extraneous low-contrast edges 
myCaltool.RunParams.ContrastThreshold = 30;