IntensityDetectCommand Class

Summary

Applies binary segmentation to an image by filtering a specific image to detect colors in a specific intensity range, in a specific color channel(s).

Syntax

Objective-C

C++

Java

public class IntensityDetectCommand : RasterCommand

Public Class IntensityDetectCommand  
   Inherits RasterCommand

@interface LTIntensityDetectCommand : LTRasterCommand

public class IntensityDetectCommand extends RasterCommand

public ref class IntensityDetectCommand : public RasterCommand

Remarks

The image is divided into two parts, inner and outer according to the values of the LowThreshold property and the HighThreshold property.
The class can process 2 or more channels at a time by OR-ing two or more flags.
This class supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support 32-bit grayscale images.
This command supports unsigned data images, but not signed ones.

For more information, refer to Changing Brightness and Contrast. For more information, refer to Correcting Colors. For more information, refer to Detecting and Enhancing Edges and Lines.

Example

Run the IntensityDetectCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
public void IntensityDetectCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "dirty_barcode.jpg")); 
 
   // Prepare the command 
   IntensityDetectCommand command = new IntensityDetectCommand(); 
   //Apply the filter. 
   command.LowThreshold = 128; 
   command.HighThreshold = 255; 
   command.InColor = new RasterColor(255, 255, 255); 
   command.OutColor = new RasterColor(0, 0, 0); 
   command.Channel = IntensityDetectCommandFlags.Master; 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub IntensityDetectCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "dirty_barcode.jpg")) 
 
   ' Prepare the command 
   Dim command As IntensityDetectCommand = New IntensityDetectCommand 
   'Apply the filter. 
   command.LowThreshold = 128 
   command.HighThreshold = 255 
   command.InColor = New RasterColor(255, 255, 255) 
   command.OutColor = New RasterColor(0, 0, 0) 
   command.Channel = IntensityDetectCommandFlags.Master 
 
   command.Run(leadImage) 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
 
public void IntensityDetectCommandExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   IntensityDetectCommand command = new IntensityDetectCommand(); 
   //Apply the filter. 
   command.LowThreshold = 128; 
   command.HighThreshold = 255; 
   command.InColor = new RasterColor(255, 255, 255); 
   command.OutColor = new RasterColor(0, 0, 0); 
   command.Channel = IntensityDetectCommandFlags.Master; 
   command.Run(image); 
 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub IntensityDetectCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As IntensityDetectCommand = New IntensityDetectCommand() 
   'Apply the filter. 
   command.LowThreshold = 128 
   command.HighThreshold = 255 
   command.InColor = New RasterColor(255, 255, 255) 
   command.OutColor = New RasterColor(0, 0, 0) 
   command.Channel = IntensityDetectCommandFlags.Master 
   command.Run(image) 
 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub