BackGroundRemovalCommand Class

Summary

Removes the background from an image by applying sigmoid curve to attenuate non-anatomic areas.

Syntax

Objective-C

C++

Java

public class BackGroundRemovalCommand : RasterCommand

Public Class BackGroundRemovalCommand 
InheritsRasterCommand 
ImplementsRasterCommand

@interface LTBackGroundRemovalCommand : LTRasterCommand

public class BackGroundRemovalCommand extends RasterCommand

c+ + [C++ Syntax] 
public ref class BackGroundRemovalCommand : publicRasterCommand, RasterCommand

public: 
   ref class BackGroundRemovalCommand : RasterCommand

Remarks

This command is useful, especially with medical images and grayscale images, in reducing the values of the background area.
This command reduces background by matching the histgram of the input image to a predefined Sigmoid curve.
BGRemovalFactor property of this command affects the center of the applied Sigmoid curve.
In order to enhance anatomic areas, user needs to apply MultiscaleEnhancementCommand to the output of this command.
This command removes background by attenuating its values according to the lower half of the Sigmoid curve, whereas, SubtractBackgroundCommand subtracts the estimated background from the rolling ball algorithm.
This command 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 theDocument / Medical toolkits.
This command does not support signed data images.
This command does not support 32 - bit grayscale images.

Example

Run theBackGroundRemovalCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void BackGroundRemovalCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image2.dcm")); 
 
   // Prepare the command 
   BackGroundRemovalCommand command = new BackGroundRemovalCommand(); 
   command.BGRemovalFactor = 600; 
   command.Run(image); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub BackGroundRemovalCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")) 
 
   ' Prepare the command 
   Dim command As BackGroundRemovalCommand = New BackGroundRemovalCommand 
   'Determine whether the image is blank. 
   command.BGRemovalFactor = 800 
 
   command.Run(leadImage) 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

Requirements

Target Platforms

Reference

BackGroundRemovalCommand Members

Leadtools.ImageProcessing.Core Namespace

Leadtools.ImageProcessing.Color.MultiscaleEnhancementCommand

Leadtools.ImageProcessing.Color.SubtractBackgroundCommand

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Help Version 20.0.2020.4.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies