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MinimumCommand Class

Dilates dark objects by the specified amount.This command is available in the Document/Medical Toolkits.
public class MinimumCommand : RasterCommand 
Public Class MinimumCommand  
   Inherits RasterCommand 
@interface LTMinimumCommand : LTRasterCommand 
public class MinimumCommand extends RasterCommand 
public ref class MinimumCommand : public RasterCommand   
  • This command can process the whole image or a region of the image.
  • The effect can be controlled by specifying the size of the neighborhood that is used for calculating each pixel value. For example, for 8x8, set the Dimension property to 8 or pass 8 for the dimension parameter of the Constructor. Each pixel is replaced with the minimum value of its neighborhood.
  • 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 the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.
  • This command supports signed/unsigned data images.

For more information, refer to Removing Noise.


Run the MinimumCommand on an image with a neighborhood Dimensions = 3x3 pixels.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
public void MinimumCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\NaturalFruits.jpg")); 
   // Prepare the command 
   MinimumCommand command = new MinimumCommand(); 
   //Apply the Minimum filter. 
   command.Dimension = 3; 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
Public Sub MinimumCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\NaturalFruits.jpg")) 
   ' Prepare the command 
   Dim command As MinimumCommand = New MinimumCommand 
   'Apply the Minimum filter. 
   command.Dimension = 3 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 

Target Platforms

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Leadtools.ImageProcessing.Core Assembly