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MinMaxValuesCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Core Namespace : MinMaxValuesCommand Class



Gets the minimum and maximum intensity values present in a 12 or 16-bit grayscale or a 48 or 64-bit color image. This class is available in the Medical Toolkits.

Syntax

Visual Basic (Declaration) 
Public Class MinMaxValuesCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As MinMaxValuesCommand
C# 
public class MinMaxValuesCommand : RasterCommand, IRasterCommand 
C++/CLI 
public ref class MinMaxValuesCommand : public RasterCommand, IRasterCommand 

Example

Run the MinMaxValuesCommand on an image and gets the minimum and maximum pixel values for an image.

Visual BasicCopy Code
Public Sub MinMaxValuesCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Beauty16.jpg")

   ' Prepare the command
   Dim command As MinMaxValuesCommand = New MinMaxValuesCommand
   Dim MinimumValue As Integer 'the minimum value.
   Dim MaximumValue As Integer 'the maximum value.

   MinimumValue = 0
   MaximumValue = 0

   'Get min/max values.

   command.Run(leadImage)
   MinimumValue = command.MinimumValue
   MaximumValue = command.MaximumValue
   MessageBox.Show("The Minuimum Value is : " + MinimumValue.ToString() + ", The Maximum Value is : " + MaximumValue.ToString())

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void MinMaxValuesCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Beauty16.jpg"); 
 
   // Prepare the command 
   MinMaxValuesCommand command  = new MinMaxValuesCommand(); 
   int MinimumValue = 0; //the minimum value. 
   int MaximumValue = 0; //the maximum value. 
   //Get min/max values. 
   command.Run(image); 
   MinimumValue = command.MinimumValue; 
   MaximumValue = command.MaximumValue; 
   MessageBox.Show("The Minuimum Value is : " + MinimumValue.ToString() + ", The Maximum Value is : " + MaximumValue.ToString()); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • The minimum and maximum values can be used to create a lookup table, for use in the WindowLevelCommand class.
  • For signed images, the minimum intensity and the maximum intensity values can be negative.
  • This class supports 12 and 16-bit grayscale images. Support for 12 and 16-bit grayscale images is available only in the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.
For more information, refer to Introduction to Image Processing With LEADTOOLS.
For more information, refer to Grayscale Images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Core.MinMaxValuesCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also