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MinMaxValuesCommand Class
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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. Supported in Silverlight, Windows Phone 7

Object Model

MinMaxValuesCommand Class

Syntax

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

Example

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

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

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\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())

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
public void MinMaxValuesCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\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());

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void MinMaxValuesCommandExample(RasterImage image)
{
   // 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;
   Debug.WriteLine("The Minuimum Value is : " + MinimumValue.ToString() + ", The Maximum Value is : " + MaximumValue.ToString());
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub MinMaxValuesCommandExample(ByVal image As RasterImage)
   ' Prepare the command
   Dim command As MinMaxValuesCommand = New MinMaxValuesCommand()
   Dim MinimumValue As Integer = 0 'the minimum value.
   Dim MaximumValue As Integer = 0 'the maximum value.
   'Get min/max values.
   command.Run(image)
   MinimumValue = command.MinimumValue
   MaximumValue = command.MaximumValue
   Debug.WriteLine("The Minuimum Value is : " & MinimumValue.ToString() & ", The Maximum Value is : " & MaximumValue.ToString())
   image.Dispose()
End Sub

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: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also