MinMaxValuesCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class MinMaxValuesCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration

Public Class MinMaxValuesCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage

Dim instance As MinMaxValuesCommand

public sealed class MinMaxValuesCommand : Leadtools.ImageProcessing.IRasterCommand

@interface LTMinMaxValuesCommand : LTRasterCommand

public class MinMaxValuesCommand extends RasterCommand

function Leadtools.ImageProcessing.Core.MinMaxValuesCommand()

public ref class MinMaxValuesCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

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.
LEADTOOLS supports two types of LUTs for 10-16-bit grayscale images (8-bit LUT and 16-bit LUT). Typical grayscale image display and processing is done using an 8-bit LUT. But, you can also use a 16-bit LUT, which offers more precision. Some special video cards and monitors also support display of grayscale images using a 16-bit LUT.

For more information, refer to Introduction to Image Processing With LEADTOOLS.
For more information, refer to Grayscale Images.

In Silverlight versions of LEADTOOLS, this image processing command will fail if the image data for the RasterImage object is stored internally using a Silverlight WriteableBitmap object. For more information, refer to Image Processing Command Limitations in Silverlight.

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

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

   
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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

      
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";
}

function MinMaxValuesCommandExample()
{
   var codecs = new Leadtools.Codecs.RasterCodecs();
   codecs.throwExceptionsOnInvalidImages = true;

   // Load the image
   var srcFileName = "Assets\\Beauty16.jpg";
   return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile));
   }).then(function (image) {
      // Prepare the command
      with (Leadtools.ImageProcessing.Core) {
         var command  = new MinMaxValuesCommand();
         var MinimumValue = 0; //the minimum value.
         var MaximumValue = 0; //the maximum value.
         //Get min/max values.
         command.run(image);
         MinimumValue = command.minimumValue;
         MaximumValue = command.maximumValue;
         console.error("The Minuimum Value is : " + MinimumValue.toString() + ", The Maximum Value is : " + MaximumValue.toString());
      }
   });
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

      
public async Task MinMaxValuesCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Beauty16.jpg";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // 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());

}

using Leadtools;
using Leadtools.Examples;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

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();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

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

Target Platforms

Reference

MinMaxValuesCommand Members
Leadtools.ImageProcessing.Core Namespace
Introduction to Image Processing With LEADTOOLS
Grayscale Images
Color Halftone and Halftone Images
MinMaxBitsCommand Class
WindowLevelCommand Class