ColorLevelCommandData Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class ColorLevelCommandData

'Declaration
 
Public Class ColorLevelCommandData

'Usage
 
Dim instance As ColorLevelCommandData

public sealed class ColorLevelCommandData

function Leadtools.ImageProcessing.Color.ColorLevelCommandData()

public ref class ColorLevelCommandData

The value of the MaximumInput property must be greater than the value of the MinimumInput property by at least 2.
If MinimumOutput > MaximumOutput then the image's shadows and highlights will be inverted for the given channel.
This class is used by the ColorLevelCommand class.
This class does not support 32-bit grayscale images.

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

Public Sub ColorLevelCommandDataExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

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

   ' Prepare the command
   Dim blue As ColorLevelCommandData = New ColorLevelCommandData
   Dim master As ColorLevelCommandData = New ColorLevelCommandData
   'Specify Image levels
   blue.MinimumInput = 20
   blue.MaximumInput = 200
   blue.MinimumOutput = 0
   blue.MaximumOutput = 255
   blue.Gamma = 100
   ' Master will cause the image to be Inversed
   master.MinimumInput = 0
   master.MaximumInput = 255
   master.MinimumOutput = 255
   master.MaximumOutput = 0
   master.Gamma = 100
   ' Level the Blue and Master channels
   Dim command As ColorLevelCommand = New ColorLevelCommand(master, Nothing, Nothing, blue, ColorLevelCommandFlags.Blue Or ColorLevelCommandFlags.Master)
   command.Run(leadImage)
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void ColorLevelCommandDataExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      ColorLevelCommandData blue = new ColorLevelCommandData();
      ColorLevelCommandData master = new ColorLevelCommandData();
      //Specify Image levels
      blue.MinimumInput = 20;
      blue.MaximumInput = 200;
      blue.MinimumOutput = 0;
      blue.MaximumOutput = 255;
      blue.Gamma = 100;
      // Master will cause the image to be Inversed
      master.MinimumInput = 0;
      master.MaximumInput = 255;
      master.MinimumOutput = 255;
      master.MaximumOutput = 0;
      master.Gamma = 100;
      // Level the Blue and Master channels
      ColorLevelCommand command = new ColorLevelCommand(master, null, null, blue, ColorLevelCommandFlags.Blue | ColorLevelCommandFlags.Master);
      command.Run(image);
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task ColorLevelCommandDataExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   ColorLevelCommandData blue = new ColorLevelCommandData();
   ColorLevelCommandData master = new ColorLevelCommandData();
   //Specify Image levels
   blue.MinimumInput = 20;
   blue.MaximumInput = 200;
   blue.MinimumOutput = 0;
   blue.MaximumOutput = 255;
   blue.Gamma = 100;
   // Master will cause the image to be Inversed
   master.MinimumInput = 0;
   master.MaximumInput = 255;
   master.MinimumOutput = 255;
   master.MaximumOutput = 0;
   master.Gamma = 100;
   // Level the Blue and Master channels
   ColorLevelCommand command = new ColorLevelCommand(master, null, null, blue, ColorLevelCommandFlags.Blue | ColorLevelCommandFlags.Master);
   command.Run(image);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}

public void ColorLevelCommandDataExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   ColorLevelCommandData blue = new ColorLevelCommandData();
   ColorLevelCommandData master = new ColorLevelCommandData();
   //Specify Image levels
   blue.MinimumInput = 20;
   blue.MaximumInput = 200;
   blue.MinimumOutput = 0;
   blue.MaximumOutput = 255;
   blue.Gamma = 100;
   // Master will cause the image to be Inversed
   master.MinimumInput = 0;
   master.MaximumInput = 255;
   master.MinimumOutput = 255;
   master.MaximumOutput = 0;
   master.Gamma = 100;
   // Level the Blue and Master channels
   ColorLevelCommand command = new ColorLevelCommand(master, null, null, blue, ColorLevelCommandFlags.Blue | ColorLevelCommandFlags.Master);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub ColorLevelCommandDataExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim blue As ColorLevelCommandData = New ColorLevelCommandData()
   Dim master As ColorLevelCommandData = New ColorLevelCommandData()
   'Specify Image levels
   blue.MinimumInput = 20
   blue.MaximumInput = 200
   blue.MinimumOutput = 0
   blue.MaximumOutput = 255
   blue.Gamma = 100
   ' Master will cause the image to be Inversed
   master.MinimumInput = 0
   master.MaximumInput = 255
   master.MinimumOutput = 255
   master.MaximumOutput = 0
   master.Gamma = 100
   ' Level the Blue and Master channels
   Dim command As ColorLevelCommand = New ColorLevelCommand(master, Nothing, Nothing, blue, ColorLevelCommandFlags.Blue Or ColorLevelCommandFlags.Master)
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ColorLevelCommandData Members
Leadtools.ImageProcessing.Color Namespace