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ColorLevelCommandData Class

Summary

The ColorLevelCommandData class contains color-leveling information for a specific color channel.

Syntax

Java

Objective-C

WinRT C#

C++

public class ColorLevelCommandData

Public Class ColorLevelCommandData

public sealed class ColorLevelCommandData

@interface LTColorLevelCommandData : NSObject

public class ColorLevelCommandData

function Leadtools.ImageProcessing.Color.ColorLevelCommandData()

public ref class ColorLevelCommandData

Remarks

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.

Example

Run the ColorLevelCommand on an image.

WinRT C#

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
    
Public Sub ColorLevelCommandDataExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")) 
 
   ' 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

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
       
public void ColorLevelCommandDataExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // 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"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
       
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); 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
 
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(); 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
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