Inverts the colors in the specified image, giving it the appearance of a photographic negative. Supported in Silverlight, Windows Phone 7

Object Model

Syntax

Visual Basic (Declaration)
Public Class InvertCommand Inherits Leadtools.ImageProcessing.RasterCommand Implements IRasterCommand

Visual Basic (Usage)	Copy Code
Dim instance As InvertCommand

C#
public class InvertCommand : Leadtools.ImageProcessing.RasterCommand, IRasterCommand

C++/CLI
public ref class InvertCommand : public Leadtools.ImageProcessing.RasterCommand, IRasterCommand

Example

Run the Leadtools.ImageProcessing.Color.InvertCommand on an image.

Visual Basic	Copy Code
Public Sub InvertCommandExample() 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 command As InvertCommand = New InvertCommand 'Invert the colors of the image. 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

Visual Basic

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Public Sub InvertCommandExample()
   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 command As InvertCommand = New InvertCommand
   'Invert the colors of the image.

   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

C#	Copy Code
public void InvertCommandExample() { // Load an image RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); // Prepare the command InvertCommand command = new InvertCommand(); //Invert the colors of the image. 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"; }

Copy Code

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

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

      // Prepare the command
      InvertCommand command  = new InvertCommand();
      //Invert the colors of the image.
      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";
}

SilverlightCSharp	Copy Code
public void InvertCommandExample(RasterImage image, Stream outStream) { // Prepare the command InvertCommand command = new InvertCommand(); //Invert the colors of the image. command.Run(image); // Save result image RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); image.Dispose(); }

SilverlightCSharp

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public void InvertCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   InvertCommand command  = new InvertCommand();
   //Invert the colors of the image.
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

SilverlightVB	Copy Code
Public Sub InvertCommandExample(ByVal image As RasterImage, ByVal outStream As Stream) ' Prepare the command Dim command As InvertCommand = New InvertCommand() 'Invert the colors of the image. command.Run(image) ' Save result image Dim codecs As RasterCodecs = New RasterCodecs() codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) image.Dispose() End Sub

SilverlightVB

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Public Sub InvertCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As InvertCommand = New InvertCommand()
   'Invert the colors of the image.
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Remarks

This class can also be used to invert the color of a 1-bit image, making the black white and the white black.
This class supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support 32-bit grayscale images.
This command supports signed data images.

This command changes the image data. If the image has a LUT, the command will work on the LUT not the image data. If the image has a LUT and you want to work on the image data, first disable the use of the LUT by setting the UseLookupTable Property to FALSE. After you are finished applying the command, restore the use of the LUT by setting the UseLookupTable Property to TRUE again. See the following snippet:

            image.UseLookupTable = FALSE;
            InvertCmd.Run(image);
            image.UseLookupTable = TRUE;

For more information, refer to Correcting Colors.

Inheritance Hierarchy

System.Object
Leadtools.ImageProcessing.RasterCommand
Leadtools.ImageProcessing.Color.InvertCommand

Requirements

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

LEADTOOLS Image Processing (Leadtools.ImageProcessing.Color assembly)	Send comments on this topic. \| Back to Introduction - All Topics \| Help Version 17.0.3.29
InvertCommand Class
See Also Members

Object Model

Syntax

Example

Remarks

Inheritance Hierarchy

Requirements

See Also

Reference