ConvertSignedToUnsignedCommand Class

Summary

Converts a signed image to unsigned.

Syntax

Objective-C

C++

Java

public class ConvertSignedToUnsignedCommand : RasterCommand

Public Class ConvertSignedToUnsignedCommand  
   Inherits RasterCommand

@interface LTConvertSignedToUnsignedCommand : LTRasterCommand

public class ConvertSignedToUnsignedCommand extends RasterCommand

public ref class ConvertSignedToUnsignedCommand : public RasterCommand

Remarks

The image may contain negative pixel values and LEADTOOLS will paint/process the image incorrectly. To use this image correctly the negative pixels should be converted, if it contains negative pixels (if Signed is True).
If the Signed is set to True, this method will shift the color values in the image according to Type property.
The method will also update the MinValue and MaxValue properties of the RasterImage.
.
This method 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.

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

Example

Run the ConvertSignedToUnsignedCommand on an image. The passed image must be signed image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ConvertSignedToUnsignedCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE2.dcm")); 
 
   // Prepare the command 
   ConvertSignedToUnsignedCommand command = new ConvertSignedToUnsignedCommand(); 
   command.Type = ConvertSignedToUnsignedCommandType.ShiftNegativeToZero; 
   //convert image to unsigned. 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub ConvertSignedToUnsignedCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE2.dcm")) 
 
   ' Prepare the command 
   Dim command As ConvertSignedToUnsignedCommand = New ConvertSignedToUnsignedCommand 
   command.Type = ConvertSignedToUnsignedCommandType.ShiftNegativeToZero 
   'convert image to unsigned. 
   command.Run(leadImage) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ConvertSignedToUnsignedCommandExample(RasterImage image) 
{ 
   // Prepare the command 
   ConvertSignedToUnsignedCommand command = new ConvertSignedToUnsignedCommand(); 
   command.Type = ConvertSignedToUnsignedCommandType.ShiftNegativeToZero; 
   //convert image to unsigned. 
   command.Run(image); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub ConvertSignedToUnsignedCommandExample(ByVal image As RasterImage) 
   ' Prepare the command 
   Dim command As ConvertSignedToUnsignedCommand = New ConvertSignedToUnsignedCommand() 
   command.Type = ConvertSignedToUnsignedCommandType.ShiftNegativeToZero 
   'convert image to unsigned. 
   command.Run(image) 
   image.Dispose() 
End Sub