←Select platform

ConvertSignedToUnsignedCommand Class

Converts a signed image to unsigned.
public class ConvertSignedToUnsignedCommand : RasterCommand 
Public Class ConvertSignedToUnsignedCommand  
   Inherits RasterCommand 
@interface LTConvertSignedToUnsignedCommand : LTRasterCommand 
public class ConvertSignedToUnsignedCommand extends RasterCommand 
public ref class ConvertSignedToUnsignedCommand : public RasterCommand   
  • 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.


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. 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\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. 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 

Target Platforms

Help Version 21.0.2021.3.3
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.ImageProcessing.Core Assembly