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ConvertSignedToUnsignedCommand Class

Summary
Converts a signed image to unsigned.
Syntax
C#
Objective-C
C++/CLI
Java
Python
public class ConvertSignedToUnsignedCommand : RasterCommand 
@interface LTConvertSignedToUnsignedCommand : LTRasterCommand 
public class ConvertSignedToUnsignedCommand 
    extends RasterCommand 
public ref class ConvertSignedToUnsignedCommand : public RasterCommand   
class ConvertSignedToUnsignedCommand(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.

C#
Java
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:\LEADTOOLS23\Resources\Images"; 
} 
 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void convertSignedToUnsignedCommandExample() { 
 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
    // Load an image 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.setThrowExceptionsOnInvalidImages(true); 
 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "DICOM\\IMAGE2.dcm")); 
 
    // Prepare the command 
    ConvertSignedToUnsignedCommand command = new ConvertSignedToUnsignedCommand(); 
    command.setType(ConvertSignedToUnsignedCommandType.SHIFT_NEGATIVE_TO_ZERO); 
 
    // Convert image to unsigned 
    command.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
    System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
 
} 
Requirements

Target Platforms

Help Version 23.0.2024.3.3
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© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.ImageProcessing.Core Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.