Signed Property

Summary

Determines if the image data contains integer signed values.

Syntax

Objective-C

C++/CLI

Java

Python

public bool Signed { get; set; }

@property (nonatomic, assign) BOOL isSignedData

public boolean getSigned(); 
public void setSigned( 
   boolean booleanValue 
);

public: 
property bool Signed { 
   bool get(); 
   void set (    bool ); 
}

Signed # get and set (RasterImage)

Property Value

true if the image data contains signed (i.e. positive and negative) values; false, otherwise.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
 
 
public void ClearNegativePixelsCommandExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "CleanNegativePixelsCommand.tif"); 
 
	// Load the CMP file and convert it to TIF 
	RasterImage image = codecs.Load(srcFileName); 
	image.Signed = true; 
	codecs.Save(image, destFileName, RasterImageFormat.Tif, 24); 
	image.Dispose(); 
 
	// Load this image as signed 
	codecs.Options.Load.Signed = true; 
 
	// Load the source image from disk 
	image = codecs.Load(destFileName); 
	Assert.IsTrue(image.Signed); 
 
	// Clear the negative pixels and save it it back 
	ClearNegativePixelsCommand command = new ClearNegativePixelsCommand(); 
	command.Run(image); 
	Assert.IsTrue(!image.Signed); 
 
	codecs.Save(image, destFileName, RasterImageFormat.Tif, 24); 
 
	// Clean up 
	image.Dispose(); 
	codecs.Dispose(); 
} 
 
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.*; 
 
 
public void clearNegativePixelsCommandExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "rgsref.cmp"); 
   String destFileName = combine(LEAD_VARS_IMAGES_DIR, "CleanNegativePixelsCommand.tif"); 
 
   // Load the CMP file and convert it to TIF 
   RasterImage image = codecs.load(srcFileName); 
   image.setSigned(true); 
   codecs.save(image, destFileName, RasterImageFormat.TIF, 24); 
   image.dispose(); 
 
   // Load this image as signed 
   codecs.getOptions().getLoad().setSigned(true); 
 
   // Load the source image from disk 
   image = codecs.load(destFileName); 
   assertTrue(image.getSigned()); 
 
   // Clear the negative pixels and save it it back 
   ClearNegativePixelsCommand command = new ClearNegativePixelsCommand(); 
   command.run(image); 
   assertTrue(!image.getSigned()); 
 
   codecs.save(image, destFileName, RasterImageFormat.TIF, 24); 
   assertTrue("file unsuccessfully saved to " + destFileName, (new File(destFileName)).exists()); 
   System.out.printf("File saved successfully to %s%n", destFileName); 
 
   // Clean up 
   image.dispose(); 
   codecs.dispose(); 
}

Requirements

Target Platforms

Reference

RasterImage Class

RasterImage Members

RasterImage.Float

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Help Version 23.0.2024.5.22

Leadtools Assembly

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Getting Started

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Leadtools Namespace

Leadtools.ImageProcessing Namespace

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