ZeroToNegativeCommand Constructor()

Summary

Initializes a new ZeroToNegativeCommand class object with default parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public ZeroToNegativeCommand()

- (instancetype)init

public ZeroToNegativeCommand();

public: 
ZeroToNegativeCommand();

__init__() # Default constructor

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ZeroToNegativeCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Beauty16.jpg")); 
 
   // Prepare the command 
   // Convert the image to unsigned image by shifting the negative values to become positive. 
   MinimumToZeroCommand MinToZCommand = new MinimumToZeroCommand(); 
   MinToZCommand.Run(image); 
 
   // Apply multiscale enhancement 
   MultiscaleEnhancementCommand MultiScaleCommand = new MultiscaleEnhancementCommand(2000, 4, -1, 0, 0, MultiscaleEnhancementCommandType.Gaussian, MultiscaleEnhancementCommandFlags.EdgeEnhancement); 
   MultiScaleCommand.Run(image); 
 
   // Convert the image back to signed by shifting the same amount in the negative side. 
   ZeroToNegativeCommand command = new ZeroToNegativeCommand(); 
   command.MinimumInput = -32767; 
   command.MaximumInput = 32766; 
   command.MinimumOutput = 0; 
   command.MaximumOutput = 65535; 
   command.ShiftAmount = MinToZCommand.ShiftAmount; 
   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 zeroToNegativeCommandExample() { 
   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, "Beauty16.jpg")); 
 
   // Prepare the command 
   // Convert the image to unsigned image by shifting the negative values to become 
   // positive. 
   MinimumToZeroCommand minToZCommand = new MinimumToZeroCommand(); 
   minToZCommand.run(image); 
 
   // Apply multiscale enhancement 
   MultiscaleEnhancementCommand multiScaleCommand = new MultiscaleEnhancementCommand(2000, 4, -1, 0, 0, 
         MultiscaleEnhancementCommandType.GAUSSIAN, MultiscaleEnhancementCommandFlags.EDGE_ENHANCEMENT.getValue()); 
   multiScaleCommand.run(image); 
 
   // Convert the image back to signed by shifting the same amount in the negative 
   // side. 
   ZeroToNegativeCommand command = new ZeroToNegativeCommand(); 
   command.setMinimumInput(-32767); 
   command.setMaximumInput(32766); 
   command.setMinimumOutput(0); 
   command.setMaximumOutput(65535); 
   command.setShiftAmount(minToZCommand.getShiftAmount()); 
   int change = command.run(image); 
   assertTrue(change != RasterImageChangedFlags.NONE); 
 
   codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

ZeroToNegativeCommand Class

ZeroToNegativeCommand Members

Overload List

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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Leadtools.ImageProcessing.Core Namespace

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