ZeroToNegativeCommand Constructor(int,int,int,int,int)

Summary

Initializes a new ZeroToNegativeCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public ZeroToNegativeCommand( 
   int shiftAmount, 
   int minimumInput, 
   int maximumInput, 
   int minimumOutput, 
   int maximumOutput 
)

- (instancetype)initWithShiftAmount:(NSInteger)shiftAmount minimumInput:(NSInteger) minimumInput maximumInput:(NSInteger)maximumInput minimumOutput:(NSInteger)minimumOutput maximumOutput:(NSInteger)maximumOutput NS_DESIGNATED_INITIALIZER;

public ZeroToNegativeCommand( 
   int shiftAmount, 
   int minimumInput, 
   int maximumInput, 
   int minimumOutput, 
   int maximumOutput 
);

public: 
ZeroToNegativeCommand(  
   int shiftAmount, 
   int minimumInput, 
   int maximumInput, 
   int minimumOutput, 
   int maximumOutput 
)

__init__(self,shiftAmount,minimumInput,maximumInput,minimumOutput,maximumOutput) # Overloaded constructor

Parameters

shiftAmount
Value that is used to shift the image data to the negative side.

minimumInput
The image minimum value. This value can be obtained MinMaxValuesCommand

maximumInput
The image maximum value. This value can be obtained MinMaxValuesCommand

minimumOutput
The minimum allowed value, which means that the image data values after applying the command will not be less than this value.

maximumOutput
The maximum allowed value, which means that the image data values after applying the command will not exceed this value.

Example

This command will apply MultiscaleEnhancementCommand on a signed image, but since MultiscaleEnhancementCommand does not support signed images, we will convert the image to unsigned image, apply the effect, and then convert it back to signed image.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ZeroToNegativeConstructorExample() 
{ 
   // 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); 
 
   // Convert the image back to signed by shifting the same amount in the negative side. 
   ZeroToNegativeCommand command = new ZeroToNegativeCommand(MinToZCommand.ShiftAmount, -32767, 32766, 0, 65535); 
   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 zeroToNegativeConstructorExample() { 
 
   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(minToZCommand.getShiftAmount(), -32767, 32766, 0, 
         65535); 
   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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