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

Summary

Initializes a new ZeroToNegativeCommand class object with explicit parameters.

Syntax
C#
VB
Java
Objective-C
C++
Public Function New( _ 
   ByVal shiftAmount As Integer, _ 
   ByVal minimumInput As Integer, _ 
   ByVal maximumInput As Integer, _ 
   ByVal minimumOutput As Integer, _ 
   ByVal maximumOutput As Integer _ 
) 
- (instancetype)initWithShiftAmount:(NSInteger)shiftAmount 
                       minimumInput:(NSInteger)minimumInput 
                       maximumInput:(NSInteger)maximumInput 
                      minimumOutput:(NSInteger)minimumOutput 
                      maximumOutput:(NSInteger)maximumOutput 
public ZeroToNegativeCommand( 
   int shiftAmount,  
   int minimumInput,  
   int maximumInput,  
   int minimumOutput,  
   int maximumOutput 
) 
public: 
ZeroToNegativeCommand(  
   int shiftAmount, 
   int minimumInput, 
   int maximumInput, 
   int minimumOutput, 
   int maximumOutput 
) 

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.

C#
VB
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:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub ZeroToNegativeConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = 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. 
   Dim MinToZCommand As MinimumToZeroCommand = New MinimumToZeroCommand 
   MinToZCommand.Run(leadImage) 
 
   ' Apply multiscale enhancement 
   Dim MultiScaleCommand As MultiscaleEnhancementCommand = 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. 
   Dim command As ZeroToNegativeCommand = New ZeroToNegativeCommand(MinToZCommand.ShiftAmount, -32767, 32766, 0, 65535) 
   command.Run(leadImage) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 
c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void ZeroToNegativeConstructorExample(RasterImage image, Stream outStream) 
{ 
   // 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); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.DicomGray, image.BitsPerPixel); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub ZeroToNegativeConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   ' Convert the image to unsigned image by shifting the negative values to become positive. 
   Dim MinToZCommand As MinimumToZeroCommand = New MinimumToZeroCommand() 
   MinToZCommand.Run(image) 
 
   ' Apply multiscale enhancement 
   Dim MultiScaleCommand As MultiscaleEnhancementCommand = 
      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. 
   Dim command As ZeroToNegativeCommand = New ZeroToNegativeCommand(MinToZCommand.ShiftAmount, -32767, 32766, 0, 65535) 
   command.Run(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.DicomGray, image.BitsPerPixel) 
   image.Dispose() 
End Sub 

Requirements

Target Platforms

Help Version 20.0.2019.3.12
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Leadtools.ImageProcessing.Core Assembly