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HistogramCommand Constructor(HistogramCommandFlags)

Summary

Initializes a new HistogramCommand class object with explicit parameters.

Syntax

Java

Objective-C

WinRT C#

C++

public HistogramCommand(  
   Leadtools.Imageprocessing.Color.HistogramCommandFlags channel 
)

Public Function New( _ 
   ByVal channel As Leadtools.Imageprocessing.Color.HistogramCommandFlags _ 
)

public HistogramCommand(  
   Leadtools.Imageprocessing.Color.HistogramCommandFlags channel 
)

- (instancetype)initWithChannel:(LTHistogramCommandFlags)channel

public HistogramCommand(int channel)

function HistogramCommand(  
   channel  
)

public: 
HistogramCommand(  
   Leadtools.Imageprocessing.Color.HistogramCommandFlags channel 
)

Parameters

channel
Flags that indicate the channel for which to get the histogram and the bits to use in calculating the histogram.

Example

Run the HistogramCommand on an image to get the red-channel histogram.

WinRT C#

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
    
Public Sub HistogramConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")) 
 
   ' Prepare the command 
   Dim command As HistogramCommand = New HistogramCommand(HistogramCommandFlags.Red Or HistogramCommandFlags.AllBits) 
   command.Run(leadImage) 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
   'This is where the histogram information strored 
   Dim histogramValues() As Long = command.Histogram 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
       
public void HistogramConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   HistogramCommand command = new HistogramCommand(HistogramCommandFlags.Red |   HistogramCommandFlags.AllBits); 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
   //This is where the histogram information strored 
   long [] histogramValues = command.Histogram; 
 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
       
public async Task HistogramConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   // Load the image 
   string srcFileName = @"Assets\Image1.cmp"; 
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); 
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); 
 
   // Prepare the command 
   HistogramCommand command = new HistogramCommand(HistogramCommandFlags.Red |   HistogramCommandFlags.AllBits); 
   command.Run(image); 
 
   string destFileName = @"result.jpg"; 
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); 
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0); 
 
   //This is where the histogram information strored 
   long [] histogramValues = command.Histogram; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Examples; 
 
public void HistogramConstructorExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   HistogramCommand command = new HistogramCommand(HistogramCommandFlags.Red |   HistogramCommandFlags.AllBits); 
   command.Run(image); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
 
   //This is where the histogram information is stored 
   int [] histogramValues = command.Histogram; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
 
Public Sub HistogramConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As HistogramCommand = New HistogramCommand(HistogramCommandFlags.Red Or HistogramCommandFlags.AllBits) 
   command.Run(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
 
   'This is where the histogram information is stored 
   Dim histogramValues As Integer() = command.Histogram 
End Sub