HistogramCommand Constructor(HistogramCommandFlags)

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public HistogramCommand( 
   HistogramCommandFlags channel
)

'Declaration

Public Function New( _
   ByVal channel As HistogramCommandFlags _
)

'Usage

Dim channel As HistogramCommandFlags
 
Dim instance As New HistogramCommand(channel)

public HistogramCommand( 
   HistogramCommandFlags channel
)

- (instancetype)initWithChannel:(LTHistogramCommandFlags)channel

public HistogramCommand(int channel)

function HistogramCommand( 
   channel 
)

public:
HistogramCommand( 
   HistogramCommandFlags channel
)

Parameters

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

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

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

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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

Target Platforms

Reference

HistogramCommand Class
HistogramCommand Members
Overload List