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HistogramCommand Constructor(HistogramCommandFlags)
See Also  Example



channel
Flags that indicate the channel for which to get the histogram and the bits to use in calculating the histogram.
Initializes a new HistogramCommand class object with explicit parameters. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal channel As HistogramCommandFlags _
)
Visual Basic (Usage)Copy Code
Dim channel As HistogramCommandFlags
 
Dim instance As New HistogramCommand(channel)
C# 
public HistogramCommand( 
   HistogramCommandFlags channel
)
C++/CLI 
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.

Example

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

Visual BasicCopy Code
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 Integer = command.Histogram

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
C#Copy Code
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
      int [] histogramValues = command.Histogram;

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
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;
}
SilverlightVBCopy Code
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

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also