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StatisticsInformationCommand Class
See Also  Members   Example 
Leadtools.ImageProcessing.Effects Namespace : StatisticsInformationCommand Class



Returns statistical information about the image.

Syntax

Visual Basic (Declaration) 
Public Class StatisticsInformationCommand 
   Inherits RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As StatisticsInformationCommand
C# 
public class StatisticsInformationCommand : RasterCommand, IRasterCommand 
C++/CLI 
public ref class StatisticsInformationCommand : public RasterCommand, IRasterCommand 

Example

Run the StatisticsInformationCommand on an image.

Visual BasicCopy Code
Public Sub StatisticsInformationCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As StatisticsInformationCommand = New StatisticsInformationCommand
   command.Channel = RasterColorChannel.Master
   command.Start = 0
   command.End = 255
   'Get statistical image information.
   command.Run(leadImage)
   MessageBox.Show("Minimum = " + command.Minimum.ToString + Chr(13) + _
      "Maximum = " + command.Maximum.ToString + Chr(13) + _
      "Mean = " + command.Mean.ToString + Chr(13) + _
      "Median = " + command.Median.ToString + Chr(13) + _
      "Percent = " + command.Percent.ToString + Chr(13) + _
      "PixelCount = " + command.PixelCount.ToString + Chr(13) + _
      "StandardDeviation = " + command.StandardDeviation.ToString + Chr(13) + _
      "TotalPixelCount = " + command.TotalPixelCount.ToString)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void StatisticsInformationCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   StatisticsInformationCommand command = new StatisticsInformationCommand(); 
   command.Channel = RasterColorChannel.Master; 
   command.Start   = 0; 
   command.End    = 255; 
   //Get statistical image information. 
   command.Run(image); 
   MessageBox.Show("Minimum = " + command.Minimum + "\n" + 
      "Maximum = " + command.Maximum + "\n" + 
      "Mean = " + command.Mean + "\n" + 
      "Median = " + command.Median + "\n" + 
      "Percent = " + command.Percent + "\n" + 
      "PixelCount = " + command.PixelCount + "\n" + 
      "StandardDeviation = " + command.StandardDeviation + "\n" + 
      "TotalPixelCount = " + command.TotalPixelCount); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • This command calculates statistical information about the image.
  • The start and end values designate the range of colors that will be taken in consideration for producing the results. Only the values between Start and End are used for the calculation of the results. The range of each one depends on the bits per pixel of the image: in the case of 8 bits per component (RGB), the range is between 0 and 255; for 16 bits, the range is 0 through 65535;and from -32768 to 32767 for signed images; and for 12 bits, the range is 0 through 4095.
  • This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This command support signed data images.
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.StatisticsInformationCommand

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also