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DirectionEdgeStatisticalCommand Constructor(Int32,Int32,Int32,RasterColor,RasterColor)
See Also  Example
Leadtools.ImageProcessing.Effects Namespace > DirectionEdgeStatisticalCommand Class > DirectionEdgeStatisticalCommand Constructor : DirectionEdgeStatisticalCommand Constructor(Int32,Int32,Int32,RasterColor,RasterColor)



dimension
The dimension or the number of pixels used to calculate the edge in the specified direction, This parameter only accepts positive values.
threshold
Threshold value used to determine which pixels are edge pixels. If the difference in the intensity value between the pixel being tested and the average intensity of the pixels in the area specified in the dimension parameter around it is greater than this value, the pixel is an edge pixel. The threshold range for the 16, 48, and 64-bit images is from 0 to 65535 and for 12-bit images from 0 to 4095. Otherwise, it is from 0 to 255. The threshold is applied on channels separately.
angle
Value that represents the edge detector direction, in hundredths of degrees. Valid values range from -18000 through 18000. Positive values are produced by counterclockwise rotation above the horizon and negative values are produced by clockwise rotation below the horizon. This value is divided internally by 100.
edgeColor
Edge color.
backGroundColor
Non edge color.
Initializes a new DirectionEdgeStatisticalCommand class object with explicit parameters. Supported in Silverlight, Windows Phone 7

Syntax

Visual Basic (Declaration) 
Public Function New( _
   ByVal dimension As Integer, _
   ByVal threshold As Integer, _
   ByVal angle As Integer, _
   ByVal edgeColor As RasterColor, _
   ByVal backGroundColor As RasterColor _
)
Visual Basic (Usage)Copy Code
Dim dimension As Integer
Dim threshold As Integer
Dim angle As Integer
Dim edgeColor As RasterColor
Dim backGroundColor As RasterColor
 
Dim instance As New DirectionEdgeStatisticalCommand(dimension, threshold, angle, edgeColor, backGroundColor)
C# 
public DirectionEdgeStatisticalCommand( 
   int dimension,
   int threshold,
   int angle,
   RasterColor edgeColor,
   RasterColor backGroundColor
)
C++/CLI 
public:
DirectionEdgeStatisticalCommand( 
   int dimension,
   int threshold,
   int angle,
   RasterColor edgeColor,
   RasterColor backGroundColor
)

Parameters

dimension
The dimension or the number of pixels used to calculate the edge in the specified direction, This parameter only accepts positive values.
threshold
Threshold value used to determine which pixels are edge pixels. If the difference in the intensity value between the pixel being tested and the average intensity of the pixels in the area specified in the dimension parameter around it is greater than this value, the pixel is an edge pixel. The threshold range for the 16, 48, and 64-bit images is from 0 to 65535 and for 12-bit images from 0 to 4095. Otherwise, it is from 0 to 255. The threshold is applied on channels separately.
angle
Value that represents the edge detector direction, in hundredths of degrees. Valid values range from -18000 through 18000. Positive values are produced by counterclockwise rotation above the horizon and negative values are produced by clockwise rotation below the horizon. This value is divided internally by 100.
edgeColor
Edge color.
backGroundColor
Non edge color.

Example

Run the DirectionEdgeStatisticalCommand on an image, to find it is edges.

Visual BasicCopy Code
Public Sub DirectionEdgeStatisticalConstructorExample()
   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 DirectionEdgeStatisticalCommand = New DirectionEdgeStatisticalCommand(20, 128, 3000, New RasterColor(255, 255, 255), New RasterColor(0, 0, 0))
   ' Find the edges in the image.
   command.Run(leadImage)
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24)

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 DirectionEdgeStatisticalConstructorExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      DirectionEdgeStatisticalCommand command = new DirectionEdgeStatisticalCommand(20, 128, 3000, new RasterColor(255, 255, 255), new RasterColor(0, 0, 0));
      // Find the edges in the image.
      command.Run(image);
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void DirectionEdgeStatisticalConstructorExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   DirectionEdgeStatisticalCommand command = new DirectionEdgeStatisticalCommand(20, 128, 3000, new RasterColor(255, 255, 255), new RasterColor(0, 0, 0));
   // Find the edges in the image.
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub DirectionEdgeStatisticalConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As DirectionEdgeStatisticalCommand = New DirectionEdgeStatisticalCommand(20, 128, 3000, New RasterColor(255, 255, 255), New RasterColor(0, 0, 0))
   ' Find the edges in the image.
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Requirements

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also