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 DirectionEdgeStatisticalCommand(dimension, threshold, angle, edgeColor, backGroundColor)

public DirectionEdgeStatisticalCommand( 
   int dimension,
   int threshold,
   int angle,
   RasterColor edgeColor,
   RasterColor backGroundColor
)

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.

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

Visual Basic

Copy Code

Public Sub DirectionEdgeStatisticalConstructorExample()    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 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, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)    RasterCodecs.Shutdown() End Sub

C#

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public void DirectionEdgeStatisticalConstructorExample()  {     // 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     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, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24);       RasterCodecs.Shutdown();  }

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

Reference