Initializes a new DirectionEdgeStatisticalCommand class object with explicit parameters.
Supported in Silverlight, Windows Phone 7
Syntax
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 Basic | Copy Code |
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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 |
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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";
} |
SilverlightCSharp | Copy Code |
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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();
} |
SilverlightVB | Copy Code |
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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