Initializes a new BorderRemoveCommand class object with explicit parameters.
Syntax
Parameters
- flags
- Flag that determines the behavior of the border removal process.
- border
- Flag that indicates which border to remove.
- percent
- Percent of the image dimension in which the border will be found. For most images, use 20.
For example, if an image is 200 pixels wide, Percent is set to 20 and Border is set to BorderRemoveBorderFlags.Left,
then the left border will be found in the area between the left edge of the image and a line 40 pixels from the left edge.
If the border is closer to the edge of the image, use a smaller value. If the border is farther from the edge,
use a larger value.
- whiteNoiseLength
- Amount of white noise tolerated when determining the border. The units are in pixels.
Values of 0 to 10 are sufficient for most images.
- variance
- Amount of variance tolerated in the border. If the border varies significantly in thickness,
you should use a higher value for Variance. Range is 0 to 10.
Example
Run the BorderRemoveCommand on an image.
Visual Basic | Copy Code |
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Public WithEvents borderRemoveConstructorCallback As BorderRemoveCommand
Public Sub BorderRemoveConstructorExample()
RasterCodecs.Startup()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Clean.tif")
borderRemoveConstructorCallback = New BorderRemoveCommand(BorderRemoveCommandFlags.UseVariance Or BorderRemoveCommandFlags.CallBackRegion, BorderRemoveBorderFlags.All, 20, 9, 3)
borderRemoveConstructorCallback.Run(leadImage)
RasterCodecs.Shutdown()
End Sub
Private Sub BorderRemoveCommand_BorderRemove_S2(ByVal sender As Object, ByVal e As BorderRemoveCommandEventArgs) Handles borderRemoveConstructorCallback.BorderRemove
Dim ee As BorderRemoveCommandEventArgs = New BorderRemoveCommandEventArgs(e.Image, e.Region, BorderRemoveBorderFlags.All, e.BoundingRectangle)
e.Status = RemoveStatus.NoRemove
If Not (e.Region Is Nothing) Then
e.Image.AddGdiPlusRegionToRegion(Nothing, e.Region, RasterRegionCombineMode.Set)
Dim command As InvertCommand = New InvertCommand
command.Run(e.Image)
e.Image.MakeRegionEmpty()
End If
End Sub |
C# | Copy Code |
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public void BorderRemoveConstructorExample() { // Load an image RasterCodecs.Startup(); RasterCodecs codecs = new RasterCodecs(); codecs.ThrowExceptionsOnInvalidImages = true; RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Clean.tif"); // Prepare the command BorderRemoveCommand command = new BorderRemoveCommand( BorderRemoveCommandFlags.UseVariance | BorderRemoveCommandFlags.CallBackRegion, BorderRemoveBorderFlags.All, 20, 9, 3); command.BorderRemove += new EventHandler<BorderRemoveCommandEventArgs>(command_BorderRemove_S2); command.Run(image); RasterCodecs.Shutdown(); } private void command_BorderRemove_S2(object sender, BorderRemoveCommandEventArgs e) { BorderRemoveCommandEventArgs ee = new BorderRemoveCommandEventArgs(e.Image, e.Region, BorderRemoveBorderFlags.All, e.BoundingRectangle); e.Status = RemoveStatus.NoRemove; if(e.Region != null) { e.Image.AddGdiPlusRegionToRegion(null, e.Region, RasterRegionCombineMode.Set); InvertCommand command = new InvertCommand(); command.Run(e.Image); e.Image.MakeRegionEmpty(); } } |
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