Finds and removes dots and specks of various sizes. This method is available in the Document/Medical Toolkits.
public class DotRemoveCommand : RasterCommand
Public Class DotRemoveCommand
Inherits RasterCommand
@interface LTDotRemoveCommand : LTRasterCommand
public class DotRemoveCommand extends RasterCommand
public ref class DotRemoveCommand : public RasterCommand
For more information, refer to Cleaning Up 1-Bit Images.
Run the DotRemoveCommand on an image.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void DotRemoveCommandExample()
{
// Load an image
RasterCodecs codecs = new RasterCodecs();
codecs.ThrowExceptionsOnInvalidImages = true;
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif"));
// Prepare the command
DotRemoveCommand command = new DotRemoveCommand();
command.DotRemove += new EventHandler<DotRemoveCommandEventArgs>(DotRemoveEvent_S1);
command.Flags = DotRemoveCommandFlags.UseSize;
command.MaximumDotHeight = 10;
command.MaximumDotWidth = 10;
command.MinimumDotHeight = 1;
command.MinimumDotWidth = 1;
command.Run(image);
}
private void DotRemoveEvent_S1(object sender, DotRemoveCommandEventArgs e)
{
System.Diagnostics.Debug.WriteLine("Size " + e.BoundingRectangle.Width + e.BoundingRectangle.Height + "Bounds"
+ e.BoundingRectangle.Left + "," + e.BoundingRectangle.Top + "," + e.BoundingRectangle.Right + "," + e.BoundingRectangle.Bottom + ","
+ " WhiteCount" + e.WhiteCount + " BlackCount" + e.BlackCount, "DotRemove Event");
//Do not remove the speck if it contains any white pixels
if (e.WhiteCount > 0)
{
e.Status = RemoveStatus.NoRemove;
}
else
{
e.Status = RemoveStatus.Remove;
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public WithEvents dotRemoveCommandCallback_S1 As DotRemoveCommand
Public Sub DotRemoveCommandExample()
Dim codecs As New RasterCodecs()
codecs.ThrowExceptionsOnInvalidImages = True
Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif"))
' Prepare the command
dotRemoveCommandCallback_S1 = New DotRemoveCommand
dotRemoveCommandCallback_S1.Flags = DotRemoveCommandFlags.UseSize
dotRemoveCommandCallback_S1.MaximumDotHeight = 10
dotRemoveCommandCallback_S1.MaximumDotWidth = 10
dotRemoveCommandCallback_S1.MinimumDotHeight = 1
dotRemoveCommandCallback_S1.MinimumDotWidth = 1
dotRemoveCommandCallback_S1.Run(leadImage)
End Sub
Private Sub DotRemoveCommand_DotRemove_S1(ByVal sender As Object, ByVal e As DotRemoveCommandEventArgs) Handles dotRemoveCommandCallback_S1.DotRemove
System.Diagnostics.Debug.WriteLine("Size " + Convert.ToString(e.BoundingRectangle.Width) + Convert.ToString(e.BoundingRectangle.Height) + "Bounds" _
+ Convert.ToString(e.BoundingRectangle.Left) + "," + Convert.ToString(e.BoundingRectangle.Top) + "," + Convert.ToString(e.BoundingRectangle.Right) + "," + Convert.ToString(e.BoundingRectangle.Bottom) + "," _
+ " WhiteCount" + Convert.ToString(e.WhiteCount) + " BlackCount" + Convert.ToString(e.BlackCount), "DotRemove Event")
'Do not remove the speck if it contains any white pixels
If (e.WhiteCount > 0) Then
e.Status = RemoveStatus.NoRemove
Else
e.Status = RemoveStatus.Remove
End If
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
c#[Silverlight C# Example]
using Leadtools;
using Leadtools.Examples;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void DotRemoveCommandExample(RasterImage image, Stream outStream)
{
// Prepare the command
DotRemoveCommand command = new DotRemoveCommand();
command.DotRemove += new EventHandler<DotRemoveCommandEventArgs>(DotRemoveEvent_S1);
command.Flags = DotRemoveCommandFlags.UseSize;
command.MaximumDotHeight = 10;
command.MaximumDotWidth = 10;
command.MinimumDotHeight = 1;
command.MinimumDotWidth = 1;
command.Run(image);
// Save result image
RasterCodecs codecs = new RasterCodecs();
codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1);
image.Dispose();
}
private void DotRemoveEvent_S1(object sender, DotRemoveCommandEventArgs e)
{
Debug.WriteLine("Size " + e.BoundingRectangle.Width + e.BoundingRectangle.Height + "Bounds"
+ e.BoundingRectangle.Left + "," + e.BoundingRectangle.Top + "," + e.BoundingRectangle.Right + "," + e.BoundingRectangle.Bottom + ","
+ " WhiteCount" + e.WhiteCount + " BlackCount" + e.BlackCount, "DotRemove Event", MessageBoxButton.OK);
//Do not remove the speck if it contains any white pixels
if (e.WhiteCount > 0)
{
e.Status = RemoveStatus.NoRemove;
}
else
{
e.Status = RemoveStatus.Remove;
}
}
vb[Silverlight VB Example]
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub DotRemoveCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
' Prepare the command
Dim command As DotRemoveCommand = New DotRemoveCommand()
AddHandler command.DotRemove, AddressOf DotRemoveEvent_S1
command.Flags = DotRemoveCommandFlags.UseSize
command.MaximumDotHeight = 10
command.MaximumDotWidth = 10
command.MinimumDotHeight = 1
command.MinimumDotWidth = 1
command.Run(image)
' Save result image
Dim codecs As RasterCodecs = New RasterCodecs()
codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1)
image.Dispose()
End Sub
Private Sub DotRemoveEvent_S1(ByVal sender As Object, ByVal e As DotRemoveCommandEventArgs)
Debug.WriteLine("Size " & e.BoundingRectangle.Width + e.BoundingRectangle.Height & "Bounds" & e.BoundingRectangle.Left & "," &
e.BoundingRectangle.Top & "," & e.BoundingRectangle.Right & "," & e.BoundingRectangle.Bottom & "," & " _
WhiteCount" & e.WhiteCount & " BlackCount" & e.BlackCount, "DotRemove Event", MessageBoxButton.OK)
'Do not remove the speck if it contains any white pixels
If e.WhiteCount > 0 Then
e.Status = RemoveStatus.NoRemove
Else
e.Status = RemoveStatus.Remove
End If
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
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