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DotRemove Method
See Also  Example
Leadtools.Services.ImageProcessing.ServiceContracts Namespace > IDocumentProcessingService Interface : DotRemove Method



request
A DataContractAttribute containing the data that will be used in this DotRemove operation.
request
A DataContractAttribute containing the data that will be used in this DotRemove operation.
Finds and removes dots and specks of various sizes. This method is available in the Document/Medical Toolkits.

Syntax

Visual Basic (Declaration) 
<FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=False)>
<OperationContractAttribute("DotRemove")>
Overridable Function DotRemove( _
   ByVal request As DotRemoveRequest _
) As DocumentResponse
Visual Basic (Usage)Copy Code
Dim instance As IDocumentProcessingService
Dim request As DotRemoveRequest
Dim value As DocumentResponse
 
value = instance.DotRemove(request)
C# 
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=false)]
[OperationContractAttribute("DotRemove")]
virtual DocumentResponse DotRemove( 
   DotRemoveRequest request
)
C++/CLI 
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   HasProtectionLevel=false)]
[OperationContractAttribute("DotRemove")]
virtual DocumentResponse DotRemove( 
   DotRemoveRequest request
)

Parameters

request
A DataContractAttribute containing the data that will be used in this DotRemove operation.

Return Value

A DataContractAttribute containing the modified image resulting from the DotRemove operation.

Example

Visual BasicCopy Code
Public Sub DotRemoveExample()
   Dim client As DocumentProcessingServiceClient = New DocumentProcessingServiceClient()
   Dim sourceBinaryData As RawBinaryData = New RawBinaryData()
   sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "clean.tif")

   Dim convertOptions As RasterConvertOptions = New RasterConvertOptions()

   convertOptions.Source = sourceBinaryData
   convertOptions.Destination = Nothing
   convertOptions.Format = RasterImageFormat.Bmp
   convertOptions.FirstPage = 1
   convertOptions.LastPage = 1
   convertOptions.BitsPerPixel = 24
   convertOptions.QualityFactor = 2

   Dim request As DotRemoveRequest = New DotRemoveRequest()

   request.ConvertOptions = convertOptions
   request.RegionData = Nothing
   request.Flags = DotRemoveCommandFlags.GetRegion Or DotRemoveCommandFlags.UseSize
   request.MinimumDotWidth = 1
   request.MinimumDotHeight = 1
   request.MaximumDotWidth = 10
   request.MaximumDotHeight = 10

   Dim response As DocumentResponse = client.DotRemove(request)
   If Not response.Destination Is Nothing Then
      If TypeOf response.Destination Is RawBinaryData Then
         File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path & "DotRemove.bmp", (TryCast(response.Destination, RawBinaryData)).Data)
      End If
   End If

   If Not response.Region Is Nothing Then
      Dim bitmap As Bitmap = New Bitmap(LeadtoolsExamples.Common.ImagesPath.Path & "DotRemove.bmp")
      Dim graphics As Graphics = graphics.FromImage(bitmap)

      Dim region1 As Region = New Region()
      Dim regionData As RegionData = region1.GetRegionData()
      regionData.Data = response.Region.Data

      Dim region2 As Region = New Region(regionData)

      graphics.FillRegion(Brushes.Red, region2)

      bitmap.Save(LeadtoolsExamples.Common.ImagesPath.Path & "DotRemoveRegion.bmp")

      region2.Dispose()
      region1.Dispose()
      bitmap.Dispose()
      graphics.Dispose()
   End If

   client.Close()
End Sub
C#Copy Code
public void DotRemoveExample() 
{ 
   DocumentProcessingServiceClient client = new DocumentProcessingServiceClient(); 
   RawBinaryData sourceBinaryData = new RawBinaryData(); 
   sourceBinaryData.Data = File.ReadAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "clean.tif"); 
 
   RasterConvertOptions convertOptions = new RasterConvertOptions(); 
 
   convertOptions.Source = sourceBinaryData; 
   convertOptions.Destination = null; 
   convertOptions.Format = RasterImageFormat.Bmp; 
   convertOptions.FirstPage = 1; 
   convertOptions.LastPage = 1; 
   convertOptions.BitsPerPixel = 24; 
   convertOptions.QualityFactor = 2; 
 
   DotRemoveRequest request = new DotRemoveRequest(); 
 
   request.ConvertOptions = convertOptions; 
   request.RegionData = null; 
   request.Flags = DotRemoveCommandFlags.GetRegion | DotRemoveCommandFlags.UseSize; 
   request.MinimumDotWidth = 1; 
   request.MinimumDotHeight = 1; 
   request.MaximumDotWidth = 10; 
   request.MaximumDotHeight = 10; 
 
   DocumentResponse response = client.DotRemove(request); 
   if (response.Destination != null) 
   { 
      if (response.Destination is RawBinaryData) 
         File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "DotRemove.bmp", (response.Destination as RawBinaryData).Data); 
   } 
 
   if (response.Region != null) 
   { 
      Bitmap bitmap = new Bitmap(LeadtoolsExamples.Common.ImagesPath.Path + "DotRemove.bmp"); 
      Graphics graphics = Graphics.FromImage(bitmap); 
 
      Region region1 = new Region(); 
      RegionData regionData = region1.GetRegionData(); 
      regionData.Data = response.Region.Data; 
 
      Region region2 = new Region(regionData); 
 
      graphics.FillRegion(Brushes.Red, region2); 
 
      bitmap.Save(LeadtoolsExamples.Common.ImagesPath.Path + "DotRemoveRegion.bmp"); 
 
      region2.Dispose(); 
      region1.Dispose(); 
      bitmap.Dispose(); 
      graphics.Dispose(); 
   } 
 
   client.Close(); 
}

Remarks

  • This operation finds and removes dots, specks, and blobs of various sizes in 1-bit documents. The dots, specks, and blobs may or may not be all black.
  • This operation works only on 1-bit black and white images.
  • If a region is selected, only the selected region will be changed by this method. If no region is selected, the whole image will be processed.
  • This operation does not support signed data images.
  • This operation does not support 32-bit grayscale images.
For more information, refer to Cleaning Up 1-Bit Images.

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also

Applications developed with LEADTOOLS WCF components require runtime licenses. Server licensing is required for applications on a server. For more information, refer to: Imaging Pro/Document/Medical Features