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



request
A DataContractAttribute containing the data that will be used in this Despeckle operation.
request
A DataContractAttribute containing the data that will be used in this Despeckle operation.
Removes speckles from an image. Typically, this operation is used to clean up scanned images (such as FAX images). This operation is available in the Document/Medical Toolkits.

Syntax

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

Parameters

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

Return Value

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

Example

Visual BasicCopy Code
Public Sub DespeckleExample()
   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 DespeckleRequest = New DespeckleRequest()

   request.ConvertOptions = convertOptions
   request.RegionData = Nothing

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

   client.Close()
End Sub
C#Copy Code
public void DespeckleExample() 
{ 
   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; 
 
   DespeckleRequest request = new DespeckleRequest(); 
 
   request.ConvertOptions = convertOptions; 
   request.RegionData = null; 
 
   CommandResponse response = client.Despeckle(request); 
   if (response.Destination != null) 
   { 
      if (response.Destination is RawBinaryData) 
         File.WriteAllBytes(LeadtoolsExamples.Common.ImagesPath.Path + "Despeckle.bmp", (response.Destination as RawBinaryData).Data); 
   } 
 
   client.Close(); 
}

Remarks

  • This operation removes 1-pixel speckles, and shrinks some larger speckles. Therefore, in some cases, larger speckles can be completely removed by running it more than once.
  • This operation supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This operation does not support 32-bit grayscale images.
For more information, refer to Removing Noise.

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