Recognize(RecognizeRequest) Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

[OperationContractAttribute("Recognize")]
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
RecognizeResponse Recognize( 
   RecognizeRequest request
)

'Declaration
 
<OperationContractAttribute("Recognize")>
<FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=False)>
Overloads Function Recognize( _
   ByVal request As RecognizeRequest _
) As RecognizeResponse

'Usage
 
Dim instance As IOcrService
Dim request As RecognizeRequest
Dim value As RecognizeResponse
 
value = instance.Recognize(request)

[OperationContractAttribute("Recognize")]
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
RecognizeResponse Recognize( 
   RecognizeRequest request
)

OperationContractAttribute("Recognize")
FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=)
function Leadtools.Services.Forms.ServiceContracts.IOcrService.Recognize(RecognizeRequest)( 
   request 
)

[OperationContractAttribute("Recognize")]
[FaultContractAttribute(DetailType=Leadtools.Services.Raster.FaultContracts.RasterFault, 
   Action="", 
   Name="", 
   Namespace="", 
   ProtectionLevel=ProtectionLevel.None, 
   HasProtectionLevel=false)]
RecognizeResponse^ Recognize( 
   RecognizeRequest^ request
)

Parameters

request: A System.Runtime.Serialization.DataContractAttribute containing the data that will be used for this Recognize(RecognizeRequest) operation.

Return Value

A System.Runtime.Serialization.DataContractAttribute containing the document data resulting from the Recognize(RecognizeRequest) operation.

This method is supported when hosting is done using WebHttpBinding.

The LEADTOOLS OCR engines provide support for recognizing document zones in separate threads. This can improve the performance of the recognition process. Control the number of threads through Leadtools.Services.Forms.ServiceImplementations.dll.config by setting the value for MaximumRecognitionThreads to one of the following:

A value of 0 (zero) instructs LEADTOOLS to use the maximum number of threads equal to the number of cores available in the current machine.
A value of 1, 2, 3, 4, etc. instructs LEADTOOLS to use that maximum number of threads equal to that number.
A value of 1 instructs LEADTOOLS not to use multi-threading
Leave the value of this property at the default value of 1 in WCF applications.

Also LEADTOOLS OCR engines provide support for auto-zoning in separate threads. This can improve the performance of the recognition process. Disable and enable this option through Leadtools.Services.Forms.ServiceImplementations.dll.config by setting the value for EnableMultiThreadingZoning to one of the following:

use multi-threading when performing auto-zoning
don't use multi-threading when performing auto-zoning
Leave the value of this property to the default value of false in WCF applications.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub DocumentConvertOptionsExample()
      Dim client As OcrServiceClient = New OcrServiceClient()
      Dim sourceBinaryData As RawBinaryData = New RawBinaryData()
      sourceBinaryData.Data = File.ReadAllBytes(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif"))

      ' set the document convertion options
      Dim convertOptions As DocumentConvertOptions = New DocumentConvertOptions()

      convertOptions.Source = sourceBinaryData
      convertOptions.Destination = Nothing
      convertOptions.Format = OcrDocumentFormatType.TextAnsi
      convertOptions.FirstPageNumber = 1
      convertOptions.LastPageNumber = 1
      Dim files As DocumentFiles = Nothing

      Dim request As RecognizeRequest = New RecognizeRequest()
      request.ConvertOptions = convertOptions

      Dim response As RecognizeResponse = client.Recognize(request)

      If Not response.Destination Is Nothing Then
         If TypeOf response.Destination Is RawBinaryData Then
            File.WriteAllBytes(Path.Combine(LEAD_VARS.ImagesDir, "clean.txt"), (TryCast(response.Destination, RawBinaryData)).Data)
         End If
      End If

      client.Close()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void DocumentConvertOptionsExample()
   {
      OcrServiceClient client = new OcrServiceClient();
      RawBinaryData sourceBinaryData = new RawBinaryData();
      sourceBinaryData.Data = File.ReadAllBytes(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif"));

      // set the document convertion options
      DocumentConvertOptions convertOptions = new DocumentConvertOptions();

      convertOptions.Source = sourceBinaryData;
      convertOptions.Destination = null;
      convertOptions.Format = OcrDocumentFormatType.TextAnsi;
      convertOptions.FirstPageNumber = 1;
      convertOptions.LastPageNumber = 1;
      DocumentFiles files = null;

      RecognizeRequest request = new RecognizeRequest();
      request.ConvertOptions = convertOptions;

      RecognizeResponse response = client.Recognize(request);

      if (response.Destination != null)
      {
         if(response.Destination is RawBinaryData)
            File.WriteAllBytes(Path.Combine(LEAD_VARS.ImagesDir,"clean.txt"), (response.Destination as RawBinaryData).Data);
      }

      client.Close();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IOcrService Interface
IOcrService Members
Overload List