Recognize(RecognizeRequest) Method

Visual Basic
C#
Objective-C
Java
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
)

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

Copy Code

Imports Leadtools.Services
Imports Leadtools.Services.Forms.ServiceContracts
Imports Leadtools.Services.Forms.ServiceImplementations
Imports leadtools.services.datacontracts._2009._01
Imports leadtools.services.forms.datacontracts._2009._01

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

using Leadtools.Services;
using Leadtools.Services.Forms.ServiceContracts;
using Leadtools.Services.Forms.ServiceImplementations;
using leadtools.services.datacontracts._2009._01;
using leadtools.services.forms.datacontracts._2009._01;

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

Reference

IOcrService Interface
IOcrService Members
Overload List