ProcessPage(Stream,int,AutoFormsRecognizeFormResult,int) Method

Summary

Performs field processing on the recognized page image.

Syntax
C#
VB
C++
  
Public Overloads Function ProcessPage( _ 
   ByVal stream As Stream, _ 
   ByVal pageNumber As Integer, _ 
   ByVal formResult As AutoFormsRecognizeFormResult, _ 
   ByVal formPageNumber As Integer _ 
) As FormPage 
public: 
FormPage^ ProcessPage(  
   Stream^ stream, 
   int pageNumber, 
   AutoFormsRecognizeFormResult^ formResult, 
   int formPageNumber 
)  

Parameters

stream
A System.IO.Stream containing the recognized page image data.

pageNumber
1-based index of the in stream.

formResult
The recognition result of the form that is returned by RecognizeForm(RasterImage,List<IMasterFormsCategory>).

formPageNumber
The form page number to be processed.

Return Value

The processed fields of the page if they exist, otherwise it returns null.

Remarks

If the specified page does not have processing fields, it returns null.

The alignment to the page is calculated internally from the formResult.

The stream must have all form pages.

Example
C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Forms.Common; 
using Leadtools.Forms.Auto; 
using Leadtools.Ocr; 
using Leadtools.Forms.Recognition; 
using Leadtools.Forms.Processing; 
using Leadtools.Barcode; 
 
public void AutoPageRecognitionAndProcessing3Stream() 
{ 
   string root = Path.Combine(LEAD_VARS.ImagesDir, @"Forms\FormsDemo\OCR_Test"); 
   RasterCodecs codecs = new RasterCodecs(); 
 
   DiskMasterFormsRepository repository = new DiskMasterFormsRepository(codecs, root); 
 
   using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, false)) 
   { 
      ocrEngine.Startup(null, null, null, LEAD_VARS.OcrLEADRuntimeDir); 
 
      BarcodeEngine barcodeEngine = new BarcodeEngine(); 
 
      AutoFormsEngine autoEngine = new AutoFormsEngine(repository, ocrEngine, barcodeEngine); 
      autoEngine.MinimumConfidenceRecognized = autoEngine.GetMinimumRecognizedConfidencePage(); 
 
      FileStream fs = File.OpenRead(Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Images\FCC-107_OCR_Filled.tif")); 
 
      AutoFormsRecognizeFormResult result = autoEngine.RecognizeForm(fs, null); 
      if (result == null) 
         return; 
      // process the first page only 
      FormPage pageFields = autoEngine.ProcessPage(fs, 1, result, 1); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
   public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS 20\Bin\Common\OcrLEADRuntime"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Forms.Common 
Imports Leadtools.Forms.Auto 
Imports Leadtools.Ocr 
Imports Leadtools.Forms.Recognition 
Imports Leadtools.Forms.Processing 
Imports Leadtools.Barcode 
 
Public Sub AutoPageRecognitionAndProcessing3Stream() 
 
   Dim root As String = Path.Combine(LEAD_VARS.ImagesDir, "Forms\FormsDemo\OCR_Test") 
 
   Dim codecs_Renamed As RasterCodecs = New RasterCodecs() 
 
   Dim repository As DiskMasterFormsRepository = New DiskMasterFormsRepository(codecs_Renamed, root) 
 
   Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, False) 
      ocrEngine.Startup(Nothing, Nothing, Nothing, LEAD_VARS.OcrLEADRuntimeDir) 
 
      Dim engineBarcode As BarcodeEngine = New BarcodeEngine() 
 
      Dim autoEngine As AutoFormsEngine = New AutoFormsEngine(repository, ocrEngine, engineBarcode) 
      autoEngine.MinimumConfidenceRecognized = autoEngine.GetMinimumRecognizedConfidencePage() 
 
      Dim fs As FileStream = File.OpenRead(Path.Combine(LEAD_VARS.ImagesDir, "Forms\Images\FCC-107_OCR_Filled.tif")) 
 
      Dim result As AutoFormsRecognizeFormResult = autoEngine.RecognizeForm(fs, Nothing) 
      If result Is Nothing Then 
         Return 
      End If 
      ' process the first page only 
      Dim pageFields As FormPage = autoEngine.ProcessPage(fs, 1, result, 1) 
   End Using 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
   Public Const OcrLEADRuntimeDir As String = "C:\LEADTOOLS 20\Bin\Common\OcrLEADRuntime" 
End Class 

Requirements

Target Platforms

Help Version 20.0.2019.9.19
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Leadtools.Forms.Auto Assembly