ProcessForm(RasterImage,PageRequestCallback,object,AutoFormsRecognizeFormResult) Method


Performs field processing on the recognized form image.

Public Overloads Function ProcessForm( _ 
   ByVal form As RasterImage, _ 
   ByVal pageRequestCallback As PageRequestCallback, _ 
   ByVal userData As Object, _ 
   ByVal formResult As AutoFormsRecognizeFormResult _ 
) As FormPages 


The recognized Form image.

Page request callback if more form images are needed.

The user defined data that is associated with PageRequestCallback.

The form recognition result that has been returned by RecognizeForm(RasterImage,List<IMasterFormsCategory>).

Return Value

The processed fields if the Master Form has fields, otherwise it returns null.


This method processes the recognized form fields. The Master Form fields are obtained by calling IMasterForm.ReadFields of the AutoFormsRecognizeFormResult.MasterForm.

If form does not have all form page images, during the processing if more pages are required for processing this method will ask for the required pages one page at a time using the pageRequestCallback. The PageRequestCallbackData.FormPageNumber will have the number of the required page, and the user returns the requested page image through PageRequestCallbackData.Page.

If form has all form pages you can set pageRequestCallback to null.

The form alignment is calculated from the recognition results.

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 AutoFormRecognitionAndProcessing2() 
   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 = 80; 
      //load all form pages 
      RasterImage form = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Images\FCC-107_OCR_Filled.tif"), 1, CodecsLoadByteOrder.Bgr, 1, -1); 
      AutoFormsRecognizeFormResult result = autoEngine.RecognizeForm(form, null); 
      if (result == null) 
      FormPages formFields = autoEngine.ProcessForm(form, null, null, result); 
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 AutoFormRecognitionAndProcessing2() 
   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 = 80 
      'load all form pages 
      Dim form As RasterImage = codecs_Renamed.Load(Path.Combine(LEAD_VARS.ImagesDir, "Forms\Images\FCC-107_OCR_Filled.tif"), 1, CodecsLoadByteOrder.Bgr, 1, -1) 
      Dim result As AutoFormsRecognizeFormResult = autoEngine.RecognizeForm(form, Nothing) 
      If result Is Nothing Then 
      End If 
      Dim formFields As FormPages = autoEngine.ProcessForm(form, Nothing, Nothing, result) 
   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 


Target Platforms

Help Version 20.0.2019.9.19
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Leadtools.Forms.Auto Assembly