GenerateMasterFormAttributes Method


Generate master Form attributes based on the Object Managers set when this AutoFormsEngine object is constructed.

Public Function GenerateMasterFormAttributes( _ 
   ByVal image As RasterImage, _ 
   ByVal name As String, _ 
   ByVal id As Guid, _ 
   ByVal formOptions As FormRecognitionOptions, _ 
   ByVal pagesOptions As List(Of PageRecognitionOptions) _ 
) As FormRecognitionAttributes 
FormRecognitionAttributes^ GenerateMasterFormAttributes(  
   RasterImage^ image, 
   String^ name, 
   Guid id, 
   FormRecognitionOptions^ formOptions, 
   List<PageRecognitionOptions^>^ pagesOptions 


Master form image, it must have all master form page images.

The Master Form name.

The Master Form ID.

Specifies the options for the Master Form.

List of Leadtools.Forms.Recognition.PageRecognitionOptions for all form pages.

Return Value

Returns the Master Forms attributes if the set Object Managers are able to extract its features, otherwise it returns null.


This method is used to create form attributes to the Master Forms (unfilled form). The attributes that are generated using this method cannot be used as a Form attributes.

It returns null if the Object Managers that are set in the constructor are not suitable for this form, i.e. the Master Form does not have any features of the set Object Managers. Try using another Object Manager in order to detect the Master Form features.

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 MasterFormGeneratioAndUpdate() 
   string root = Path.Combine(LEAD_VARS.ImagesDir, @"Forms\FormsDemo\OCR_Test"); 
   RasterCodecs codecs = new RasterCodecs(); 
   //create repository 
   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(); 
      //create AutoForm Engine 
      AutoFormsEngine autoEngine = new AutoFormsEngine(repository, ocrEngine, barcodeEngine, AutoFormsRecognitionManager.Ocr | AutoFormsRecognitionManager.Default); 
      UpdateMasters(repository.RootCategory, autoEngine); 
public void UpdateMasters(IMasterFormsCategory category, AutoFormsEngine autoEngine) 
   foreach (IMasterForm master in category.MasterForms) 
      RasterImage form = master.ReadForm(); 
      FormRecognitionAttributes attributes = autoEngine.GenerateMasterFormAttributes(form, "New" + master.Name, Guid.Empty, null, null); 
      category.AddMasterForm(attributes, master.ReadFields(), form); 
   foreach (IMasterFormsCategory childCategory in category.ChildCategories) 
      UpdateMasters(childCategory, autoEngine); 
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 MasterFormGeneratioAndUpdate() 
   Dim root As String = Path.Combine(LEAD_VARS.ImagesDir, "Forms\FormsDemo\OCR_Test") 
   Dim codecs_Renamed As RasterCodecs = New RasterCodecs() 
   'create repository 
   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() 
      'create AutoForm Engine 
      Dim autoEngine As AutoFormsEngine = New AutoFormsEngine(repository, ocrEngine, engineBarcode, AutoFormsRecognitionManager.Ocr Or AutoFormsRecognitionManager.Default) 
      UpdateMasters(repository.RootCategory, autoEngine) 
   End Using 
End Sub 
Private Sub UpdateMasters(ByVal category As IMasterFormsCategory, ByVal autoEngine As AutoFormsEngine) 
   For Each master As IMasterForm In category.MasterForms 
      Dim form As RasterImage = master.ReadForm() 
      Dim attributes As FormRecognitionAttributes = autoEngine.GenerateMasterFormAttributes(form, "New" & master.Name, Guid.Empty, Nothing, Nothing) 
      category.AddMasterForm(attributes, master.ReadFields(), form) 
   Next master 
   For Each childCategory As IMasterFormsCategory In category.ChildCategories 
      UpdateMasters(childCategory, autoEngine) 
   Next childCategory 
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