RecognizePage(Uri,int,List<IMasterFormsCategory>) Method

Summary

Recognize the unknown page type.

Syntax

C++/CLI

Java

Python

public AutoFormsRecognizePageResult RecognizePage( 
   Uri url, 
   int pageNumber, 
   List<IMasterFormsCategory> categories 
)

public AutoFormsRecognizePageResult recognizePage( 
   java.net.URI,  
   int,  
   java.util.List<IMasterFormsCategory> 
);

public: 
AutoFormsRecognizePageResult^ RecognizePage(  
   Uri^ url, 
   int pageNumber, 
   List<IMasterFormsCategory^>^ categories 
)

def RecognizePage(self,url,pageNumber,categories):

Parameters

url
A System.Uri containing the name of the unknown form image data.

pageNumber
The unknown page number in the unknown form from url.

categories
List of Master Forms categories to use in comparison, pass null or empty to use all Master Forms in the repository.

Return Value

The result of the recognition will have the result of the Master Form Page with maximum confidence. If the confidence is less than MinimumConfidenceKnownForm it will return null, i.e. the form type is unknown and cannot be recognized.

Remarks

This method compares the unknown page with all Master Forms pages in the repository and returns the Master Form and the number of the page in that Master Form with maximum confidence.

The recognition of the page will stop comparing the form with other Master Forms either when the confidence of the recognition result is greater or equal to MinimumConfidenceRecognized or when the Master Forms have all been compared.

This method is useful when you have an unknown page and you want to recognize the Master Form to which the page belongs after which you may process the form and extract the data.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Forms.Common; 
using Leadtools.Forms.Auto; 
using Leadtools.Document; 
using Leadtools.Ocr; 
using Leadtools.Forms.Recognition; 
using Leadtools.Forms.Processing; 
using Leadtools.Barcode; 
 
 
public void AutoPageRecognitionAndProcessing1Uri() 
{ 
   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)) 
   { 
      ocrEngine.Startup(null, null, null, LEAD_VARS.OcrLEADRuntimeDir); 
 
      BarcodeEngine barcodeEngine = new BarcodeEngine(); 
 
      AutoFormsEngine autoEngine = new AutoFormsEngine(repository, ocrEngine, barcodeEngine); 
      autoEngine.MinimumConfidenceRecognized = autoEngine.GetMinimumRecognizedConfidencePage(); 
 
      Uri url = new Uri(Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Forms to be Recognized\OCR\FCC-107_OCR_Filled.tif")); 
 
      AutoFormsRecognizePageResult result = autoEngine.RecognizePage(url, 1, new AutoFormsEnginePageRecognitionOptions()); 
      if (result == null) 
         return; 
      FormPage pageFields = autoEngine.ProcessPage(url, 1, result); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
   public const string OcrLEADRuntimeDir = @"C:\LEADTOOLS22\Bin\Common\OcrLEADRuntime"; 
}

Requirements

Target Platforms

Reference

AutoFormsEngine Class

AutoFormsEngine Members

Overload List

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Help Version 22.0.2023.3.31

Leadtools.Forms.Auto Assembly

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