HOW TO: Extract All Text from a File Using the RecognitionEngine

#1 Posted : Monday, December 4, 2017 10:40:25 AM(UTC)

Duncan Quirk

Groups: Registered, Tech Support, Administrators
Posts: 70

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The LEADTOOLS CloudServices RecognitionEngine interface provides a high-level method to extract all text from a file. The ExtractText method will pull the text from each page in the range specified in the LoadDocumentOptions. This method will return an enumerable list of DocumentPageText classes.

Code:


        var inputStream = File.Open(@"leadtools.pdf", FileMode.Open);
         LoadDocumentOptions loadOptions = new LoadDocumentOptions()
         {
            FirstPageNumber = 1,
            LastPageNumber = 1
         };

         RecognitionEngine recognitionEngine = new RecognitionEngine();
         IOcrEngine engine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, false);
         engine.Startup(null, null, null, @"path/to/OCR Bin Directory");

         var textList = recognitionEngine.ExtractText(inputStream, loadOptions, engine, null);
         foreach(var pageText in textList)
         {
            //Process text
         }

DocumentPageText Class: https://www.leadtools.co...ox/documentpagetext.html

Edited by user Friday, December 29, 2017 4:24:31 PM(UTC) | Reason: Not specified

Duncan Quirk
Developer Support Engineer
LEAD Technologies, Inc.

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HOW TO: Extract All Text from a File Using the RecognitionEngine