ByteScout Premium Suite – C# – OCR Analyser with PDF Extractor SDK

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ByteScout Premium Suite – C# – OCR Analyser with PDF Extractor SDK

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ByteScout-Premium-Suite-C-sharp-OCR-Analyser-with-PDF-Extractor-SDK.pdf

OCR analyser with PDF extractor SDK in C# using ByteScout Premium Suite

Learn to code in C# to make OCR analyser with PDF extractor SDK with this simple How-To tutorial

The example source codes on this page will display you how to make OCR analyser with PDF extractor SDK in C#. ByteScout Premium Suite was created to assist OCR analyser with PDF extractor SDK in C#. ByteScout Premium Suite is the set that includes 12 SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording.

C# code snippet like this for ByteScout Premium Suite works best when you need to quickly implement OCR analyser with PDF extractor SDK in your C# application. Follow the steps-by-step instructions from the scratch to work and copy and paste code for C# into your editor. Further improvement of the code will make it more robust.

Our website gives free trial version of ByteScout Premium Suite. It includes all these source code samples with the purpose to assist you with your C# application implementation.

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Program.cs

      using System;
using System.Drawing;
using System.Diagnostics;
using Bytescout.PDFExtractor;

// This example demonstrates the use of OCR Analyser - a tooling class for analysis of scanned documents
// in PDF or raster image formats to find best parameters for Optical Character Recognition (OCR) that
// provide highest recognition quality.

// To make OCR work you should add the following references to your project:
// 'Bytescout.PDFExtractor.dll', 'Bytescout.PDFExtractor.OCRExtension.dll'.

namespace OCRAnalyser
{
    class Program
    {
        static void Main(string[] args)
        {
            // Input document
            string inputDocument = @".\sample_ocr.pdf";
            
            // Document page index
            int pageIndex = 0;
            
            // Area of the document page to perform the analysis (optional).
            // RectangleF.Empty means the full page.
            RectangleF rectangle = RectangleF.Empty; // new RectangleF(100, 50, 350, 250);

            // Location of language data files
            string ocrLanguageDataFolder = @"c:\Program Files\Bytescout PDF Extractor SDK\ocrdata_best\";

            // OCR language
            string ocrLanguage = "eng"; // "eng" for english, "deu" for German, "fra" for French, "spa" for Spanish etc - according to files in "ocrdata" folder
            // Find more language files at https://github.com/bytescout/ocrdata


            // Create OCRAnalyzer instance and activate it with your registration information
            using (OCRAnalyzer ocrAnalyzer = new OCRAnalyzer("demo", "demo"))
            {
                // Display analysis progress
                ocrAnalyzer.ProgressChanged += (object sender, string message, double progress, ref bool cancel) =>
                {
                    Console.WriteLine(message);
                };

                // Load document to OCRAnalyzer
                ocrAnalyzer.LoadDocumentFromFile(inputDocument);

                // Setup OCRAnalyzer
                ocrAnalyzer.OCRLanguage = ocrLanguage;
                ocrAnalyzer.OCRLanguageDataFolder = ocrLanguageDataFolder;
                
                // Set page area for analysis (optional)
                ocrAnalyzer.SetExtractionArea(rectangle);
                
                // Perform analysis and get results
                OCRAnalysisResults analysisResults = ocrAnalyzer.AnalyzeByOCRConfidence(pageIndex);


                // Now extract the text using detected OCR parameters

                string outputDocument = @".\result.txt";
                
                // Create TextExtractor instance
                using (TextExtractor textExtractor = new TextExtractor("demo", "demo"))
                {
                    // Load document to TextExtractor
                    textExtractor.LoadDocumentFromFile(inputDocument);

                    // Setup TextExtractor
                    textExtractor.OCRMode = OCRMode.Auto;
                    textExtractor.OCRLanguageDataFolder = ocrLanguageDataFolder;
                    textExtractor.OCRLanguage = ocrLanguage;

                    // Apply analysis results to TextExtractor instance
                    ocrAnalyzer.ApplyResults(analysisResults, textExtractor);

                    // Set extraction area (optional)
                    textExtractor.SetExtractionArea(rectangle);

                    // Save extracted text to file
                    textExtractor.SaveTextToFile(outputDocument);

                    // Open result document in default associated application (for demo purpose)
                    ProcessStartInfo processStartInfo = new ProcessStartInfo(outputDocument);
                    processStartInfo.UseShellExecute = true;
                    Process.Start(processStartInfo);
                }
            }
        }
    }
}