ByteScout Data Extraction Suite – VB.NET – Ocr analyser in pdf with pdf extractor sdk

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ByteScout Data Extraction Suite – VB.NET – Ocr analyser in pdf with pdf extractor sdk

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ByteScout-Data-Extraction-Suite-VB-NET-Ocr-analyser-in-pdf-with-pdf-extractor-sdk.pdf

ocr analyser in pdf with pdf extractor sdk in VB.NET and ByteScout Data Extraction Suite

How to apply ByteScout Data Extraction Suite for ocr analyser in pdf with pdf extractor sdk in VB.NET

The example source codes on this page will display you how to make ocr analyser in pdf with pdf extractor sdk in VB.NET. ByteScout Data Extraction Suite was created to assist ocr analyser in pdf with pdf extractor sdk in VB.NET. ByteScout Data Extraction Suite is the set that includes 3 SDK products for data extraction from PDF, scans, images and from spreadsheets: PDF Extractor SDK, Data Extraction SDK, Barcode Reader SDK.

VB.NET code snippet like this for ByteScout Data Extraction Suite works best when you need to quickly implement ocr analyser in pdf with pdf extractor sdk in your VB.NET application. Follow the steps-by-step instructions from the scratch to work and copy and paste code for VB.NET into your editor. Check these VB.NET sample code examples to see if they acknowledge to your needs and requirements for the project.

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Program.vb

      Imports System.Drawing
Imports 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'.

Class Program

    Friend Shared Sub Main(args As String())

        ' Input document
        Dim inputDocument As String = ".\sample_ocr.pdf"

        ' Document page index
        Dim pageIndex As Integer = 0

        ' Area of the document page to perform the analysis (optional).
        ' RectangleF.Empty means the full page.
        Dim rectangle As RectangleF = RectangleF.Empty ' New RectangleF(100, 50, 350, 250)

        ' Location of OCR language data files
        Dim ocrLanguageDataFolder As String = "c:\Program Files\Bytescout PDF Extractor SDK\ocrdata_best\"

        ' OCR language
        Dim ocrLanguage As String = "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/tree/master/ocrdata_best


        ' Create OCRAnalyzer instance and activate it with your registration information
        Using ocrAnalyzer As New OCRAnalyzer("demo", "demo")

            ' Display analysis progress
            AddHandler ocrAnalyzer.ProgressChanged, Sub(sender, message, progress, ByRef cancel)
                                                        Console.WriteLine(message)
                                                    End Sub

            ' 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
            Dim analysisResults As OCRAnalysisResults = ocrAnalyzer.AnalyzeByOCRConfidence(pageIndex)


            ' Now extract page text using detected OCR parameters

            Dim outputDocument As String = ".\result.txt"

            ' Create TextExtractor instance
            Using textExtractor As 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 analysys results to TextExtractor instance
                ocrAnalyzer.ApplyResults(analysisResults, textExtractor)

                ' Set extraction area (optional)
                textExtractor.SetExtractionArea(rectangle)

                ' Save extracted text to file
                textExtractor.SaveTextToFile(outputDocument)

                ' Open output file in default associated application (for demonstration purposes)
                System.Diagnostics.Process.Start(outputDocument)

            End Using

        End Using

    End Sub
    
End Class