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OutOfMemoryException with GetTextFromImage on PDF
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Taake  
#1 Posted : Wednesday, June 27, 2018 6:00:36 AM(UTC)
Taake

Rank: Newbie

Groups: Registered
Joined: 6/27/2018(UTC)
Posts: 1
Germany
Location: Dortmund
Hi there,

I receive a System.OutOfMemoryException when trying to read Text from a 2-page PDF file:

My Code:
Code:

Try
            OcrApi.LicenseKey = "xxxxx"

            Dim ocr As OcrApi = OcrApi.Create()
            Dim plaintext As String = ""
            'Dim pix As OcrPix

            ocr.Init(Enums.Languages.German)

            'pix = OcrPix.FromFile(txtFilename.Text)
            plaintext = ocr.GetTextFromImage(txtFilename.Text)

            txtInvoice.Text = plaintext

        Catch ex As Exception
            Debugger.Break()
        End Try


Error occurs when ocr.GetTextFromImage function is called.

Stacktrace:
bei System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement) bei Patagames.Ocr.OcrApi.GetTextFromImage(String filename) bei fuhrmann.invoicereader.Form1.btnReadInvoice_Click(Object sender, EventArgs e) in C:\Users\....

It works when I'm saving the PDF as 2 JPG pages and use an OcrPix object.
Working on a 16gb Ram Win10 Prof. Machine...

Any ideas?
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Paul Rayman  
#2 Posted : Thursday, June 28, 2018 12:56:28 AM(UTC)
Paul Rayman

Rank: Administration

Groups: Administrators
Joined: 1/5/2016(UTC)
Posts: 1,138

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Was thanked: 133 time(s) in 130 post(s)
you may not recognize PDF files directly. Tesseract can process images only.
Please read this article to know how to OCR PDF files.
https://blog.patagames.c...e-pdf-from-scanned-pages
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