C# and OCR

Prasad Kawade

How can I pass highlights image area to Microsoft Office Document Imaging (OCR) and get text output as a result?
Or there is any alternative method to recognize the characters and numbers in image?

4 Replies

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Janat AlJamal6y ago
I know that this is an older post, however for those of you that come accross this post as I did, you can use the leadtools ocr sdk
https://www.leadtools.com/help/leadtools/v20/dh/fo/iocrengine.html

Here is some code showing how to use it:
using (IOcrEngine engine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, false))
{
    engine.Startup(null, null, null, null);

    string tifInput = @"INPUT FILE PATH";
    string pdfOutput = @"OUTPUT FILE PATH";

    using(IOcrDocument document = engine.DocumentManager.CreateDocument())
    {
        IOcrPage ocrPage = document.Pages.AddPage(tifInput, null);
        orcPage.Recognize(null);

        document.Save(pdfOutput, DocumentFormat.Pdf, null);
    }
    ocrEngine.Shutdown();
}
buyi wen11y ago
I'm a c# developer, i always use the this ocr to recognize and scan text from image in c#.net: http://www.xspdf.com/guide-ocr/text-recognition-from-image/
Susanna Moore12y ago
The best program I have come across is the free trial of RE .NET OCR Recognition Library. Guess it may work for you C# application: OCR text from scanned, image-based document files & modify text and images within the scanned document files
Hjalmar Larsson12y ago
Hey Prasad,
There's a good article about using C# with MS Office OCR here:
http://www.codeproject.com/Articles/41709/How-To-Use-Office-2007-OCR-Using-C

However, if you need more control on selecting part of the image and getting only specific text out of it, you might need to use a commercial OCR toolkit, such as the one described here:
http://www.codeproject.com/Articles/317163/OCR-with-LEADTOOLS-The-Better-Choice

Cheers,
Hjalmar