Is this possible to Extract Text from Scanned PDF Documents and Images in asp.net

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C#

ASP.NET

Is this possible to Extract Text from Scanned PDF Documents and Images in asp.net? If yes Please help me

Posted 20-Aug-11 0:47am

anjali2

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3 solutions

Solution 3

I agree with Simon: if the PDF is a scanned image, you will need OCR, which is not easy.

Please see my advice on OCR in my past solution OCR Software[^].

Good luck,

—SA

Posted 21-Aug-11 16:57pm

Sergey Alexandrovich Kryukov

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thatraja 23-Aug-11 0:31am

5!

Sergey Alexandrovich Kryukov 23-Aug-11 7:57am

Thank you, Raja.
--SA

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Simon Bang Terkildsen · Accepted Answer · 2011-08-20T01:01:00

Solution 1

to get text from a pdf look into ITextSharp have a look at Converting PDF to Text in C#[^]

to extract text from an image you need to do OCR have a look at google tesseract[^] Traceract[^]

Posted 20-Aug-11 1:01am

Simon Bang Terkildsen

Comments

anjali2 20-Aug-11 7:07am

Thanks for your reply But,
ITextSharp convert only text from PDF document but I have a scanned PDF Document

Simon Bang Terkildsen 20-Aug-11 7:22am

What's the difference? well I suppose your scanned PDF document contains images, in that case you need to extract the images and then you're back to OCR.

RaisKazi 20-Aug-11 8:46am

My 5 for accurate direction.

Sergey Alexandrovich Kryukov 21-Aug-11 22:58pm

Agree, my 5.
Please see my solution; some useful advice on OCR.
--SA

thatraja 23-Aug-11 0:31am

5!

RaisKazi · Accepted Answer · 2011-08-20T02:45:00

Solution 2

Yes Agree with Simon's comments in Solution-1. This requirement is related to OCR - "Optical Character Recognition".

You can use below Microsoft's SDK for this.

Microsoft Office Document Imaging -
http://social.technet.microsoft.com/Forums/en-US/officeappcompat/thread/93d6f285-dc98-46e2-b7e0-872bba9c4e35/[^]

I had evaluated several Third Party OCR SDK's in one of my assignment. In case if you are open for Third Party OCR SDK then search below SDK's on Google.

1) Nuance OmniPage OCR
2) Accusoft SmartZone OCR

Posted 20-Aug-11 2:45am

RaisKazi

v2

Comments

Simon Bang Terkildsen 20-Aug-11 10:03am

I'm not a big fan of the MS Office OCR.
If the OP want a good versatile OCR api then third party is the way to go.
+5

RaisKazi 20-Aug-11 10:09am

Do agree. MS Office OCR has less accracy in comparsion. I found Nuance and Accusoft most accurate amongst the SDK's I had evaluated. By the way "Transym" is also a good OCR SDK.

thatraja 23-Aug-11 0:31am

5!