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I have photos/scans of documents in few 10s of known formats. Every document contains some known attributes (date/time, names, and list of items).

Can you please suggest which apps/libs to start with (in Objective)C/C++)? Can OpenCV do that? What about OCR? Layout recognition for OCR?

Thanks!

P.S. Please suggest how to rephrase my post

P.P.S. I have found some promising tool (with examples for iOS): https://code.google.com/p/tesseract-ocr/ and https://github.com/robmathews/OCR-iOS-Example

xvga
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1 Answers1

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To detect where the text is on the page I would recommend using OpenCV to do that, then send the regions of text to tesseract.

Find text:

Erode Image

Find Contours

Get bounding boxes of contours

Those bounding boxes should contain text or logo/picture.

Clip
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  • You may also want to use criteria to reject certain boxes, such as very small ones, or very large. You can do this by checking the area of the contour. – Clip May 08 '14 at 06:15