pdfsandwich

Description

pdfsandwich generates "sandwich" OCR pdf files, i.e. pdf files which contain only images (no text) will be processed by optical character recognition (OCR) and the text will be added to each page invisibly "behind" the images. pdfsandwich is a command line tool which is supposed to be useful to OCR scanned books or journals.

It is able to recognize the page layout even for multicolumn text.

Essentially, pdfsandwich is a wrapper script which calls the following binaries: convert, unpaper, gs (only for psd resizing), hocr2pdf (for tesseract < 3.03), and tesseract.

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Homepage

http://www.tobias-elze.de/pdfsandwich/index.html

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Install this software package

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