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Document layout analysis

Wikipedia: document layout analysis.

Document layout is formally defined in the international standard ISO 8613-1:1989 (Open Document Architecture (ODA) and interchange format ).

Layout analysis software

OCRopus – A free document layout analysis and OCR system, implemented in C++ and Python and for FreeBSD, Linux, and Mac OS X. Developed by a German Institute (German Research Centre for Artificial Intelligence in Kaiserslautern) and sponsored by Google.

OCRFeeder – An OCR suite for Linux, written in python, which also supports document layout analysis. This software is actively being developed, and is free and open-source.