How to setup unoconv in Ubuntu Lucid

If you want to convert between any document format that OpenOffice understands especially for non-interactive conversion of documents.

You will need openoffice.org:
# apt-get install openoffice.org
# apt-get install openoffice.org-writer2latex

Install unoconv:
# apt-get install unoconv

Running unoconv:
# unoconv --listener &

Test:
# unoconv -f pdf myfile.ppt

Done.

How to set up tesseract-ocr from Google

You need the following library (Ubuntu):

# apt-get install libpng12-dev
# apt-get install libjpeg62-dev
# apt-get install libtiff4-dev
# apt-get install zlib1g-dev

Set up leptonica:

# wget http://www.leptonica.com/source/leptonlib-1.67.tar.gz
# tar xfz leptonlib-1.67.tar.gz
# cd leptonlib-1.67
# ./configure
# make
# make install

Setup tesseract-ocr (version 3.0):

# svn checkout http://tesseract-ocr.googlecode.com/svn/trunk/ tesseract
# cd tesseract
# ./configure
# make
# make install
# ldconfig -v

Testing tesseract-ocr:

# tesseract eurotext.tiff result

Check result:

# cat result.txt

Done.