Leptonica is a pedagogically-oriented open source site containing software that is broadly useful for image processing and image analysis applications.
# wget http://www.leptonica.org/source/leptonica-1.79.0.tar.gz .
# tar -zxvf leptonica-1.79.0.tar.gz
# cd leptonica-1.79.0
# ./configure --prefix=/usr/local/leptonica-1.79.0
# make
# make install
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