tips-OCR
Open source OCR
google-tesseract
https://github.com/tesseract-ocr/tesseract
https://github.com/tesseract-ocr
NHocr
https://ja.osdn.net/projects/nhocr/
INSTALL
zypper install leptonica ## zypper install tesseract-ocr tesseract-ocr-devel zypper install libtesseract3 tesseract-ocr tesseract-ocr-traineddata-english, tesseract-ocr-traineddata-japanese pip3.6 install pyocr :: PYTHON で呼び出す為；；
# install wget tesseract-4.0.0.tar.gz tar xvfz tesseract-4.0.0.tar.gz cd tesseract-4.0.0 ./autogen.sh ./configure --prefix=$HOME/opt/tess make make install make check CPPFLAGS="-I$HOME/opt/includ -L$HOME/opt/lib64" pip3.7 install tesserocr
ToDO
https://qiita.com/atuyosi/items/c0933b5edf605c4a7c19
https://qiita.com/bohemian916/items/67f22ee7aeac103dd205
http://hadashi-gensan.hatenablog.com/entry/2013/10/14/170129
http://hadashi-gensan.hatenablog.com/entry/2014/01/15/135316