Tesserocr bindings
Project description
Segment region, line, recognize with tesserocr
Installation
Required ubuntu packages:
Tesseract headers (libtesseract-dev)
Some tesseract language models (tesseract-ocr-{eng,deu,frk,...} or script models (tesseract-ocr-script-{latn,frak,...})
Leptonica headers (libleptonica-dev)
pip install -r requirements pip install .
If tesserocr fails to compile with an error::
$PREFIX/include/tesseract/unicharset.h:241:10: error: ‘string’ does not name a type; did you mean ‘stdin’? static string CleanupString(const char* utf8_str) { ^~~~~~ stdin
This is due to some inconsistencies in the installed tesseract C headers (fix expected for next Ubuntu upgrade, already fixed for Debian). Replace string with std::string in $PREFIX/include/tesseract/unicharset.h:265:5: and $PREFIX/include/tesseract/unichar.h:164:10: ff.
If tesserocr fails with an error about LSTM/CUBE, you have a mismatch between tesseract header/data/pkg-config versions. apt policy libtesseract-dev lists the apt-installable versions, keep it consistent. Make sure there are no spurious pkg-config artifacts, e.g. in /usr/local/lib/pkgconfig/tesseract.pc. The same goes for language models.
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