27 unstable releases
Uses old Rust 2015
0.14.0 | Feb 21, 2023 |
---|---|
0.13.4 | Sep 26, 2022 |
0.13.2 | Dec 9, 2021 |
0.13.1 | Aug 31, 2021 |
0.6.0 | Jul 6, 2019 |
#268 in Images
322 downloads per month
Used in 3 crates
2MB
2K
SLoC
Leptess
Productive and safe Rust bindings/wrappers for Tesseract and Leptonica.
Build dependencies
Make sure you have clang, Leptonica and Tesseract installed.
Tesseract should be version 4.0.0 or above.
Ubuntu
sudo apt-get install libleptonica-dev libtesseract-dev clang
You will also need to install tesseract language data based on your OCR needs:
sudo apt-get install tesseract-ocr-eng
Mac
brew install tesseract leptonica
Windows
On Windows, this library uses Microsoft's vcpkg to provide tesseract.
Please install vcpkg and set up user wide integration or vcpkg crate won't be able to find the library.
To install tesseract:
REM from the vcpkg directory
REM 32 bit
.\vcpkg install tesseract:x86-windows
REM 64 bit
.\vcpkg install tesseract:x64-windows
To run the tests configure vcpkg-crate to find the tesseract library:
SET VCPKGRS_DYNAMIC=true
cargo test
Usage
let mut lt = leptess::LepTess::new(None, "eng").unwrap();
lt.set_image("path/to/page.bmp");
println!("{}", lt.get_utf8_text().unwrap());
For more examples, see docs and examples
directory.
To run demos in examples
directory, try:
cargo run --example low_level_ocr_full_page
Development
To run tests, you will need at Tesseract 4.x or 5.x to match what we have in
tests/tessdata/eng.traineddata
. See GitHub config actions to see how to replicate
the setup.