clj-tesseract

A Clojure wrapper for the Tesseract OCR software.

Installation

1. Install OpenCV and Tesseract for you target platform

   In OSX this can be accomplished using MacPorts.

2. Install Nakkaya's Vision library for Clojure

   Instructions can be found here: http://nakkaya.com/vision.html You need to copy the Vision .jar file to the clj-tesseract project lib directory.

3. Compile clj-tesseract native shared library.

   $ cd microcr && make $ sudo cp libmicrocr.dylib /usr/local/lib/libmicrocr.dylib

4. Compile clj-tesseract classes

   $ lein compile

5. Run the tests to check that everything is ok

$ lein test

6. Fire swank/SLIME

   $ lein swank

Usage

;; Load the library (use 'clj-tesseract.core)

;; Load vision (use 'vision.core)

;; Start tesseract

(def api (make-tesseract "/tmp"))

;; Retrieve an image from the ;; the standard webcam

(def capture (capture-from-cam 0)) (def frame (query-frame capture))

;; try capture

(def text (capture api frame)) (println (str "Captured: " text))

;; release resources

(clear api) (release capture)

;; load image from file

(def img (load-image "./test/adam.png" :grayscale)) (view :test img) ; show the image in a Frame

;; try capture and clear

(println (str "Captured:" (capture api img))) (clear api)

;; release Tesseract

(end api)

License

Copyright (C) 2010 Antonio Garrote

Distributed under the Eclipse Public License, the same as Clojure.