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Android OCR notes

Posted 11-22-2012 at 03:28 PM by NullTerminator
Updated 11-22-2012 at 06:35 PM by NullTerminator

Looking into writing an android app that can scan some simple test and process it. Some solutions require installation of the android ndk in addition to the sdk. The native development kit (ndk) allows you to compile languages like C++ into a native .so library.

The ndk is required to get a shared library build for the Tesseract OCR engine. ref: tesseract ocr project at code.google. You may be able to find prebuilt binaries if lucky. You'll need the GCC compiler and cygwin to build on windows. There is a quick overview of the process Here.

There's a great sample app released under the apache-2.0 license written by rmtheiss. Project home is at https://github.com/rmtheis/tess-two.

There's also a working demo app built on top of the library above at https://github.com/rmtheis/android-ocr. It is also visible in action on youtube

Kudos to all the contributors to this effort.

Other useful links or hints
IT Wizard comments to get up and running
Interfacing-cc-libraries-via-jni-example-tesseract
Tesseract GUI + Google Books - OCR in Linux (http://sourceforge.net/projects/tesseract-gui/)

A commercial product is also available from http://www.abbyy.com
Search for License Plate Recognition...
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