OCR demo using OpenCV (nightly at July 30, 2014) text module and tess-two https://github.com/rmtheis/tess-two
Tesseract trained data for english (eng.traineddata) has to exist under /sdcard/tessdata folder. If you have not had it, please download it from tesseract official https://code.google.com/p/tesseract-ocr/ and push it to device's sdcard by adb push.