We have handled quite a few technically challenging projects on Optical Character Recognition (OCR). Some of them include:
Creating algorithm for visual captcha.
Developing captcha plugin for web based applications.
Developing captcha image for web based applications.
Breaking visual captcha (Only for academic purposes)
Reading complex hand written documents
Extracting hand written mathematical text from scanned document and creating MS Excel based calculations.
We are currently working on developing various other uses for OCR technology such as reading number plates of vehicles, face image recognition for security purposes, email image recognition for anti-spam applications etc.