Character Recognition Systems: A Guide for Students and Practitioners
Character Recognition Systems: A Guide for Students and Practitioners
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Although the technical capabilities advanced a lot in education, the traditional blackboard is still in use. As a substitute whiteboards or flipcharts have become a fixture in many offices, meeting rooms, school classrooms, and other work environments. One of their major disadvantages is their high cost and lack of portability. This paper describes a system which implements a virtual-whiteboard. The physical whiteboard is replaced by the projected image of a video-projector or any kind of display (PC, Notebook etc.). The user is allowed to interact (write, draw or issue commands) with the virtual whiteboard image through an IR-LED pointer. The actions of the user are captured through the IR camera which monitors the virtual whiteboard area and are merged with the content of the displayed image. The system integrates an application for character recognition and one for text and drawings manipulation allowing an easy on-line generation of PowerPoint-like presentation.