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A usb-camera based pointing device
Pages 16 (4016 words)
Pointing devices are described as interface such as the touchpad and graphic tablets are essential parts of computer peripherals used by general computer users and graphic designers to input data and perform designing projects. These are several known pointing devices some of which are mouse, graphics tablets and touchpad just to mention but a few.
Apparently these devices are new in the market and available systems that perform related task are usually hardwired and expensive making them inaccessible to generally users. Therefore, the objective of this project is to build a system that's affordable, convenient and readily available to people from various background. In general people prefer to have intuitive systems when performing graphical task and this could be an inexpensive way of achieving this because a USB cam typical cost about '25.
Therefore the main objective of this project will attempt to create an alternative to the conventional pointing device by creating software, which sets a USB cam as a focusing device taking video images and processing them in real time and visually tracking a stylus looking object. The stylus movement will typical translate into the movement of the pointer (cursor) on the display which will allow for a smooth control of the graphical user interface.
The project will firstly employ a camera to screen calibration system, which will enable the software to determine the connection between different locations on screen and several locations in the view of the USB cam. ...
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