Computer Science – Human-Computer Interaction
Scientific paper
2009-11-28
Computer Science
Human-Computer Interaction
7 pages, 20 figures
Scientific paper
We present here a pattern sensitive PowerPoint presentation scheme. The presentation is actuated by simple patterns drawn on the presentation screen by a laser pointer. A specific pattern corresponds to a particular command required to operate the presentation. Laser spot on the screen is captured by a RGB webcam with a red filter mounted, and its location is identified at the blue layer of each captured frame by estimating the mean position of the pixels whose intensity is above a given threshold value. Measured Reliability, Accuracy and Latency of our system are 90%, 10 pixels (in the worst case) and 38 ms respectively.
Agrawal Vivek
Chowdhary Atul
Karmakar Subhajit
Sarkar Sandip
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