The University of Illinois at Chicago's (UIC's) Electronic Visualization Laboratory maintains a video display wall that features 18 high-definition screens and a resolution of 8,160 by 2,304 pixels.
Recently, students made the wall entirely touch-enabled and created an iPad application that allows multiple users to paint on the virtual wall. The students used touch overlay technology to make the screen touch sensitive. The wall uses infrared light that is emitted and detected to recognize touch.
Several applications have been developed that take advantage of the wall's touch sensitivity, and three students recently began working on the 20-feet canvas, a paint program for the wall. The wall can recognize 32 touches simultaneously, which allows for the creation of a mural using the program. The iPad application "takes the color and breaks it into a string of characters and sends it over the wireless network to the wall," says UIC's Philip Pilosi.
From Chicago Journal
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