John E. Warnock
Computer scientist; Company executive
Mathematical and Physical Sciences
Co-Chairman and Founder. As CEO, guided Adobe through the conception, development, and marketing of widely used graphic communications products including: PostScript, Illustrator, Photoshop, and Acrobat. Before founding Adobe in 1982, worked at Xerox's Palo Alto Research Center specializing in device independent graphics and printing protocols. At the University of Utah Warnock invented what is now called _e Warnock algorithm for hidden surface determination in computer graphics.