Contains the 26 papers and 13 posters presented at the September 2002 symposium on mixed and augmented reality. The papers describe recent advances in environmental sensing, tracking, tangible interfaces, calibration and projection, visualization, authoring, and platforms. The topics include the use of dense stereo range data in augmented reality, tracking with omni-directional vision for outdoor systems, calibration of a head-mounted projective display, and perceptual heuristics for combining visible and obscured information. An invited paper from MIT proposes an augmented urban planning workbench that integrates physical and digital representations. No subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com)