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ADVANCES IN DESKTOP 3D-STEREOSCOPIC VISUALIZATION OF GEOSPATIAL DATA

For many years imagery has been exploited in the production of charts and maps using manual stereoscopic viewing techniques. Only recently and only to a limited extent has geospatial image data, been exploited in an automated 3D stereoscopic environment – and only since the early 1990s,. Accompanying the current interest in in-home, 3D-ready HDTVs, there is renewed interest within the geospatial community in the exploitation of geospatial products in a fully automated 3D-stereoscopic visualization environment. Both the entertainment industry and the geospatial community are confronted with a “chick-or-the-egg” dilemma – which comes first – the 3Dstereoscopic display hardware or the 3D-stereoscopic visual content. Within the geospatial community, a promising approach to this dilemma involves the simultaneous technology transfer of 3D-stereoscopic hardware from the computer gaming and entertainment industries; and at the same time performing software modifications to existing geospatial visualization software to allow visualization in either 2D or 3D-stereoscopic mode. This paper describes an active initiative to simultaneously deliver both 3D-stereoscopic viewing hardware and 3D-stereoscopic visualization software and will allow interactive and immersive exploration of very detailed cultural and natural virtual environments, very detailed social networks, and synthetic spatio-temporal environments. There have been significant engineering quandaries during the development of a capability to display both aesthetically appealing and stereographically accurate 3Dstereo visualizations – visualizations of computer generated displays. In an effort to reduce visual confusion during the 3D-stereoscopic viewing experience, significant human factors engineering has been incorporated during this development effort to ensure proper relative alignment of paired eye-points and to avoid window violations.