VIRTUAL REALITY AND VISUALIZATION

Toward effectively generating environment maps

[+] Author Affiliations
Shoupu Chen, Nathan D. Cahill, Lawrence A. Ray

Eastman Kodak Company, Electronic Imaging Products, Imaging Science Division, 1700 Dewey Avenue, Rochester, New York 14650 E-mail: shoupu.chen@kodak.com

J. Electron. Imaging. 12(2), 342-354 (Apr 01, 2003). doi:10.1117/1.1557697
History: Received Feb. 8, 2001; Revised Sep. 6, 2002; Accepted Dec. 2, 2002; Online April 11, 2003
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We explore a cost-effective approach to creating environment maps. Unlike other environment map generating systems that use specially designed mirrors or sensing devices, our system uses off-the-shelf digital cameras. This makes our system potentially acquirable by average consumers. In our design, the two digital cameras are displaced vertically with parallel optical axes, and the rotation axis passes through the focal points of the two cameras. This vertical displacement arrangement overcomes the problem of having inconsistent occlusions in two adjacent stereo image sets that happen in a horizontally displaced stereo camera system. To obtain dense spatial images, our system uses color-information-based algorithms to propagate disparity values from matched feature points to unmatched feature points and featureless areas. Schemes of transforming local 3-D (X,Y,Z) data to a world coordinate system are also devised to smoothly stitch 3-D data from individual frames for virtual reality modeling language graphics display. © 2003 SPIE and IS&T.

© 2003 SPIE and IS&T

Citation

Shoupu Chen ; Nathan D. Cahill and Lawrence A. Ray
"Toward effectively generating environment maps", J. Electron. Imaging. 12(2), 342-354 (Apr 01, 2003). ; http://dx.doi.org/10.1117/1.1557697


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