Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Reexamination Certificate
1998-09-25
2001-05-22
Vo, Cliff N. (Department: 2772)
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
C345S427000
Reexamination Certificate
active
06236402
ABSTRACT:
TECHNICAL FIELD
This invention relates to the integration of three-dimensional computer graphics and a two-dimensional image to provide a realistic three-dimensional virtual reality experience.
BACKGROUND OF THE INVENTION
The display of a three-dimensional virtual reality world to a user requires considerable computation power, and it is typically costly to develop the necessary highly detailed models required for doing so. In order to simplify the problem, two-dimensional images, such as videos or photographs, may be used to represent or simulate portions of the three-dimensional world. A great reduction in computation power and cost can be achieved by such an arrangement.
SUMMARY OF THE INVENTION
A limitation of such a world occurs when a user moves within the world and views the world from a location different than the original context of a two-dimensional image which has been carefully calibrated to “fit into” the world. View changes, such as from a location different than the image's ideal viewing point, result in the image not aligning or fitting well with the surrounding objects of the three-dimensional world. We have recognized that, in accordance with the principles of the invention, viewpoint changes may be dealt with by distorting the two-dimensional image so as to adjust the image's vanishing point(s) in accordance with the movement of the user using a novel “pyramidic panel structure.” In this manner, as the user moves away from the ideal viewing point, the distortions act to limit the discontinuities between the two-dimensional image and the surroundings of the world. In certain embodiments, the pyramidic panel structure may be segmented into sections, each translated towards or away from the user's viewpoint and then scaled, so as to minimize the depth profile of the pyramidic panel structure.
REFERENCES:
patent: 5124693 (1992-06-01), Himelstein et al.
patent: 5261041 (1993-11-01), Susman
Youichi Horry et al., “Tour Into The Picture: Using A Spidery Mesh Interface To Make Animation From A Single Image,” Computer Graphics Proceedings, Annual Conference Series, 1997, pp. 225-232.
De La Rosa J.
Lucent Technologies - Inc.
Vo Cliff N.
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