Generating images using multiple photon maps

Details Generating images using multiple photon maps Generating images using multiple photon maps

2007-06-12

2007-06-12

Chauhan, Ulka (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C708S250000

Reexamination Certificate

active

10299959

ABSTRACT:
A computer graphics system generates a pixel value for a pixel in an image, the pixel value being representative of a point in a scene as recorded on an image plane of a simulated camera, the computer graphics system comprising a photon map generator, a sample point generator and a function evaluator. The photon map generator is configured to a plurality of photon maps, each photon map being associated with a respective point in time during a time interval. The sample point generator is configured to generate a set of sample points in accordance with a selected low-discrepancy sequence, each sample point representing a respective point in time during the time interval. The function evaluator is configured to generate at least one value representing an evaluation of a selected function using selected ones of the photon maps associated with respective ones of the points in time associated with the sample points generated by the sample point generator, the value generated by the function evaluator corresponding to the pixel value.

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Henrik Wann Jensen, “Global Illumination Using Photon Maps,” Jun. 1996, Proceedings of the Seventh Eurographics Workshop on Rendering, p. 21-30.
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Alexander Keller, “Instant Radiosity,” Aug. 1997, Proceedings of the 24th Annual Conference on Computer Graphics and Interactive Techniques, p. 45-56.

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