Pseudo-random sampling techniques in computer graphics

Details Pseudo-random sampling techniques in computer graphics Pseudo-random sampling techniques in computer graphics

G - Physics

09

G

375/18, 354/236.

G09G 1/14 (2006.01) G06T 15/50 (2006.01)

Patent

CA 1256224

PSEUDO-RAMDOM POINT SAMPLING TECHNIQUES IN COMPUTER GRAPHICS Abstract of the Disclosure A computer database contains visual and other information of an object scene from which a television monitor or film display is created by electronically sampling points of the object scene information in the computer memory. Undesirable effects of aliasing are significantly reduced and substantially eliminated by pseudo-randomly distributing, in a particular manner, the occurrence of the point samples in space and time. Realistic depth of field is obtained in the images, corresponding to what is observed through a camera lens, by altering the sample point locations to simulate passing them through an optical aperture in a pseudo- random distribution thereacross. Further, effects of illumination, shadows, object reflection and object refraction are made more realistic by causing each sample point to pseudo-randomly select one of a predetermined number of possible ray directions.

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