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An Adaptive Method for Indirect Illumination Using Light Vectors
Author(s) -
Serpaggi Xavier,
Péroche Bernard
Publication year - 2001
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/1467-8659.00383-i1
Subject(s) - global illumination , computer science , ray tracing (physics) , path tracing , computation , computer graphics , shadow (psychology) , computer graphics (images) , monte carlo method , distributed ray tracing , tracing , computer vision , rendering (computer graphics) , field (mathematics) , graphics , light field , importance sampling , artificial intelligence , algorithm , mathematics , optics , psychology , statistics , physics , pure mathematics , psychotherapist , operating system
In computer graphics, several phenomema need to be taken into account when it comes to the field of photo‐realism. One of the most relevant is obviously the notion of global, and more precisely indirect, illumination. In “classical” ray‐tracing if you are not under the light, then you are in a shadow. A great amount of work has been carried out which proposes ray‐tracing based solutions to take into account the fact that “there is a certain amount of light in shadows”. All of these methods carry the same weaknesses: high computation time and a lot of parameters you need to manage to get something out of the method. This paper proposes a generic computation method of indirect illumination based on Monte Carlo sampling and on the sequential analysis theory, which is faster and more automatic than classical methods.