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Occlusion Textures for Plausible Soft Shadows *
Author(s) -
Eisemann E.,
Décoret X.
Publication year - 2008
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/j.1467-8659.2007.01037.x
Subject(s) - computer science , computer vision , artificial intelligence , a priori and a posteriori , occlusion , point (geometry) , computer graphics (images) , mathematics , geometry , medicine , philosophy , epistemology , cardiology
This paper presents a new approach to compute plausible soft shadows for complex dynamic scenes and rectangular light sources. We estimate the occlusion at each point of the scene using prefiltered occlusion textures, which dynamically approximate the scene geometry. The algorithm is fast and its performance independent of the light's size. Being image‐based, it is mostly independent of the scene complexity and type. No a priori information is needed, and there is no caster/receiver separation. This makes the method appealing and easy to use.