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Free Form Incident Light Fields
Author(s) -
Unger J.,
Gustavson S.,
Larsson P.,
Ynnerman A.
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.1467-8659.2008.01268.x
Subject(s) - rendering (computer graphics) , computer science , computer vision , high dynamic range , ray , computer graphics (images) , light field , artificial intelligence , image based lighting , global illumination , position (finance) , tracking (education) , image based modeling and rendering , optics , dynamic range , physics , psychology , pedagogy , finance , economics
This paper presents methods for photo‐realistic rendering using strongly spatially variant illumination captured from real scenes. The illumination is captured along arbitrary paths in space using a high dynamic range, HDR, video camera system with position tracking. Light samples are rearranged into 4‐D incident light fields (ILF) suitable for direct use as illumination in renderings. Analysis of the captured data allows for estimation of the shape, position and spatial and angular properties of light sources in the scene. The estimated light sources can be extracted from the large 4D data set and handled separately to render scenes more efficiently and with higher quality. The ILF lighting can also be edited for detailed artistic control.