Real-Time Illumination of Foliage Using Depth Maps

Gumbau, Jesús; Chover, Miguel; Rebollo, Cristina; Remolar, Inmaculada

doi:10.1007/978-3-540-69387-1_15

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…Trees and forest lighting. Direct sun light shadows in individual trees are computed using either the tree geometry [MO95, MNP01] or a participating media approximation, i.e ., an exponential attenuation based on the optical depth [RB85,GCRR08,BBP08]. Likewise, direct sky light is (pre)computed using either the geometry [QNTN03] or a participating media approximation [HPAD06,BBP08].…”

Section: Related Workmentioning

confidence: 99%

Real‐time Realistic Rendering and Lighting of Forests

Bruneton

Neyret

2012

Computer Graphics Forum

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Special issue: Proceedings of Eurographics 2011International audienceRealistic real-time rendering and lighting of forests is an important aspect for simulators and video games. This is a difficult problem, due to the massive amount of geometry: aerial forest views display millions of trees on a wide range of distances, from the camera to the horizon. Light interactions, whose effects are visible at all scales, are also a problem: sun and sky dome contributions, shadows between trees, inside trees, on the ground, and view-light masking correlations. In this paper we present a method to render very large forest scenes in realtime, with realistic lighting at all scales, and without popping nor aliasing. Our method is based on two new forest representations, z-fields and shader-maps, with a seamless transition between them. Our first model builds on light fields and height fields to represent and render the nearest trees individually, accounting for all lighting effects. Our second model is a location, view and light dependent shader mapped on the terrain, accounting for the cumulated subpixel effects. Qualitative comparisons with photos show that our method produces realistic results

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