Temporal and spatial anti-aliasing for rendering reflections on water waves

Namo Podee; Nelson Max; Kei Iwasaki; Yoshinori Dobashi

doi:10.1007/s41095-021-0204-1

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Research Article | Open Access

Temporal and spatial anti-aliasing for rendering reflections on water waves

Namo Podee^¹(), Nelson Max^², Kei Iwasaki^³, Yoshinori Dobashi^¹

1Hokkaido University, Sapporo, 060-0814, Japan

2University of California, Davis, 95616, USA

3Wakayama University, Wakayama, 640-8441, Japan

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Abstract

The reflection of a bright light source on a dynamic surface such as water with waves can be difficult to render well in real time due to reflection aliasing and flickering. In this paper, we propose a solution to this problem by approximating the reflection direction distribution for the water surface as an elliptical Gaussian distribution. Then we analytically integrate the reflection contribution throughout the rendering interval time. Our method can render in real time an animation of the time integrated reflection of a spherical light source on highly dynamic waves with reduced aliasing and flickering.

Keywords

real-time rendering anti-aliasing reflection;water surface water waves elliptical Gaussian

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Computational Visual Media

Volume 7 Issue 2,
June 2021

Pages 201-215

DOI: 10.1007/s41095-021-0204-1

Cite this article:

Podee N, Max N, Iwasaki K, et al. Temporal and spatial anti-aliasing for rendering reflections on water waves. Computational Visual Media, 2021, 7(2): 201-215. https://doi.org/10.1007/s41095-021-0204-1