An Accurate Model of Wave Refraction Over Shallow Water

Gamito, Pedro; Musgrave, F. Kenton

doi:10.1007/978-3-7091-6344-3_12

Cited by 8 publications

(6 citation statements)

References 12 publications

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“…Generally, during this period, the water surface is wavy [24][25][26]. Therefore, the refraction of sunlight through the water surface creates inhomogeneous irradiance underwater.…”

Section: B Underwater Flickering Causticsmentioning

confidence: 99%

CauStereo: Range from light in nature

et al. 2011

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Underwater, natural illumination typically varies strongly temporally and spatially. The reason is that waves on the water surface refract light into the water in a spatiotemporally varying manner. The resulting underwater illumination field forms a caustic network and is known as flicker. This work shows that caustics can be useful for stereoscopic vision, naturally leading to range mapping of the scene. Range triangulation by stereoscopic vision requires the determination of correspondence between image points in different viewpoints, which is often a difficult problem. We show that the spatiotemporal caustic pattern very effectively establishes stereo correspondences. Thus, we term the use of this effect as CauStereo. The temporal radiance variations due to flicker are unique to each object point, thus disambiguating the correspondence, with very simple calculations. Theoretical limitations of the method are analyzed using ray-tracing simulations. The method is demonstrated by underwater in situ experiments.

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“…Generally, during this period, the water surface is wavy [24][25][26]. Therefore, the refraction of sunlight through the water surface creates inhomogeneous irradiance underwater.…”

Section: B Underwater Flickering Causticsmentioning

confidence: 99%

CauStereo: Range from light in nature

et al. 2011

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“…This method called ‘Dynamic Wave Tracing’ can handle wave reflexion and diffraction due to obstacles. This approach was also used by Gamito and Musgrave [GM02] to extract a phase map used in a parametric model, which can be animated easily. The height map representing the ocean surface can be rendered using enhanced ray tracing [GS00] or sphere tracing [DCG07] methods.…”

Section: Ocean Dynamics Simulation In Deep Watermentioning

confidence: 99%

A Survey of Ocean Simulation and Rendering Techniques in Computer Graphics

Darles

Crespin

Ghazanfarpour

et al. 2010

Computer Graphics Forum

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International audienceThis paper presents a survey of ocean simulation and rendering methods in computer graphics. To model and animate the ocean's surface, these methods mainly rely on two main approaches: on the one hand, those which approximate ocean dynamics with parametric, spectral or hybrid models and use empirical laws from oceanographic research. We will see that this type of methods essentially allows the simulation of ocean scenes in the deep water domain, without breaking waves. On the other hand, physically-based methods use Navier-Stokes Equations (NSE) to represent breaking waves and more generally ocean surface near the shore. We also describe ocean rendering methods in computer graphics, with a special interest in the simulation of phenomena such as foam and spray, and light's interaction with the ocean surface

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“…In every single moment, the water surface is generally not flat but rather wavy [10,12]. Therefore, the refraction of sunlight through this wavy surface creates inhomogeneous lighting as illustrated in Fig.…”

Section: Shallow Water Sunlight Flickermentioning

confidence: 99%