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Fourier Synthesis of Ocean Scenes

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3 Author(s)
Mastin, G.A. ; Sandia National Laboratories ; Watterberg, P.A. ; Mareda, J.F.

Considerable interest in scene synthesis has focused on fractal techniques such as 1/f noise filtering. However, these techniques produce poor synthetic ocean scenes. A superior technique is presented here that used an empirical sea spectrum model to represent a fully developed sea in nautre. A computer program has been written whereby a user supplies a wind velocity, and a two-dimensional Fourier-domain filter is created whose shape is decribed by the modified Pierson-Moskowitz spectrum. A white-noise image can then be filtered and rendered with a ray-tracing algorithm to produce a realistic ocean scene. Wave motion may be invoked by manipulating teh phase of the Fourier-transormed white-noise image. Several phase-manipulating techniques have been implemented.

Published in:

Computer Graphics and Applications, IEEE  (Volume:7 ,  Issue: 3 )