IEEE Trans Vis Comput Graph - Lagrangian Texture Advection: Preserving both Spectrum and Velocity Field.

Tópicos

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Resumo

Texturing an animated fluid is a useful way to augment the visual complexity of pictures without increasing the simulation time. But texturing flowing fluids is a complex issue, as it creates conflicting requirements: we want to keep the key texture properties (features, spectrum) while advecting the texture with the underlying flow — which distorts it. In this paper, we present a new, Lagrangian, method for advecting textures: the advected texture is computed only locally and follows the velocity field at each pixel. The texture retains its local properties, including its Fourier spectrum, even though it is accurately advected. Due to its Lagrangian nature, our algorithm can perform on very large, potentially infinite scenes, with less than 10 ms per frame. Our experiments show that it is well suited for a wide range of input textures, including, but not limited to, noise textures.

Resumo Limpo

textur anim fluid use way augment visual complex pictur without increas simul time textur flow fluid complex issu creat conflict requir want keep key textur properti featur spectrum advect textur under flow x distort paper present new lagrangian method advect textur advect textur comput local follow veloc field pixel textur retain local properti includ fourier spectrum even though accur advect due lagrangian natur algorithm can perform larg potenti infinit scene less ms per frame experi show well suit wide rang input textur includ limit nois textur

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