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Métodos multimalla en problemas lineales de flujo óptico

Authors: Asensio Madrid, Gabriel; González Manchón, Pedro María; Platero Dueñas, Carlos; Poncela Pardo, José Manuel; Sanguino Botella, Javier; Tobar Puente, María del Carmen;

Métodos multimalla en problemas lineales de flujo óptico

Abstract

Los métodos variacionales son especialmente útiles para resolver la ecuación del flujo ´optico OFC (optical flow constraint) u(x) · ∇f(t, x) + ∂tf(t, x)=0, porque preservan las discontinuidades y funcionan incluso cuando hay variaciones de iluminación. Sin embargo, las distintas regularizaciones implican funcionales cuya minimización tiene un alto costo computacional. En esta comunicación se formula el problema lineal, se discretiza y se resuelve este usando distintos métodos multimalla. Se comparan los resultados con los métodos iterativos clásicos y con los métodos directos con almacenamiento disperso. Se comprueba la mayor eficiencia de los métodos multimalla.

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Keywords

Flujo Óptico, Solución numérica de Ecuaciones en Derivadas Parciales

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green