Method for estimating light scattering
OwnerCyril Delalandre, Pascal Gautron +1inventors
InventorsCyril Delalandre, Pascal Gautron, Jean-Eudes Marvie
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Abstract
The invention relates to a method for estimating the quantity of light scattered by a heterogeneous participating media. In order to improve the display while minimising the required calculation time, the method comprises steps for: estimation of projection coefficients in a function basis using values representative of density for a set of points of said media that are situated along at least one emission direction of light by a light source, and estimation of the quantity of light scattered by said media, according to at least one scattering direction of the light, using said estimated projection coefficients.
Claims12
Method for estimation of the quantity of light scattered by a heterogeneous participating media, wherein the method comprises steps for:
- estimation of projection coefficients representative of values of light intensity reduction estimated for a set of points of said media situated along at least one emission direction of light by a light source by projection of said values of light intensity reduction in a functional space of a functions base, and
- estimation of the quantity of light scattered by said media, according to at least one scattering direction of the light, using said estimated projection coefficients.
Device configured for the estimation of the quantity of light scattered by a heterogeneous participating media, wherein the device comprises:
- a processing circuit for estimating projection coefficients representative of values of light intensity reduction estimated for a set of points of said media situated along at least one emission direction of light by a light source by projection of said values of light intensity reduction in a functional space of a functions base, and
- a processing circuit for estimating the quantity of light scattered by said media, according to at least one scattering direction of the light, using said estimated projection coefficients.
Dependencies are inferred from the claim text.