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AssigneeThomson Licensing
InventorsPascal LECOCQ, Gael Sourimant, Jean-Eudes MARVIE
Estimating the term…
The present invention relates to a glossy part of radiation is estimated coming from a surface illuminated by area light source(s) having source surface(s) (A) bounded by edge curves, by determining integrand function(s) representative of that glossy part. The latter corresponding to an integration of the integrand function along the edge curves. In this respect, the integrand function(s) is/are approximated by means of peak-shape function(s) having a known antiderivative over the edge curves, and the glossy part is computed from analytical expressions associated with integrations of the peak-shape function(s) along the edge curves. Such invention can offer efficient and accurate computation for specular part of reflection as well as glossy transmission, and is notably relevant to real-time rendering.
A device for determining a glossy part of a radiation coming from a surface illuminated by at least one area light source having at least one source surface bounded by edge curves, wherein said device including at least one processor configured to determine at least one integrand function representative of said glossy part, said glossy part corresponding to an integration of said integrand function along said edge curves, said at least one processor being further configured to:
A method for determining a glossy part of a radiation coming from a surface illuminated by at least one area light source having at least one source surface bounded by edge curves, wherein said method comprises:
Dependencies are inferred from the claim text.