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US 2013/0155089 A1Published application
Real-time global illumination rendering system
AssigneeKABUSHIKI KAISHA SQUARE ENIX (also trading as SQUARE ENIX CO., LTD.)
InventorsYusuke TOKUYOSHI, Shinji OGAKI
Life of this patent
Estimating the term…
Abstract
The present invention provides an artifact-free, real-time global illumination rendering system. Artifact-free, real-time global illumination rendering can be performed by estimating appropriate specular roughness using sampling results and performing shading using the estimated specular roughness.
Claims5
A shading method comprising:
- a sampling step of sampling, by a computer, a path of light reflected at a given object (17) from a virtual light source (15) and reaching a given eye point (20);
- and
- an estimated specular roughness obtaining step of obtaining, by the computer, estimated specular roughness of a surface of the object by obtaining a distribution function for the surface of the object (17) using the path obtained in the sampling step and performing arithmetic processing such that a maximum value of the distribution function is less than or equal to a predetermined value.
A computer graphics system comprising:
- a sampling unit (101) for sampling a path of light reflected at a given object (17) from a virtual light source (15) and reaching a given eye point (20);
- and
- an estimated specular roughness obtaining unit (102) that obtains estimated specular roughness of a surface of the object by obtaining a distribution function for the surface of the object (17) using the path obtained by the sampling unit (101) and performing arithmetic processing such that a maximum value of the distribution function is less than or equal to a predetermined value.
Dependencies are inferred from the claim text.