The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2015
Filed:
Aug. 24, 2012
Yoshitaka Sasaki, Kawasaki, JP;
Satoru Torii, Fuchu, JP;
Yoshitaka Sasaki, Kawasaki, JP;
Satoru Torii, Fuchu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Light source characteristic data representing the spectral characteristics and light distribution characteristics of a light source which illuminates a scene is input. Object characteristic data representing the spectral property of an object contained in the scene is input. Ray tracing is performed for respective rays having different wavelengths. A spectral radiance in each pixel of a computer graphics image representing the scene is calculated based on the light source characteristic data and the object characteristic data. The color signal values of each pixel are calculated from the spectral radiance in the each pixel, and the computer graphics image of the scene is generated.