Efficient Quadrature Rules for Illumination Integrals
Santos, Luís Paulo / Bouville, Christian / Marques, Ricardo
Rendering photorealistic images is a costly process which can take up to several days in the case of high quality images. In most cases, the task of sampling the incident radiance function to evaluate the illumination integral is responsible for an important share of the computation time. Therefore, to reach acceptable rendering times, the illumination integral must be evaluated using a limited set of samples. Such a restriction raises the que...