EAN: 9783031795664

SYNTHESIS LECTURES ON COMPUTER GRAPHICS AND ANI...

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 question of how to
obtain the most accurate approximation possible with such a limited set of samples. One must
thus ensure that sampling produces the highest amount of information possible by carefully
placing and weighting the limited set of samples. Furthermore  the integral evaluation should
take into account not only the information brought by sampling but also possible information
available prior to sampling  such as the integrand smoothness. This idea of sparse information
and the need to fully exploit the little information available is present throughout this book.
The presented methods correspond to the state-of-the-art solutions in computer graphics  and
take into account information which had so far been underexploited (or even neglected) by the
previous approaches. The intended audiences are Ph.D. students and researchers in the field of
realistic image synthesis or global illumination algorithms  or any person with a solid
background in graphics and numerical techniques.

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