Getting started with NVIDIA OptiX

Ray tracing

Photorealism is a technique aiming at obtaining artificial images indistinguishable from natural ones.

Photorealistic images require the full simulation of light propagation, reflection and refraction from a light source, passing through the surfaces involved in the illumination until the light reaches the human eye. All the electromagnetic properties of a surface, like colour, reflectivity and opacity must be properly taken into account in the optical model. Ray tracing is the ultimate step towards photorealism.