Rendering using Hybrid Normals under HDR Light Probe

Abstract

We implemented hybrid normal rendering, an efficient way to approximate the subsurface scattering component, where we use a different normal map for each RGB channel of the diffuse component to approximate the wavelength dependent behavior of the light. We also implemented Image-Based Lighting to simulate how the facial model would look like under different lighting conditions using HDR light probes as light sources. We developed a real-time graphics software to demonstrate the rendering and the illumination of an object.

Face under a spot light Face under Courtyard of the Doge’s Palace Face under Pisa Courtyard Nearing Sunset
Hand under a spot light Face rendered with Hybrid Normals under a spot light, resulting in "softer" skin. Face rendered with a traditional shading technique under a spot light
     
     

 


Koki Nagano © 2012