Cornell University Program of Computer Graphics
Philip Dutré, Philippe Bekaert, and Kavita Bala.
Advanced Global Illumination, 2nd Edition.
A K Peters, Natick, USA, 2006.
This book provides the reader with a fundamental understanding of global illumination algorithms. It discusses a broad class of algorithms for realistic image synthesis and introduces a theoretical basis for the algorithms presented.
If you want to design and implement a global illumination rendering system or need to use and modify an existing system for your specific purpose, this book will give you the tools and the understanding to do so.