Photorealism in Computer Graphics

This book is concerned with photosimulation and realism in computer graphics. Issues in radiosity are discussed and recent developments in realistic image generation are presented. The papers in the book were presented at a Eurographics workshop.

Texte du rabat

The goal of this book is to present the most advanced research work in realistic computer generated images. It contains the papers presented during a Eurographics workshop held in Rennes, France, in June 1990. The objective of this workshop was to assemble experts from physics and computer graphics to contribute to the introduction of physics-based approaches in the field of computer generated images. The book begins with an overview on realistic imagery that discusses the main issues in radiosity and describes the most recent developments. The first chapter gives a description of improved ray tracing techniques for animated scenes and parametric surfaces. The second chapter develops the theoretical aspects of global illumination models. The third chapter presents two algorithms that try to combine radiosity and ray tracing to cope with a wide class of photometric problems. The fourth chapter describes techniques aiming at efficient evaluation of form factors. The last chapter gives examples showing how physics can be used to solve some rendering problems such as interference, simulation of area light sources, and light propagation through media.

Contenu
Invited Paper.- Trends in Radiosity for Image Synthesis.- 1. Efficient Ray Tracing Methods.- Incremental Ray Tracing.- Parametric Surfaces and Ray Tracing.- 2. Theory of Global Illumination Models.- A Theoretical Analysis of Global Illumination Models.- Physically Based Lighting Calculations for Computer Graphics: A Modern Perspective.- Efficient Radiosity Methods for Non-Separable Reflectance Models.- 3. Photometric Algorithms.- A Progressive Ray-Tracing-based Radiosity with General Reflectance Functions.- A Two-Pass Radiosity Method for Bézier Patches.- 4. Form Factor Calculation.- The Hemisphere Radiosity Method: A Tale of Two Algorithms.- Exploiting Coherence for Clipping and View Transformations in Radiosity Algorithms.- A Rapid Hierarchical Radiosity Algorithm for Unoccluded Environments.- Fast Radiosity by Parallelization.- 5. Physics Based Methods.- Newton's Colors: Simulating Interference Phenomena in Realistic Image Synthesis.- Light Sources in a Ray Tracing Environment.- Methods for Efficient Sampling of Arbitrarily Distributed Volume Densities.