A Rapid Hierarchical Radiosity Algorithm for Unoccluded Environments
This paper presents a linear-time radiosity algorithm for scenes containing large mutually unoccluded polygonal patches. It subdivides pairs of patches adaptively to build a hierarchical data structure with n elements at the leaves, and it encodes all the
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K. Bouatouch C. Bouville
(Eds.)
Photorealism in Computer Graphics With 118 Figures, 25 in Color
Springer-Verlag Berlin Heidelberg GmbH
EurographicSeminars Edited by W. T. Hewitt, R. Gnatz, and D. A. Duce for EUROGRAPHICS The European Association for Computer Graphics P. O. Box 16, CH-1288 Aire-la-Ville, Switzerland
Volume Editors Kadi Bouatouch IRISA Campus de Beaulieu F-35042 Rennes Cedex, France Christian Bouville CCETT Rue du Clos Courtel F-3551O Cesson-Sevigne, France
ISBN 978-3-642-08112-5 Library of Congress Cataloging·in-Publication Data Photorealism in computer graphics/K.Bouatouch, C.Bouville (eds.). (EurographicSeminars) Includes bibliographical references. ISBN 978-3-642-08112-5 ISBN 978-3-662-09287-3 (eBook) DOI 10.1007/978-3-662-09287-3
p. cm.-
1. Computer graphics - Congresses. 1. Bouatouch, K. (Kadi), 1950-. II. Bouville, C. (Christian), 1949-. III. Series: EurographicSeminars. T385.P49 1992 621.39'9-dc20 91-25900 CIP
This wark is subject to copyright. Ali rights are reserved, whether the whole or part ofthe material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication ar parts thereof is permitted only under the provisions of the German Copyright Law ofSeptember 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag Berlin Heidelberg GmbH. Violations are liable for prosecution under the act ofthe German Copyright Law. © 1992 Springer-Verlag Berlin Heidelberg Originally published by Springer-Verlag Berlin Heidelberg New York in 1992 Softcover reprint of the hardcover 1st edition 1992
The use of general descriptive names, trade marks, etc. in this publication, even ifthe farmer are not especially identified, is not to be taken as a sign that such names, as understood by the Trade Marks and Merchandise Marks Act, may accordingly be used freely by anyone. Typesetting: Camera ready by author 45/3140-543210- Printed on acid-free paper
Preface
The goal of this book is to present the most advanced research works in realistic computer generated images. It is made up of the papers presented during a Eurographics workshop that has been held in Rennes (France) on June 1990. Although realism in computer graphics has existed for many years, we have considered that two research directions can now clearly be identified. One makes use of empirical methods to efficiently create images that look real. As opposed to this approach, the other orientation makes use of physics to produce images that are exact representations of the real world (at the expense of additional processing time), hence the term photosimulation which indeed was the subject of this book. The objectives of this workshop were to assemble experts from physics and computer graphics in order to contribute to the introduction of physics-based approaches in the field of computer generated images. The fact that this workshop wa
