Christian Bouville's Books

Efficient Quadrature Rules for Illumination Integrals

From Quasi Monte Carlo to Bayesian Monte Carlo

By: Ricardo Marques,Christian Bouville,Luís Paulo Santos,Kadi Bouatouch

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Efficient Quadrature Rules for Illumination Integrals

From Quasi Monte Carlo to Bayesian Monte Carlo

By: Ricardo Marques,Christian Bouville,Luís Paulo Santos,Kadi Bouatouch

Rendering photorealistic images is a costly process which can take up to several days in the case of high quality images. In most cases, the task of sampling the incident radiance function to evaluate the illumination integral is responsible for an important share of the computation time. Therefore, to reach acceptable rendering times, the illumination integral must be evaluated using a limited set of samples. Such a restriction raises the question of how to obtain the most accurate approximation possible with such a limited set of samples. One must thus ensure that sampling produces the highest amount of information possible by carefully placing and weighting the limited set of samples. Furthermore, the integral evaluation should take into account not only the information brought by sampling but also possible information available prior to sampling, such as the integrand smoothness. This idea of sparse information and the need to fully exploit the little information available is present throughout this book. The presented methods correspond to the state-of-the-art solutions in computer graphics, and take into account information which had so far been underexploited (or even neglected) by the previous approaches. The intended audiences are Ph.D. students and researchers in the field of realistic image synthesis or global illumination algorithms, or any person with a solid background in graphics and numerical techniques.

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Publisher

Springer Nature

Published Date

ISBN 10

3031795679

ISBN 13

9783031795671

Radioactive Waste

Technical and Normative Aspects of its Disposal

By: Christian Streffer,Carl Friedrich Gethmann,Georg Kamp,Wolfgang Kröger,Eckard Rehbinder,Ortwin Renn

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Radioactive Waste

Technical and Normative Aspects of its Disposal

By: Christian Streffer,Carl Friedrich Gethmann,Georg Kamp,Wolfgang Kröger,Eckard Rehbinder,Ortwin Renn

Radioactive waste (above all highly radioactive wastes from nuclear installations) caused by research, medicine and technology must be disposed of safely. However both the strategies disputed for the disposal of radioactive waste as well as concrete proposals for choosing a location for final waste disposal are highly debatable. An appropriate disposal must conform to both complex, technical requirements and fulfill the radio-biological conditions to appropriately protect man and nature. Ethical, legal and social conditions must also be considered. An interdisciplinary team from various, relevant fields compiled the current status-quo and developed criteria and strategies, which on the one hand meet the requirements of optimal warning and prevention of risk for present and future generations, and additionally on the other hand meet the needs of what current society agrees what is expected to be allowed. This study can be understood as an advanced and continuing contribution to the corresponding scientific specialized debates, due to its interdisciplinary treatment. At the same time it serves as a fundamentally informing contribution to public and political debates, offering an easily comprehensible executive summary and precise content recommendations.

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Page Count

474

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3642229255

ISBN 13

9783642229251

Low Dose Exposures in the Environment

Dose-Effect Relations and Risk Evaluation

By: Christian Streffer,H. Bolt,D. Follesdal,P. Hall,J.G. Hengstler,P. Jacob,D Oughton,K. Prieß,E. Rehbinder,E. Swaton

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Low Dose Exposures in the Environment

Dose-Effect Relations and Risk Evaluation

By: Christian Streffer,H. Bolt,D. Follesdal,P. Hall,J.G. Hengstler,P. Jacob,D Oughton,K. Prieß,E. Rehbinder,E. Swaton

The ever-increasing release of harmful agents due to human activities have led in some areas of the world to heavy pollution. In order to protect human health and the environment, environmental standards that shall limit the release and the concentration of those toxic agents in the environment and hence the exposure to it have to be established. The related assessment and decision-making procedures have to be based on solid scientific data about the effects and mechanisms of these agents as well as on ethical, social and economic aspects. For risk evaluation, the knowledge of the dose response curve is an essential prerequisite. Dose responses without a threshold dose are most critical in this connection. Such dose responses are assumed for mutagenic and carcinogenic effects, which, therefore, dominate also the discussion in this book. In the environmentally important low dose range, risk estimation can only be achieved by extrapolation from higher doses with measurable effects. The extrapolation is accompanied with uncertainties which makes risk evaluation as well as risk communication frequently problematic. In order to ensure rational efficient and fair decisions beyond a sound scientific assessment the dialogue between disciplines, with the affected people and with the general public is necessary. In this book, the whole range of relevant and essential aspects of risk evaluation and standard setting is addressed. Starting with the ethical foundations, the sound analysis of recent scientific findings sets the frame for further reflections by theory of cognition, psychosocial sciences, and jurisprudence. The authors end up with concluding recommendations for coping with the recent problems of standard setting in the field of environmentally relevant low doses. The book is designed to a readership of scientists, legislators, administrators, and the interested public.

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498

Publisher

Springer Science & Business Media

Published Date

ISBN 10

3540210830

ISBN 13

9783540210832

Efficient Quadrature Rules for Illumination Integrals

From Quasi Monte Carlo to Bayesian Monte Carlo

By: Ricardo Marques,Christian Bouville,Luís Paulo Santos,Kadi Bouatouch

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Efficient Quadrature Rules for Illumination Integrals

From Quasi Monte Carlo to Bayesian Monte Carlo

By: Ricardo Marques,Christian Bouville,Luís Paulo Santos,Kadi Bouatouch

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Morgan & Claypool Publishers

Published Date

ISBN 10

1627057706

ISBN 13

9781627057707

Photorealism in Computer Graphics

By: Kadi Bouatouch,Christian Bouville

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Photorealism in Computer Graphics

By: Kadi Bouatouch,Christian Bouville

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.

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Page Count

252

Publisher

Boom Koninklijke Uitgevers

Published Date

ISBN 10

3540542655

ISBN 13

9783540542650

Book's by Christian Bouville

Efficient Quadrature Rules for Illumination Integrals

Efficient Quadrature Rules for Illumination Integrals

Radioactive Waste

Radioactive Waste

Low Dose Exposures in the Environment

Low Dose Exposures in the Environment

Efficient Quadrature Rules for Illumination Integrals

Efficient Quadrature Rules for Illumination Integrals

Photorealism in Computer Graphics

Photorealism in Computer Graphics

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