Concept

Profil topographique

Un profil topographique ou coupe topographique est une méthode de représentation du relief. Contrairement à une carte topographique, un profil topographique est un graphique affichant l'altitude en ordonnée pour tout point d'un segment choisit sur une carte. Une série de profils parallèles, pris à intervalles réguliers sur une carte, peut être combinée pour fournir une vue tridimensionnelle plus complète. L'une des applications principales des profils topographiques concerne la construction d'ouvrages de grande longueur et de faible largeur, comme les routes, les égouts ou les pipelines. Parfois, des profils topographiques apparaissent sur des cartes imprimées (routes de navigation, plans de fouilles) mais surtout sur les cartes géologiques, où ils sont utilisés pour montrer la structure interne des roches affleurant en surface. Les personnes qui étudient les ressources naturelles, notamment les géologues, les géomorphologues, les pédologues et les spécialistes de la végétation, établissent des profils permettant d’observer la relation entre la structure d'une région et les changements topographiques.

Source officielle

https://fr.wikipedia.org/wiki/Profil_topographique

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Descriptif géométrique : Lignes droites et projections de lignes Connectez-vous à Mediaspace pour regarder cette vidéo

Explore les lignes droites, la pureté des lignes et les projections de lignes dans la description géométrique.

Publications associées (1)

Inverse Rendering for High Resolution PET Image Reconstruction with PSF and TOF Modeling

Incorporating point spread function (PSF) and time-of-flight (TOF) modeling into PET image reconstruction accounts for the physical nature of photon transport from object space to measurement space. In this study, we integrate PSF modeling within the inverse rendering-based reconstruction platform and introduce a modified digital differential analyzer (DDA) to accurately model TOF effects. The evaluation was conducted using Data Spectrum hotspot phantom and clinical tau PET data. In our proposed inverse ren

IEEE2025

Personnes associées (2)

Roger Hersch

Roger D. Hersch is professor of Computer Science and head of the Peripheral Systems Laboratory at EPFL. He received his engineering degree from ETHZ in 1975, worked in industry from 1975 to 1980, and obtained his PhD degree from EPFL in 1985. He directed the widely known Visible Human Web Server project , which offers a number of services for the visualization of human anatomy. His current research focuses on color reproduction, spectral color prediction models, moiré imaging, and visual document security. Recent achievements include the PhotoProtect technology, which incorporates text as chromatic differences in order to protect identity photographs (Swiss driving license), microstructure imaging, which is used by railways companies (SNCF, RENFE) and festival organizers (Paleo) to print tickets at home and the band moire imaging technology for the protection of security documents.

Farhad Rachidi-Haeri

Farhad Rachidi (IEEE Fellow, EMP Fellow, Electromagnetics Academy Fellow) was born in Geneva in 1962. He received the M.S. degree in electrical engineering and the Ph.D. degree from the Swiss Federal Institute of Technology, Lausanne, in 1986 and 1991 respectively. He worked at the Power Systems Laboratory of the same institute until 1996 and had several short stays at the University of Florida and the NASA Kennedy Space Center. In 1997, he joined the Lightning Research Laboratory of the University of Toronto in Canada and from April 1998 until September 1999, he was with Montena EMC in Switzerland. He is currently a titular professor and the head of the EMC Laboratory at the Swiss Federal Institute of Technology, Lausanne, Switzerland. His research interests concern electromagnetic compatibility, lightning electromagnetics and electromagnetic field interactions with transmission lines. Dr. Rachidi is currently a member of the Advisory Board of the IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY and the President of the Swiss National Committee of the International Union of Radio Science. He has received numerous awards including the 2005 IEEE EMC Technical Achievement Award, the 2005 CIGRE Technical Committee Award, the 2006 Blondel Medal from the French Association of Electrical Engineering, Electronics, Information Technology and Communication (SEE), the 2016 Berger Award from the International Conference on Lightning Protection, the 2016 Best Paper Award of the IEEE Transactions on EMC, and the 2017 Motohisa Kanda Award for the most cited paper of the IEEE Transactions on EMC (2012-2016). In 2014, he was conferred the title of Honorary Professor of the Xi’an Jiaotong University in China. He served as the Vice-Chair of the European COST Action on the Physics of Lightning Flash and its Effects from 2005 to 2009, the Chairman of the 2008 European Electromagnetics International Symposium, the President of the International Conference on Lightning Protection from 2008 to 2014, the Editor-in-Chief of the Open Atmospheric Science Journal (2010-2012) and the Editor-in-Chief of the IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY from 2013 to 2015. He is a Fellow of the IEEE and of the SUMMA Foundation, and a member of the Swiss Academy of Sciences. He is the author or coauthor of over 200 scientific papers published in peer-reviewed journals and over 400 papers presented at international conferences.

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