Download or read book M thode Des Chemins Minimaux Appliqu e L imagerie M dicale written by Fethallah Benmansour and published by . This book was released on 2009 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we used and adapted the minimal path method to segment tubular structures in medical images, and to extract closed surfaces from biomedical images. The minimal path method has been introduced in order to minimize globally the geodesic active contour functional. In the first part of the manuscript, we recall the active contour models and their variants, and discuss their advantages and drawbacks. Then, we focus on the theoretical and numerical aspects of the minimal path method both in the classical isotropic case and the Riemannian anisotropic case. Also, we illustrate the importance of the metric and show how one can tune its parameters in order to overcome the shortcut issue. In the second part, we are interested in segmenting tubular structures. We propose a novel minimal path model that takes into account the vessel width and direction. We have chosen to exploit the tubular structure of the vessels one wants to extract to build an anisotropic metric giving higher speed on the center of the vessels and also when the minimal path tangent is coherent with the vessel's direction. In the third part, the problem of surface extraction from 3D images is addressed. First, we introduce a front propagation approach to detect recursively keypoints on an object of interest. Then, we propose a method to extract a patch of surface from a single source point. In order to obtain a complete surface, this approach is iterated. Finally, we propose a global approach that takes benefit of the interfaces surrounding the object.

Download or read book Extractions de courbes et surfaces par m thodes de chemins minimaux et ensembles de niveaux written by Thomas Deschamps and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans cette these nous nous interessons a l'utilisation des méthodes de chemins minimaux et des méthodes de contours actifs par Ensembles de Niveaux, pour l'extraction de courbes et de surfaces dans des images medicales 3D. Dans un premier temps, nous nous sommes attaches a proposer un éventail varié de techniques d'extraction de chemins minimaux dans des images 2D et 3D, basees sur la résolution de l'équation Eikonal par l'algorithme du Fast Marching. Nous avons montre des resultats de ces techniques appliquees a des problèmes d'imagerie médicale concrets, notamment en construction de trajectoires 3D pour l'endoscopie virtuelle, et en segmentation interactive, avec possibilité d'apprentissage. Dans un deuxieme temps, nous nous sommes interessés a l'extraction de surfaces. Nous avons developpé un algorithme rapide de pré-segmentation, sur la base du formalisme des chemins minimaux. Nous avons étudié en détail la mise en place d'une collaboration entre cette méthode et celle des Ensembles de Niveaux, dont un des avantages communs est de ne pas avoir d'a priori sur la topologie de l'objet a segmenter. Cette méthode collaborative a ensuite ete testée sur des problèmes de segmentation et de visualisation de pathologies telles que les anevrismes cerebraux et les polypes du colon. Dans un troisième temps nous avons fusionné les résultats des deux premières parties pour obtenir l'extraction de surfaces, et des squelettes d'objets anatomiques tubulaires. Les squelettes des surfaces fournissent des trajectoires que nous utilisons pour déplacer des cameras virtuelles, et nous servent a definir les sections des objets lorsque nous voulons mesurer l'étendue d'une pathologie. La dernière partie regroupe des applications de ces méthodes a l'extraction de structures arborescentes. Nous étudions le cas des arbres vasculaires dans des images médicales 3D de produit de contraste, ainsi que le problème plus difficile de l'extraction de l'arbre bronchique sur des images scanners des poumons.

Download or read book Extractions de courbes et surfaces par m thodes de chemins minimaux et ensembles de niveaux applications en imagerie m dicale 3D written by Thomas Deschamps and published by . This book was released on 2001 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans cette these nous nous interessons a l'utilisation des méthodes de chemins minimaux et des méthodes de contours actifs par Ensembles de Niveaux, pour l'extraction de courbes et de surfaces dans des images medicales 3D. Dans un premier temps, nous nous sommes attaches a proposer un éventail varié de techniques d'extraction de chemins minimaux dans des images 2D et 3D, basees sur la résolution de l'équation Eikonal par l'algorithme du Fast Marching. Nous avons montre des resultats de ces techniques appliquees a des problèmes d'imagerie médicale concrets, notamment en construction de trajectoires 3D pour l'endoscopie virtuelle, et en segmentation interactive, avec possibilité d'apprentissage. Dans un deuxieme temps, nous nous sommes interessés a l'extraction de surfaces. Nous avons developpé un algorithme rapide de pré-segmentation, sur la base du formalisme des chemins minimaux. Nous avons étudié en détail la mise en place d'une collaboration entre cette méthode et celle des Ensembles de Niveaux, dont un des avantages communs est de ne pas avoir d'a priori sur la topologie de l'objet a segmenter. Cette méthode collaborative a ensuite ete testée sur des problèmes de segmentation et de visualisation de pathologies telles que les anevrismes cerebraux et les polypes du colon. Dans un troisième temps nous avons fusionné les résultats des deux premières parties pour obtenir l'extraction de surfaces, et des squelettes d'objets anatomiques tubulaires. Les squelettes des surfaces fournissent des trajectoires que nous utilisons pour déplacer des cameras virtuelles, et nous servent a definir les sections des objets lorsque nous voulons mesurer l'étendue d'une pathologie. La dernière partie regroupe des applications de ces méthodes a l'extraction de structures arborescentes. Nous étudions le cas des arbres vasculaires dans des images médicales 3D de produit de contraste, ainsi que le problème plus difficile de l'extraction de l'arbre bronchique sur des images scanners des poumons.

Download or read book Applications de calculs de plus courts chemins en imagerie m dicale written by Mickaël Péchaud and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail porte sur le calcul de plus courts chemins en vision par ordinateur, et plus particulièrement sur son application en imagerie médicale . Après une introduction générale aux problèmes de plus courts chemins discrets et continus, nous présentons une version unifiée des algorithmes de type fast-marchings, ainsi qu'une preuve de convergence dans un cas général. Nous proposons ensuite une application à la segmentation de structures tubulaires dans des images bi-dimensionnelles - permettant intrinsèquement de détecter le centre et le rayon de la structure en reformulant le problème comme un problème de plus courts chemins en dimension 4. Nous démontrons la précision et la robustesse de cette méthode sur des exemples réels et synthétiques . Ce formalisme est appliqué à la segmentation en imagerie optique corticale à partir de l'information de flot et étendu pour la segmentation de réseaux complets. Enfin, nous proposons une application des plus court chemins à l'analyse de données issues d'IRM de diffusion à haute résolution angulaire (HARDI), permettan entre autres la segmentation de faisceaux de fibres réputés difficiles

Download or read book Microwave Imaging Methods and Applications written by Matteo Pastorino and published by Artech House. This book was released on 2018-06-30 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave Imaging Methods and Applications provides practitioners and researchers with a complete overview of the latest and most important noninvasive and nondestructive techniques for inspecting structures and bodies by using microwaves. Placing emphasis on applications, the book considers many areas, from medical imaging and security… to industrial engineering and subsurface prospection. For each application, readers are presented with the objectives of the inspection and related challenges. Moreover, this groundbreaking resource details computational methods that can be used to solve inverse problems related to specific applications. Including clear examples or the most significant practical results, this forward-looking reference focuses on systems that have been recently developed. Professionals gain the knowledge needed to compare imaging methods used in different applications and develop new uses of imaging apparatuses and systems.

Download or read book Your Mindful Compass written by Andrea Maloney Schara and published by . This book was released on 2013-12-01 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Your Mindful Compass" takes us behind the emotional curtain to see the mechanisms regulating individuals in social systems. There is great comfort and wisdom in knowing we can increase our awareness to manage the swift and ancient mechanisms of social control. We can gain greater flexibility by seeing how social controls work in systems from ants to humans. To be less controlled by others, we learn how emotional systems influence our relationship-oriented brain. People want to know what goes on in families that give rise to amazing leaders and/or terrorists. For the first time in history we can understand the systems in which we live. The social sciences have been accumulating knowledge since the early fifties as to how we are regulated by others. S. Milgram, S. Ashe, P. Zimbardo and J. Calhoun, detail the vulnerability to being duped and deceived and the difficulty of cooperating when values differ. Murray Bowen, M.D., the first researcher to observe several live-in families, for up to three years, at the National Institute of Mental Health. Describing how family members overly influence one another and distribute stress unevenly, Bowen described both how symptoms and family leaders emerge in highly stressed families. Our brain is not organized to automatically perceive that each family has an emotional system, fine-tuned by evolution and "valuing" its survival as a whole, as much as the survival of any individual. It is easier to see this emotional system function in ants or mice but not in humans. The emotional system is organized to snooker us humans: encouraging us to take sides, run away from others, to pressure others, to get sick, to blame others, and to have great difficulty in seeing our part in problems. It is hard to see that we become anxious, stressed out and even that we are difficult to deal with. But "thinking systems" can open the doors of perception, allowing us to experience the world in a different way. This book offers both coaching ideas and stories from leaders as to strategies to break out from social control by de-triangling, using paradoxes, reversals and other types of interruptions of highly linked emotional processes. Time is needed to think clearly about the automatic nature of the two against one triangle. Time and experience is required as we learn strategies to put two people together and get self outside the control of the system. In addition, it takes time to clarify and define one's principles, to know what "I" will or will not do and to be able to take a stand with others with whom we are very involved. The good news is that systems' thinking is possible for anyone. It is always possible for an individual to understand feelings and to integrate them with their more rational brains. In so doing, an individual increases his or her ability to communicate despite misunderstandings or even rejection from important others. The effort involved in creating your Mindful Compass enables us to perceive the relationship system without experiencing it's threats. The four points on the Mindful Compass are: 1) Action for Self, 2) Resistance to Forward Progress, 3) Knowledge of Social Systems and the 4) The Ability to Stand Alone. Each gives us a view of the process one enters when making an effort to define a self and build an emotional backbone. It is not easy to find our way through the social jungle. The ability to know emotional systems well enough to take a position for self and to become more differentiated is part of the natural way humans cope with pressure. Now people can use available knowledge to build an emotional backbone, by thoughtfully altering their part in the relationship system. No one knows how far one can go by making an effort to be more of a self-defined individual in relationships to others. Through increasing emotional maturity, we can find greater individual freedom at the same time that we increase our ability to cooperate and to be close to others.

Download or read book Medical Computer Vision written by Bjoern Menze and published by Springer. This book was released on 2011-02-02 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-workshop proceedings of the International Workshop on Medical Computer Vision, MCV 2010, held in Beijing, China, in September 2010 as a satellite event of the 13th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2010. The 10 revised full papers and 11 revised poster papers presented were carefully reviewed and selected from 38 initial submissions. The papers explore the use of modern image recognition technology in tasks such as semantic anatomy parsing, automatic segmentation and quantification, anomaly detection and categorization, data harvesting, semantic navigation and visualization, data organization and clustering, and general-purpose automatic understanding of medical images.

Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.

Download or read book Jung s Technique of Active Imagination and Desoille s Directed Waking Dream Method written by Laner Cassar and published by Routledge. This book was released on 2020-06-07 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jung's Technique of Active Imagination and Desoille's Directed Waking Dream Method brings together Carl Jung’s active imagination and Robert Desoille’s "rêve éveillé dirigé/directed waking dream" method (RED). It studies the historical development of these approaches in Central Europe in the first half of the 20th century and explores their theoretical similarities and differences, proposing an integrated framework of clinical practice. The book aims to study the wider European context of the 1900s which influenced the development of both Jung’s and Desoille’s methods. This work compares the spatial metaphors of interiority used by both Jung and Desoille to describe the traditional concept of inner psychic space in the waking dreams of Jung’s active imagination and Desoille’s RED. It also attempts a broader theoretical comparison between the procedural aspects of both RED and active imagination by identifying commonalities and divergences between the two approaches. This book is a unique contribution to analytical psychology and will be of great interest for academics, researchers and post-graduate students interested in the use of imagination and mental imagery in analysis, psychotherapy and counselling. The book’s historical focus will be of particular relevance to Jungian and Desoillian scholars since it is the first of its kind to trace the connections between the two schools and it gives a detailed account of Desoille’s early life and his first written works. This book was a Gradiva Award nominee for 2021.

Download or read book PASCAL written by and published by . This book was released on 1994 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Local Approximation Techniques in Signal and Image Processing written by Vladimir I︠A︡kovlevich Katkovnik and published by SPIE-International Society for Optical Engineering. This book was released on 2006 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a wide class of novel and efficient adaptive signal processing techniques developed to restore signals from noisy and degraded observations. These signals include those acquired from still or video cameras, electron microscopes, radar, X-rays, or ultrasound devices, and are used for various purposes, including entertainment, medical, business, industrial, military, civil, security, and scientific. In many cases useful information and high quality must be extracted from the imaging. However, often raw signals are not directly suitable for this purpose and must be processed in some way. Such processing is called signal reconstruction. This book is devoted to a recent and original approach to signal reconstruction based on combining two independent ideas: local polynomial approximation and the intersection of confidence interval rule.

Download or read book Innovate Bristol written by Sven Boermeester and published by . This book was released on 2019-12 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovate Bristol highlights and celebrates those companies and individuals that are actively working at building a better tomorrow for all. Innovation Ecosystems thrive through the involvement and support of companies and individuals from all industries, which is why the Innovate series not only focuses on the innovators but also those people whom the Innovation Ecosystem, would not be able to thrive without.

Download or read book Treatment Planning in Radiation Oncology written by Faiz M. Khan and published by Lippincott Williams & Wilkins. This book was released on 1998 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation oncology is integrated with medical physics for a unique look at the state of the art in cancer patient care. World-renowned authors provide a complete discussion of treatment planning featuring the clinical, physical, and technical aspects involved. Coverage includes 3-D conformal treatment and other advancements in computer technology and medical imaging to bring the reader a modern perspective on treatment planning.

Download or read book Women in England 1870 1950 written by Jane E. Lewis and published by Brighton, Sussex : Wheatsheaf Books ; Bloomington : Indiana University Press. This book was released on 1984 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: "... offers an alternative depth of context for viewing the structure of women's lives.... thoughtful and judicious." --Joyce Berkman "Women in England breaks ground in its interpretive treatment of feminist, suffrage, and labor issues in a single volume." --Signs A penetrating account of the changing nature of English working and middle-class women's experiences at school, home, work, and in politics from 1870 to 1950.

Download or read book Product Life Cycle Management written by Max Giordano and published by John Wiley & Sons. This book was released on 2012-12-17 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a comprehensive view of the most recent major international research in the field of tolerancing, and is an excellent resource for anyone interested in Computer Aided Tolerating. It is organized into 4 parts. Part 1 focuses on the more general problems of tolerance analysis and synthesis, for tolerancing in mechanical design and manufacturing processes. Part 2 specifically highlights the simulation of assembly with defects, and the influence of tolerances on the quality of the assembly. Part 3 deals with measurement aspects, and quality control throughout the life cycle. Different measurement technologies and methods for estimating uncertainty are considered. In Part 4, different aspects of tolerancing and their interactions are explored, from the definition of functional requirement to measurement processes in a PLM approach.

Download or read book Connecting Spheres written by Marilyn J. Boxer and published by Oxford University Press, USA. This book was released on 1987 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating the discoveries of the new feminist scholarship with the main themes of Western civilization, this text examines women's influence on, and daily connections with, the religious, political, economic, scientific, social, and cultural changes that have transformed our world during the last half-millennium.

Download or read book Frontline and Factory written by Roy MacLeod and published by Springer Science & Business Media. This book was released on 2007-05-06 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents a first considered attempt to study the factors that conditioned industrial chemistry for war in 1914-18. Taking a comparative perspective, it reflects on the experience of France, Germany, Austria, Russia, Britain, Italy and Russia, and points to significant similarities and differences. It looks at changing patterns in the organisation of industry, and at the emerging symbiosis between science, industry and the military.