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Simultaneous Tracking and Shape Estimation of Extended Objects

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Book Series: Karlsruhe Series on Intelligent Sensor-Actuator-Systems / Karlsruher Institut für Technologie, Intelligent Sensor-Actuator-Systems Laboratory ISSN: 18673813 ISBN: 9783731500780 Year: Volume: 13 Pages: XII, 162 p. DOI: 10.5445/KSP/1000035959 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:01:57
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This work is concerned with the simultaneous tracking and shape estimation of a mobile extended object based on noisy sensor measurements. Novel methods are developed for coping with the following two main challenges: i) The computational complexity due to the nonlinearity and high-dimensionality of the problem and ii) the lack of statistical knowledge about possible measurement sources on the extended object.

The impact of interfaces on the performance of organic photovoltaic cells

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ISBN: 9783866445260 Year: Pages: XII, 133 p. DOI: 10.5445/KSP/1000018424 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:02
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Organic photovoltaic is an attractive technology to solve future energy supply scenarios. To further increase the potential of this technology novel absorber materials and interface materials have to be developed. In this work the paramount importance of interface materials for efficient as well as stable organic photovoltaic cells and modules is demonstrated. The general requirements of interface materials are elaborated and properties of a novel interface material which meets the demands are investigated experimentally and by simulations.

Regularisierung des Deflektometrieproblems - Grundlagen und Anwendung

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Book Series: Schriftenreihe Automatische Sichtprüfung und Bildauswertung ISSN: 18665934 ISBN: 9783866442306 Year: Volume: 1 Pages: XII, 124 p. DOI: 10.5445/KSP/1000007844 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Computer Science
Added to DOAB on : 2019-07-30 20:02:02
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Die Arbeit präsentiert zwei neuartige deflektometrische Verfahren, die jeweils unter Einbeziehung von Zusatzinformation eine eindeutige Lösung des mathematisch schlecht gestellten Rekonstruktionsproblems erlauben. Das erste der beiden stützt sich auf das bei vielen praxisrelevanten Bauteilen auftretende diffuse Reflexionsverhalten. Außerdem wird ein allgemeines Modell des spekularen optischen Flusses hergeleitet, der entsteht, wenn die gesuchte Fläche relativ zum Messaufbau bewegt wird.

Development of Microactuators Based on the Magnetic Shape Memory Effect

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Book Series: Schriften des Instituts für Mikrostrukturtechnik am Karlsruher Institut für Technologie / Hrsg.: Institut für Mikrostrukturtechnik ISSN: 18695183 ISBN: 9783731501251 Year: Volume: 21 Pages: X, 153 p. DOI: 10.5445/KSP/1000036883 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:01:58
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The giant magneto-strain effect in Ni-Mn-Ga alloys is particularly attractive for actuator applications. Two different approaches are being pursued to develop MSM microactuators. To observe large deflections of Ni-Mn-Ga microactuators, the material should be exhibiting low twinning stress and large magnetic anisotropy. In addition, design rules and boundary conditions for operating the Ni-Mn-Ga actuator material are having significant importance for evolution of performance characteristics.

Hierarchical Object Representations in the Visual Cortex and Computer Vision

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889197989 Year: Pages: 290 DOI: 10.3389/978-2-88919-798-9 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2017-02-03 17:04:57
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Over the past 40 years, neurobiology and computational neuroscience has proved that deeper understanding of visual processes in humans and non-human primates can lead to important advancements in computational perception theories and systems. One of the main difficulties that arises when designing automatic vision systems is developing a mechanism that can recognize - or simply find - an object when faced with all the possible variations that may occur in a natural scene, with the ease of the primate visual system. The area of the brain in primates that is dedicated at analyzing visual information is the visual cortex. The visual cortex performs a wide variety of complex tasks by means of simple operations. These seemingly simple operations are applied to several layers of neurons organized into a hierarchy, the layers representing increasingly complex, abstract intermediate processing stages. In this Research Topic we propose to bring together current efforts in neurophysiology and computer vision in order 1) To understand how the visual cortex encodes an object from a starting point where neurons respond to lines, bars or edges to the representation of an object at the top of the hierarchy that is invariant to illumination, size, location, viewpoint, rotation and robust to occlusions and clutter; and 2) How the design of automatic vision systems benefit from that knowledge to get closer to human accuracy, efficiency and robustness to variations.

Symmetry in Vision

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ISBN: 9783038424963 9783038424970 Year: Pages: X, 198 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mathematics
Added to DOAB on : 2017-10-02 11:54:07
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Symmetry has a central role in the study of vision. The concept of symmetry has an ancient origin in considerations of visual appearance; in modern times, abstracted and formalized into Group Theory, it has found spectacular applications, far beyond the visible; but its importance for vision persists in many ways including:• As a non-accidental feature of an image that cues affordances, 3D structure or the semantic categories of object present.• As a redundant aspect of an image which many be exploited for simplicity and compactness of encoding.• As a salient feature that draws attention, and evokes distinctive brain responses.• As a constraint on priors on the distribution of structures to be found in the natural world.• As an aesthetic principle.• As a design principle for vision systems.• The original idea for a Special Issue came from a symposium at the European Conference in Visual Perception, in 2015, on the topic of brain responses to visual symmetry, but we have now extended the scope. This Special Issue is devoted to provide a shared place for cutting edge studies on how and why symmetry is processed and exploited by biological and artificial visual systems.

A grammar of Rapa Nui

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Book Series: Studies in Diversity Linguistics ISBN: 9783946234753 9783946234760 9781542544795 Year: Pages: 665 DOI: 10.5281/zenodo.235525 Language: English
Publisher: Language Science Press
Subject: Linguistics
Added to DOAB on : 2018-01-16 11:01:54
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This book is a comprehensive description of the grammar of Rapa Nui, the Polynesian language spoken on Easter Island. After an introductory chapter, the grammar deals with phonology, word classes, the noun phrase, possession, the verb phrase, verbal and nonverbal clauses, mood and negation, and clause combinations. The phonology of Rapa Nui reveals certain issues of typological interest, such as the existence of strict conditions on the phonological shape of words, word-final devoicing, and reduplication patterns motivated by metrical constraints. For Polynesian languages, the distinction between nouns and verbs in the lexicon has often been denied; in this grammar it is argued that this distinction is needed for Rapa Nui. Rapa Nui has sometimes been characterised as an ergative language; this grammar shows that it is unambiguously accusative. Subject and object marking depend on an interplay of syntactic, semantic and pragmatic factors. Other distinctive features of the language include the existence of a ‘neutral’ aspect marker, a serial verb construction, the emergence of copula verbs, a possessive-relative construction, and a tendency to maximise the use of the nominal domain. Rapa Nui’s relationship to the other Polynesian languages is a recurring theme in this grammar; the relationship to Tahitian (which has profoundly influenced Rapa Nui) especially deserves attention. The grammar is supplemented with a number of interlinear texts, two maps and a subject index.

Shape Memory Alloys 2017

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ISBN: 9783038427735 9783038427742 Year: Pages: VIII, 182 DOI: 10.3390/books978-3-03842-774-2 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Mining and Metallurgy --- Electricity
Added to DOAB on : 2018-04-06 13:33:01
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Shape memory alloys (SMAs) have special property of the shape memory effect. After thermal treatment above the martensitic transition temperature, the alloys come back to the original shape when the alloys heat again after having cooled it to the temperature that is lower than the martensitic transition temperature. By means of this property, many industrial parts and systems were produced. This Special Issue "Shape Memory Alloys 2017" is constructed articles reporting new and progressive research results, as well as reviews of particular classes of fundamental physics of the materials and their applications of SMAs. Through its 17 efficient articles, the reader will approach to researches related to SMAs with their peculiar magnetic, thermo-mechanical properties, superelasticity, plastic deformation and compression under pressure. These physical properties introduce a large number of applications as faster SMA actuators, application of medical devices, industrial joining parts, volts, and magnetic/mechanical/thermal sensors. These articles are intended scientific researchers, professional engineers, students to obtain a better understanding in this field lately.

100 Years of Prandtl's Wedge

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ISBN: 9781614998495 9781614998501 Year: Pages: 144 DOI: 10.3233/978-1-61499-850-1-i Language: English
Publisher: IOS Press
Subject: General and Civil Engineering
Added to DOAB on : 2018-06-20 15:09:53
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The biggest problem for a shallow foundation, just as for any other type of foundation, is a failure due to an overestimation of the bearing capacity. This means that the correct prediction of the bearing capacity of the foundation is often the most important part of the design of a civil structure. That is why the publication by Prandtl in 1920 about the hardness of a plastic body, was a major step in solving the bearing capacity of shallow foundations, although it is well possible that he never realised this, because his solution was not made for civil engineering purposes, but for mechanical purposes. Over the last 100 years, a lot of extensions have been made, for example with inclination factors and shape factors. Also many laboratory experiments have been done and numerical calculations have been made. Some even try to extrapolate the failure mechanism for shallow foundations to the failure mechanism around the tip of a pile. All this scientific work leads back to the first publication by Ludwig Prandtl in 1920.This book, “100 Years of Prandtl’s Wedge”, is intended for all those who are interested in these fundamentals of foundation engineering and their history. The Appendices include a copy of Prandtl’s Über die Härte plastischer Körper and of Reissner’s publication of 1924, Zum Erddruckproblem.

Geometric Regularization in Bioluminescence Tomography

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ISBN: 9783731501428 Year: Pages: IX, 185 p. DOI: 10.5445/KSP/1000037411 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Mathematics
Added to DOAB on : 2019-07-30 20:02:00
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Bioluminescence tomography is a recent biomedical imaging technique which allows to study molecular and cellular activities in vivo. From a mathematical point of view, it is an ill-posed inverse source problem: the location and the intensity of a photon source inside an organism have to be determined, given the photon count on the organism's surface. To face the ill-posedness of this problem, a geometric regularization approach is introduced, analyzed and numerically verified in this book.

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