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Author : Christian Unger
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (874 download)
Download or read book Contributions to Stereo Vision written by Christian Unger and published by . This book was released on 2013 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Scharstein
Publisher : Springer
ISBN 13 : 3540487255
Total Pages : 173 pages
Book Rating : 4.5/5 (44 download)
Download or read book View Synthesis Using Stereo Vision written by Daniel Scharstein and published by Springer. This book was released on 2003-06-29 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Image-based rendering, as an area of overlap between computer graphics and computer vision, uses computer vision techniques to aid in sythesizing new views of scenes. Image-based rendering methods are having a substantial impact on the field of computer graphics, and also play an important role in the related field of multimedia systems, for applications such as teleconferencing, remote instruction and surgery, virtual reality and entertainment. The book develops a novel way of formalizing the view synthesis problem under the full perspective model, yielding a clean, linear warping equation. It shows new techniques for dealing with visibility issues such as partial occlusion and "holes". Furthermore, the author thoroughly re-evaluates the requirements that view synthesis places on stereo algorithms and introduces two novel stereo algorithms specifically tailored to the application of view synthesis.
Author : Brunken, Hauke
Publisher : Universitätsverlag der TU Berlin
ISBN 13 : 3798332053
Total Pages : 188 pages
Book Rating : 4.7/5 (983 download)
Download or read book Stereo vision-based road condition monitoring written by Brunken, Hauke and published by Universitätsverlag der TU Berlin. This book was released on 2021-05-12 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: When planning road construction measures, it is essential to have up-to-date information on road conditions. If this information is not to be obtained manually, it is currently obtained using laser scanners mounted on mobile mapping vehicles, which can measure the 3D road profile. However, a large number of mobile mapping vehicles would be necessary to record an entire road network on a regular basis. Since 2D road damages can be found automatically on monocular camera images, the idea was born to use a stereo camera system to capture the 3D profile of roads. With stereo camera systems, it would be possible to equip a large number of vehicles and regularly collect data from large road networks. In this thesis, the potential applications of a stereo camera system for measuring road profiles, which is mounted behind the windshield of a vehicle, are investigated. Since this requires a calibration of the stereo camera system, but the effort for the user should be kept low, the camera self-calibration for this application is also examined. 3D reconstruction from stereoscopic images is a well-studied topic, but its application on road surfaces with little and repetitive textures requires special algorithms. For this reason, a new stereo method was developed. It is based on the plane-sweep approach in combination with semi-global matching. It was tested with different measures for pixel comparison. Furthermore, the plane-sweep approach was implemented in a neural network that solves the stereo correspondence problem in a single step. It uses the stereoscopic images as input and provides an elevation image as output. A completely new approach was developed for the self-calibration of mono cameras and stereo camera systems. Previous methods search for feature points in several images of the same scene. The points are matched between the images and used for the calibration. In contrast to these methods, the proposed method uses feature maps instead of feature points to compare multiple views of one and the same plane. To estimate the unknown parameters, the backpropagation algorithm is used together with the gradient descent method. The measurements obtained by stereoscopic image processing were compared with those obtained by industrial laser scanners. They show that both measurements are very close to each other and that a stereoscopic camera system is in principle suitable for capturing the surface profile of a road. Experiments show that the proposed self-calibration method is capable of estimating all parameters of a complex camera model, including lens distortion, with high precision. Bei der Planung von Straßenbaumaßnahmen ist es unabdingbar, über aktuelle Informationen über den Straßenzustand zu verfügen. Sollen diese Informationen nicht manuell gewonnen werden, werden derzeit Messfahrzeug mit Laserscannern verwendet, welche das 3D-Straßenprofil vermessen können. Für die regelmäßige Erfassung eines gesamten Straßennetzes wäre jedoch eine große Anzahl von Messfahrzeugen erforderlich. Da 2D-Straßenschäden automatisch auf monokularen Kamerabildern gefunden werden können, entstand die Idee, ein Stereokamerasystem zur Erfassung des 3D-Profils zu verwenden. Eine große Anzahl von Fahrzeugen könnte damit ausgerüstet werden und es könnten regelmäßig Daten von großen Straßennetzen erfasst werden. In dieser Arbeit werden die Einsatzmöglichkeiten eines Stereokamerasystems zur Messung von Straßenprofilen untersucht, dass sich hinter der Windschutzscheibe eines Fahrzeugs befindet. Da hierzu das Stereokamerasystems kalibriert sein muss, der Aufwand für den Anwender aber geringgehalten werden soll, wird außerdem die Selbstkalibrierung für diesen Einsatzzweck untersucht. Die 3D-Rekonstruktion aus stereoskopischen Bildern ist ein viel untersuchtes Thema, aber ihre Anwendung auf Straßenoberflächen mit wenig und sich wiederholenden Texturen erfordert spezielle Algorithmen. Aus diesem Grund wurde ein neues Stereoverfahren entwickelt. Es basiert auf dem Plane-sweep-Ansatz in Kombination mit Semi-global Matching. Es wurde mit verschiedene Maßen für den Vergleich von Pixeln getestet. Darüber hinaus wurde der Plane-sweep-Ansatz in einem neuronalen Netzwerk implementiert, das das Stereo-Korrespondenzproblem in einem einzigen Schritt löst. Es verwendet die stereoskopischen Bilder als Eingabe und liefert als Ausgabe ein Höhenbild. Für die Selbstkalibrierung von Monokameras und Stereokamerasystemen wurde ein völlig neuer Ansatz entwickelt. Bisherige Methoden suchen nach Merkmalspunkten in mehreren Bildern der gleichen Szene. Die Punkte werden zwischen den Bildern zugeordnet und für die Kalibrierung verwendet. Die vorgeschlagene Methode verwendet anstelle von Merkmalspunkten Feature-Maps um mehrere Ansichten derselben Ebene zu vergleichen. Zur Schätzung der unbekannten Parameter wird der Backpropagation-Algorithmus zusammen mit dem Gradientenabstiegsverfahren verwendet. Die durch stereoskopische Bildverarbeitung erhaltenen Messungen wurden mit Messungen von industriellen Laserscannern verglichen. Sie zeigen, dass beide sehr nahe beieinander liegen und dass ein Stereokamerasystem für die Erfassung des Oberflächenprofils einer Straße grundsätzlich geeignet ist. Experimente zeigen, dass die neue Selbstkalibrierungsmethode in der Lage ist, alle Parameter eines komplexen Kameramodells, einschließlich der Linsenverzerrung, mit hoher Präzision abzuschätzen.
Author : Asim Bhatti
Publisher : BoD – Books on Demand
ISBN 13 : 9537619222
Total Pages : 383 pages
Book Rating : 4.5/5 (376 download)
Download or read book Stereo Vision written by Asim Bhatti and published by BoD – Books on Demand. This book was released on 2008-11-01 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book comprehensively covers almost all aspects of stereo vision. In addition reader can find topics from defining knowledge gaps to the state of the art algorithms as well as current application trends of stereo vision to the development of intelligent hardware modules and smart cameras. It would not be an exaggeration if this book is considered to be one of the most comprehensive books published in reference to the current research in the field of stereo vision. Research topics covered in this book makes it equally essential and important for students and early career researchers as well as senior academics linked with computer vision.
Author : Malik, Aamir Saeed
Publisher : IGI Global
ISBN 13 : 161350327X
Total Pages : 647 pages
Book Rating : 4.6/5 (135 download)
Download or read book Depth Map and 3D Imaging Applications: Algorithms and Technologies written by Malik, Aamir Saeed and published by IGI Global. This book was released on 2011-11-30 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade, significant progress has been made in 3D imaging research. As a result, 3D imaging methods and techniques are being employed for various applications, including 3D television, intelligent robotics, medical imaging, and stereovision. Depth Map and 3D Imaging Applications: Algorithms and Technologies present various 3D algorithms developed in the recent years and to investigate the application of 3D methods in various domains. Containing five sections, this book offers perspectives on 3D imaging algorithms, 3D shape recovery, stereoscopic vision and autostereoscopic vision, 3D vision for robotic applications, and 3D imaging applications. This book is an important resource for professionals, scientists, researchers, academics, and software engineers in image/video processing and computer vision.
Author : Pablo Artal
Publisher : CRC Press
ISBN 13 : 1482237938
Total Pages : 392 pages
Book Rating : 4.4/5 (822 download)
Download or read book Handbook of Visual Optics, Volume Two written by Pablo Artal and published by CRC Press. This book was released on 2017-02-24 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Visual Optics offers an authoritative overview of encyclopedic knowledge in the field of physiological optics. It builds from fundamental concepts to the science and technology of instruments and practical procedures of vision correction, integrating expert knowledge from physics, medicine, biology, psychology, and engineering. The chapters comprehensively cover all aspects of modern study and practice, from optical principles and optics of the eye and retina to novel ophthalmic tools for imaging and visual testing, devices and techniques for visual correction, and the relationship between ocular optics and visual perception.
Author : Ian P. Howard
Publisher : Oxford University Press
ISBN 13 : 0199877351
Total Pages : 642 pages
Book Rating : 4.1/5 (998 download)
Download or read book Perceiving in Depth, Volume 2: Stereoscopic Vision written by Ian P. Howard and published by Oxford University Press. This book was released on 2012-01-27 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three-volume work Perceiving in Depth is a sequel to Binocular Vision and Stereopsis and to Seeing in Depth, both by Ian P. Howard and Brian J. Rogers. This work is much broader in scope than the previous books and includes mechanisms of depth perception by all senses, including aural, electrosensory organs, and the somatosensory system. Volume 1 reviews sensory coding, psychophysical and analytic procedures, and basic visual mechanisms. Volume 2 reviews stereoscopic vision. Volume 3 reviews all mechanisms of depth perception other than stereoscopic vision. The three volumes are extensively illustrated and referenced and provide the most detailed review of all aspects of perceiving the three-dimensional world. Volume 2 addresses stereoscopic vision in cats and primates, including humans. It begins with an account of the physiology of stereoscopic mechanisms. It then deals with binocular rivalry, binocular summation, binocular masking, and the interocular transfer of visual effects, such as the motion aftereffect and visual learning. The geometry of the region in binocular space that creates fused images (the horopter) is discussed in some detail. Objects outside the horopter produce images with binocular disparities that are used for stereoscopic vision. Two chapters provide accounts of mechanisms that bring the images into binocular register and of stimulus tokens that are used to detect binocular disparities. Another chapter discusses cyclopean effects, such as cyclopean illusions, cyclopean motion, and binocular direction that are seen only with binocular vision. Stereoacuity is the smallest depth interval that can be detected. Methods of measuring stereoacuity and factors that influence it are discussed. Two chapters deal with the various types of binocular disparity and the role of each type in stereoscopic vision. Another chapter deals with visual effects, such as figure perception, motion perception, and whiteness perception that are affected by the relative distances of stimuli. The spatiotemporal aspects of stereoscopic vision, including the Pulfrich stereomotion effect are reviewed. The volume ends with an account of techniques used to create stereoscopic displays and of the applications of stereoscopy.
Author : Schoenbein, Miriam
Publisher : KIT Scientific Publishing
ISBN 13 : 3731503573
Total Pages : 156 pages
Book Rating : 4.7/5 (315 download)
Download or read book Omnidirectional Stereo Vision for Autonomous Vehicles written by Schoenbein, Miriam and published by KIT Scientific Publishing. This book was released on 2015-04-22 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environment perception with cameras is an important requirement for many applications for autonomous vehicles and robots. This work presents a stereoscopic omnidirectional camera system for autonomous vehicles which resolves the problem of a limited field of view and provides a 360° panoramic view of the environment. We present a new projection model for these cameras and show that the camera setup overcomes major drawbacks of traditional perspective cameras in many applications.
Author : Pablo Artal
Publisher : CRC Press
ISBN 13 : 1482282712
Total Pages : 856 pages
Book Rating : 4.4/5 (822 download)
Download or read book Handbook of Visual Optics, Two-Volume Set written by Pablo Artal and published by CRC Press. This book was released on 2017-06-27 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Visual Optics offers an authoritative overview of encyclopedic knowledge in the field of physiological optics. It builds from fundamental concepts to the science and technology of instruments and practical procedures of vision correction, integrating expert knowledge from physics, medicine, biology, psychology, and engineering. The chapters comprehensively cover all aspects of modern study and practice, from optical principles and optics of the eye and retina to novel ophthalmic tools for imaging and visual testing, devices and techniques for visual correction, and the relationship between ocular optics and visual perception.
Author : Jose R.A. Torreao
Publisher : BoD – Books on Demand
ISBN 13 : 9533078375
Total Pages : 131 pages
Book Rating : 4.5/5 (33 download)
Download or read book Advances in Stereo Vision written by Jose R.A. Torreao and published by BoD – Books on Demand. This book was released on 2011-07-19 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stereopsis is a vision process whose geometrical foundation has been known for a long time, ever since the experiments by Wheatstone, in the 19th century. Nevertheless, its inner workings in biological organisms, as well as its emulation by computer systems, have proven elusive, and stereo vision remains a very active and challenging area of research nowadays. In this volume we have attempted to present a limited but relevant sample of the work being carried out in stereo vision, covering significant aspects both from the applied and from the theoretical standpoints.
Author : Li Zhaoping
Publisher : OUP Oxford
ISBN 13 : 0191008303
Total Pages : 397 pages
Book Rating : 4.1/5 (91 download)
Download or read book Understanding Vision written by Li Zhaoping and published by OUP Oxford. This book was released on 2014-05-08 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the field of vision science has grown significantly in the past three decades, there have been few comprehensive books that showed readers how to adopt a computional approach to understanding visual perception, along with the underlying mechanisms in the brain. Understanding Vision explains the computational principles and models of biological visual processing, and in particular, of primate vision. The book is written in such a way that vision scientists, unfamiliar with mathematical details, should be able to conceptually follow the theoretical principles and their relationship with physiological, anatomical, and psychological observations, without going through the more mathematical pages. For those with a physical science background, especially those from machine vision, this book serves as an analytical introduction to biological vision. It can be used as a textbook or a reference book in a vision course, or a computational neuroscience course for graduate students or advanced undergraduate students. It is also suitable for self-learning by motivated readers. in addition, for those with a focused interest in just one of the topics in the book, it is feasible to read just the chapter on this topic without having read or fully comprehended the other chapters. In particular, Chapter 2 presents a brief overview of experimental observations on biological vision; Chapter 3 is on encoding of visual inputs, Chapter 5 is on visual attentional selection driven by sensory inputs, and Chapter 6 is on visual perception or decoding. Including many examples that clearly illustrate the application of computational principles to experimental observations, Understanding Vision is valuable for students and researchers in computational neuroscience, vision science, machine and computer vision, as well as physicists interested in visual processes.
Author : Charles Francis Himes
Publisher :
ISBN 13 :
Total Pages : 49 pages
Book Rating : 4.:/5 (621 download)
Download or read book Theory, History, and Construction of the Stereoscope written by Charles Francis Himes and published by . This book was released on 1872 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Asim Bhatti
Publisher : BoD – Books on Demand
ISBN 13 : 9533075163
Total Pages : 367 pages
Book Rating : 4.5/5 (33 download)
Download or read book Advances in Theory and Applications of Stereo Vision written by Asim Bhatti and published by BoD – Books on Demand. This book was released on 2011-01-08 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a wide range of innovative research ideas and current trends in stereo vision. The topics covered in this book encapsulate research trends from fundamental theoretical aspects of robust stereo correspondence estimation to the establishment of novel and robust algorithms as well as applications in a wide range of disciplines. Particularly interesting theoretical trends presented in this book involve the exploitation of the evolutionary approach, wavelets and multiwavelet theories, Markov random fields and fuzzy sets in addressing the correspondence estimation problem. Novel algorithms utilizing inspiration from biological systems (such as the silicon retina imager and fish eye) and nature (through the exploitation of the refractive index of liquids) make this book an interesting compilation of current research ideas.
Author : Tao Jiang
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 383254285X
Total Pages : 124 pages
Book Rating : 4.8/5 (325 download)
Download or read book Stereo Vision for Facet Type Cameras written by Tao Jiang and published by Logos Verlag Berlin GmbH. This book was released on 2016-07-11 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dissertation mainly studies a novel method of subpixel stereo vision for Electronic cluster eye (eCley), a state-of-the-art artificial superposition compound eye with super resolution. In the whole thesis, The author mainly deduce the mathematical model of stereo vision in eCley theoretically based on its special structure, discuss the optical correction and geometric calibration that are essential to high precision measurement, study the implementation of methods of the subpixel baselines for each pixel pair based on intensity information and gradient information in transitional areas, and eventually implement real-time subpixel distance measurement for objects through these edge features. To verify the various methods adopted, and to analyze the precision of these methods, experiments are implemented in many practical scenes. This stereo vision method extends the ability of perceiving 3D information in eCley, and makes it applicable to more comprehensive fields such as 3D object position, distance measurement, and 3D reconstruction.
Author : Andrew Higgott
Publisher : Routledge
ISBN 13 : 1351953508
Total Pages : 525 pages
Book Rating : 4.3/5 (519 download)
Download or read book Camera Constructs written by Andrew Higgott and published by Routledge. This book was released on 2016-12-05 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photography and architecture have a uniquely powerful resonance - architectural form provides the camera with the subject for some of its most compelling imagery, while photography profoundly influences how architecture is represented, imagined and produced. Camera Constructs is the first book to reflect critically on the varied interactions of the different practices by which photographers, artists, architects, theorists and historians engage with the relationship of the camera to architecture, the city and the evolution of Modernism. The title thus on the one hand opposes the medium of photography and the materiality of construction - but on the other can be read as saying that the camera invariably constructs what it depicts: the photograph is not a simple representation of an external reality, but constructs its own meanings and reconstructs its subjects. Twenty-three essays by a wide range of historians and theorists are grouped under the themes of ’Modernism and the Published Photograph’, ’Architecture and the City Re-imagined’, ’Interpretative Constructs’ and ’Photography in Design Practices.’ They are preceded by an Introduction that comprehensively outlines the subject and elaborates on the diverse historical and theoretical contexts of the authors’ approaches. Camera Constructs provides a rich and highly original analysis of the relationship of photography to built form from the early modern period to the present day.
Author : Wolfgang Prinz
Publisher : Academic Press
ISBN 13 : 0125161611
Total Pages : 474 pages
Book Rating : 4.1/5 (251 download)
Download or read book Handbook of Perception and Action: Perception written by Wolfgang Prinz and published by Academic Press. This book was released on 1995 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume combines the classical fields of perception research with the major theoretical attitudes of today's research, distinguishing between experience- versus performance-related approaches, transformational versus interactional approaches, and approaches that rely on the processing versus discovery of information. Perception is separated into two parts. The first part deals with basic processes and mechanisms, and discusses early vision and later, yet still basic, vision. The second covers complex achievements with accounts of perceptual constancies and the perception of patterns, objects, events, and actions.
Author : Susan R. Barry
Publisher : Basic Books
ISBN 13 : 078674474X
Total Pages : 272 pages
Book Rating : 4.7/5 (867 download)
Download or read book Fixing My Gaze written by Susan R. Barry and published by Basic Books. This book was released on 2009-05-26 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A revelatory account of the brain's capacity for change When neuroscientist Susan Barry was fifty years old, she experienced the sense of immersion in a three dimensional world for the first time. Skyscrapers on street corners appeared to loom out toward her like the bows of giant ships. Tree branches projected upward and outward, enclosing and commanding palpable volumes of space. Leaves created intricate mosaics in 3D. Barry had been cross-eyed and stereoblind since early infancy. After half a century of perceiving her surroundings as flat and compressed, on that day she saw the city of Manhattan in stereo depth for first time in her life. As a neuroscientist, she understood just how extraordinary this transformation was, not only for herself but for the scientific understanding of the human brain. Scientists have long believed that the brain is malleable only during a "critical period" in early childhood. According to this theory, Barry's brain had organized itself when she was a baby to avoid double vision - and there was no way to rewire it as an adult. But Barry found an optometrist who prescribed a little-known program of vision therapy; after intensive training, Barry was ultimately able to accomplish what other scientists and even she herself had once considered impossible. Dubbed "Stereo Sue" by renowned neurologist Oliver Sacks, Susan Barry tells her own remarkable journey and celebrates the joyous pleasure of our senses.
