Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Light Adaptation And Applications For A Fly Eye Vision Sensor
Download Light Adaptation And Applications For A Fly Eye Vision Sensor full books in PDF, epub, and Kindle. Read online Light Adaptation And Applications For A Fly Eye Vision Sensor ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Light Adaptation and Applications for a Fly Eye Vision Sensor by : Brian K. Dean
Download or read book Light Adaptation and Applications for a Fly Eye Vision Sensor written by Brian K. Dean and published by . This book was released on 2012 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research efforts in mimicking the compound eye of Musca domestica, the common house fly, in hardware have primarily been focused on optical designs to achieve the fast, analog, parallel processing and motion hyperacuity properties of the biological system. While these optical platforms have shown promising results, nearly all proposed advantages of utilizing a fly-inspired sensor have been discovered through the use of software simulation with very little or no effort being made to validate these simulations using the actual fly-inspired optics. In effect, these simulations can be viewed as the first step into mimicking the function of the intermediate neural layer structure (the lamina) of the fly's visual system. The lamina is believed to perform preprocessing on image data, extracting motion and object information from the scene before sending it to the brain. The work presented in this dissertation advances the frontier of compound vision research by mimicking the function of the lamina structure in hardware. The hardware designs were kept as biomimetic as possible: no system clocks were used, system-wide parallel operation was never violated, and discrete-time (digital) solutions were not considered unless absolutely necessary. In addition, the unique motion hyperacuity characteristic of Musca's visual system was preserved in each circuit design. The specific lamina functions that were mimicked in device-level electronics are the light adaptation process and a software proposed edge detection process. It will be shown that an effective light adaptation system can be designed that is both analog and parallel by directly mimicking the fly's visual system. It will also be shown that the edge detection system can be designed to utilize the underlying structure that allows for motion hyperacuity to improve the accuracy of locating small linear objects such as power lines. The proof-of-concept designs presented in this dissertation are an important first step in turning the novel compound optical designs of the past decade into useful sensors that can function in dynamic real-world environments and that are capable of on-board biomimetic image processing.
Book Synopsis Design and Applications for a Multi-cartridge Fly Eye Vision Sensor by :
Download or read book Design and Applications for a Multi-cartridge Fly Eye Vision Sensor written by and published by . This book was released on 2019 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research efforts have shown that the compound vision system of a common house fly, Musca domestica, is capable of improved motion detection and tracking capabilities when compared to traditional camera systems. Especially in applications requiring object detection, obstacle avoidance, and quick visual data processing, these compound vision sensors are more suitable as compared to the usual mammalian inspired vision systems. Proof-of-concept has shown that even without using a computer processing system, existing compound vision sensors can mimic the motion hyperacuity characteristic of the fly's visual system and at the same time provide near instantaneous edge detection and motion tracking. However, the existing sensor design consists of seven photodiodes which generate artifacts in the output signal. This type of sensor design has been implemented in analog circuitry and was found to have limited capability to detect different types of edges. Therefore, to advance the state-of-art of existing fly eye vision sensors, certain design changes were done in this work to avoid these signal artifacts. Moreover, a digital equivalent of the existing analog circuitry has been designed and tested without losing the motion hyperactivity characteristic of the sensor. Furthermore, for the existing seven photodiode sensor designs, an improved edge detection algorithm has been designed that correctly classifies horizontal and vertical edges as the previous design could but can now also correctly detect and classify diagonal edges. Taking a step further, a multi-cartridge sensor design has been proposed that can further enhance the sensor's capability to detect single edges as well as correctly classify the corners present in the sensor's field-of-view.
Book Synopsis Musca Domestica Inspired Vision Sensor Cartridge Modeling by : Kari R. Strube
Download or read book Musca Domestica Inspired Vision Sensor Cartridge Modeling written by Kari R. Strube and published by . This book was released on 2009 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt: Musca domestica, the common house fly, has a very simple yet powerful vision system. Fly-inspired vision sensors have been developed that display many interesting qualities, such as extreme sensitivity to motion, outstanding edge detection capabilities, and hyperacuity. The Wyoming Information, Signal Processing, and Robotics (WISPR) Laboratories have an on-going research effort to apply lessons learned from the fly's vision system towards the development of novel analog vision sensors. The research efforts described in this thesis contribute new finding to both the electrophysiology and sensor development areas of the WISPR project by accomplishing the following: analyzing the electrophysiology instrumentation and modeling some fly inspired features at the cartridge level. The analysis of the instrumentation verifies the stimuli provided to the fly during electrophysiology recording. This work is critical in the proper analysis of previously captured electrophysiology recordings. Additionally, the model of the cartridge structure within the fly's vision system has been augmented to include sensor orientation, light adaptation, lateral inhibition, and spot location features. These enhancements will guide the design and development of the next generation of physical sensors.
Book Synopsis Engineered Biomimicry by : Akhlesh Lakhtakia
Download or read book Engineered Biomimicry written by Akhlesh Lakhtakia and published by Newnes. This book was released on 2013-05-24 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineered Biomimicry covers a broad range of research topics in the emerging discipline of biomimicry. Biologically inspired science and technology, using the principles of math and physics, has led to the development of products as ubiquitous as VelcroTM (modeled after the spiny hooks on plant seeds and fruits). Readers will learn to take ideas and concepts like this from nature, implement them in research, and understand and explain diverse phenomena and their related functions. From bioinspired computing and medical products to biomimetic applications like artificial muscles, MEMS, textiles and vision sensors, Engineered Biomimicry explores a wide range of technologies informed by living natural systems. Engineered Biomimicry helps physicists, engineers and material scientists seek solutions in nature to the most pressing technical problems of our times, while providing a solid understanding of the important role of biophysics. Some physical applications include adhesion superhydrophobicity and self-cleaning, structural coloration, photonic devices, biomaterials and composite materials, sensor systems, robotics and locomotion, and ultra-lightweight structures. Explores biomimicry, a fast-growing, cross-disciplinary field in which researchers study biological activities in nature to make critical advancements in science and engineering Introduces bioinspiration, biomimetics, and bioreplication, and provides biological background and practical applications for each Cutting-edge topics include bio-inspired robotics, microflyers, surface modification and more
Book Synopsis Engineered Biomimicry by : Cameron H.G. Wright
Download or read book Engineered Biomimicry written by Cameron H.G. Wright and published by Elsevier Inc. Chapters. This book was released on 2013-05-24 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter is focused on vision sensors based on both mammalian and insect vision systems. Typically, the former uses a single large-aperture lens system and a large, high-resolution focal plane array; the latter uses many small-aperture lenses, each coupled to a small group of photodetectors. The strengths and weaknesses of each type of design are discussed, along with some guidelines for designing such sensors. A brief review of basic optical engineering, including simple diffraction theory and mathematical tools such as Fourier optics, is followed by a demonstration of how to match an optical system to some collection of photodetectors. Modeling and simulations performed with tools such as Zemax and MATLAB® are described for better understanding of both optical and neural aspects of biological vision systems and how they may be adapted to an artificial vision sensor. A biomimetic vision system based on the common housefly, Musca domestica, is discussed.
Download or read book Sensory Adaptation written by Mehdi Adibi and published by Frontiers Media SA. This book was released on 2022-01-27 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Behavioral Genetics of the Fly (Drosophila Melanogaster) by : Josh Dubnau
Download or read book Behavioral Genetics of the Fly (Drosophila Melanogaster) written by Josh Dubnau and published by Cambridge University Press. This book was released on 2014-06-26 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive portrayal of the behaviour genetics of the fruit fly (Drosophila melanogaster) and the methods used in these studies.
Book Synopsis Comparative Physiology and Evolution of Vision in Invertebrates by : Hansjochem Autrum
Download or read book Comparative Physiology and Evolution of Vision in Invertebrates written by Hansjochem Autrum and published by . This book was released on 1979 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoreceptor Optics by : A.W. Snyder
Download or read book Photoreceptor Optics written by A.W. Snyder and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: The above consideration indicates that at present many of the experi mental facts on PS in animals can be quantitatively explained within the limits of the "universal" photoreceptor membrane concept. Of course, existence of preferential orientation of the absorbing dipoles in the tubuli of the rhabdomeres can not be totally rejected. We hope that the concept of the "universal" photoreceptor membrane may serve as the useful instrument when dealing with newly discovered properties of visual cells so that true mechanisms of electrical and optical coupling will be searched for instead of assumptions being made on additional properties of the photoreceptor membrane in every new animal under study. 5. Absorption Spectrum of the Universal Photoreceptor Membrane and Spectral Sensitivity of the Photoreceptor 5. 1 Preliminary Notes It seems nearly self-evident that the absorption spectrum of the pho toreceptor membrane coincides exactly with that of the visual pigment it contains. Hence, the membrane must exhibit three bands of absorp tion - the principal band with its peak within the limits of visible spectrum (or a-peak); the secondary band between 340 and 380 nm (S peak); and the third, protein band, in the ultraviolet (UV) at 280 nm (COLLINS et al. , 1952). The main peak of absorption is located within the range 433-575 nm for retinol-based pigments and between 438 and 620 nm for 3-dehydroretinol-based pigments, the position of Amax de pending on many ecological factors.
Book Synopsis The Discovery of a Visual System by : Adrian Horridge
Download or read book The Discovery of a Visual System written by Adrian Horridge and published by CABI. This book was released on 2019-05-23 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the only account of what honeybees actually see. Bees detect some visual features such as edges and colours, but there is no sign that they reconstruct patterns or put together features to form objects. Bees detect motion but have no perception of what it is that moves, and certainly they do not recognize "things" by their shapes. Yet they clearly see well enough to fly and find food with a minute brain. Bee vision is therefore relevant to the construction of simple artificial visual systems, for example for mobile robots. The surprising conclusion is that bee vision is adapted to the recognition of places, not things. In this volume, Adrian Horridge also sets out the curious and contentious history of how bee vision came to be understood, with an account of a century of neglect of old experimental results, errors of interpretation, sharp disagreements, and failures of the scientific method. The design of the experiments and the methods of making inferences from observations are also critically examined, with the conclusion that scientists are often hesitant, imperfect and misleading, ignore the work of others, and fail to consider alternative explanations. The erratic path to understanding makes interesting reading for anyone with an interest in the workings of science but particularly those researching insect vision and invertebrate sensory systems.
Book Synopsis Studies of Vision by : Norma A. Mejía-Monasterio
Download or read book Studies of Vision written by Norma A. Mejía-Monasterio and published by . This book was released on 1996 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animal Eyes written by Michael F. Land and published by Oxford University Press. This book was released on 2012-03 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the way that all known types of eyes work, from their optics to the behaviour they guide. The ways that eyes sample the world in space and time are considered, and the evolutionary origins of eyes are discussed. This new edition incorporates discoveries made since the first edition published in 2001.
Book Synopsis Neurones Without Impulses by : Alan Roberts
Download or read book Neurones Without Impulses written by Alan Roberts and published by Cambridge University Press. This book was released on 1981-02-05 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews all known examples and considers how neurones can function without impulses.
Book Synopsis Photoreception and Vision in Invertebrates by : M. A. Ali
Download or read book Photoreception and Vision in Invertebrates written by M. A. Ali and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: I see a man's life is a tedious one. Cymbeline, Act III, Sc. 6. It is well known that the best way to learn a subject is to teach it! Along the same lines one might also say that a pleasant way of learning a subject and at the same time getting to know quite a few of the workers active in it, is to arrange and to attend an Advanced Study Institute (ASI) or a workshop lasting about two weeks. This was and is the wisdom behind the NA TO-ASI programme and much as people fear that a fortnight may be too long, before it is over everyone feels that it was too short, especially if the weather had cooperated. Organising this ASI which resulted in this volume has been a very good learning experience. I started my career in research with invertebrates and retained an interest in them over the years due to my teaching a course and working sporadically on various aspects of photoreception in Polychaetes, Crustaceans and Insects. Thus, the thought of organising an ASI on photoreception and vision in invertebrates had been brewing in my mind for the past half a dozen years or so. It was felt that it will be desirable to do a bit of stock taking and discuss possible new approaches to the study of this matter.
Book Synopsis Visual Ecology by : Thomas W. Cronin
Download or read book Visual Ecology written by Thomas W. Cronin and published by Princeton University Press. This book was released on 2014-08-10 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatment of visual ecology Visual ecology is the study of how animals use visual systems to meet their ecological needs, how these systems have evolved, and how they are specialized for particular visual tasks. Visual Ecology provides the first up-to-date synthesis of the field to appear in more than three decades. Featuring some 225 illustrations, including more than 140 in color, spread throughout the text, this comprehensive and accessible book begins by discussing the basic properties of light and the optical environment. It then looks at how photoreceptors intercept light and convert it to usable biological signals, how the pigments and cells of vision vary among animals, and how the properties of these components affect a given receptor's sensitivity to light. The book goes on to examine how eyes and photoreceptors become specialized for an array of visual tasks, such as navigation, evading prey, mate choice, and communication. A timely and much-needed resource for students and researchers alike, Visual Ecology also includes a glossary and a wealth of examples drawn from the full diversity of visual systems. The most up-to-date overview of visual ecology available Features some 225 illustrations, including more than 140 in color, spread throughout the text Guides readers from the basic physics of light to the role of visual systems in animal behavior Includes a glossary and a wealth of real-world examples
Book Synopsis Invertebrate Vision by : Eric Warrant
Download or read book Invertebrate Vision written by Eric Warrant and published by Cambridge University Press. This book was released on 2006-10-05 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher description
Book Synopsis Light adaptation mechanisms in spatial vision by : Philip Ted Kortum
Download or read book Light adaptation mechanisms in spatial vision written by Philip Ted Kortum and published by . This book was released on 1994 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
