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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Applied optics > General

Compressive Imaging: Structure, Sampling, Learning (Hardcover): Ben Adcock, Anders C. Hansen Compressive Imaging: Structure, Sampling, Learning (Hardcover)
Ben Adcock, Anders C. Hansen
R1,464 Discovery Miles 14 640 Ships in 7 - 11 working days

Accurate, robust and fast image reconstruction is a critical task in many scientific, industrial and medical applications. Over the last decade, image reconstruction has been revolutionized by the rise of compressive imaging. It has fundamentally changed the way modern image reconstruction is performed. This in-depth treatment of the subject commences with a practical introduction to compressive imaging, supplemented with examples and downloadable code, intended for readers without extensive background in the subject. Next, it introduces core topics in compressive imaging - including compressed sensing, wavelets and optimization - in a concise yet rigorous way, before providing a detailed treatment of the mathematics of compressive imaging. The final part is devoted to recent trends in compressive imaging: deep learning and neural networks. With an eye to the next decade of imaging research, and using both empirical and mathematical insights, it examines the potential benefits and the pitfalls of these latest approaches.

An Introduction to Metamaterials and Nanophotonics (Hardcover): Constantin Simovski, Sergei Tretyakov An Introduction to Metamaterials and Nanophotonics (Hardcover)
Constantin Simovski, Sergei Tretyakov
R1,353 Discovery Miles 13 530 Ships in 7 - 11 working days

Metamaterials have established themselves as one of the most important topics in physics and engineering, and have found practical application across a wide variety of fields including photonics, condensed matter physics, materials science, and biological and medical physics. This modern and self-contained text delivers a pedagogical treatment of the topic, rooted within the fundamental principles of nanophotonics. A detailed and unified description of metamaterials and metasurfaces is developed, beginning with photonic crystals and their underlying electromagnetic properties before introducing plasmonic effects and key metamaterial configurations. Recent developments in research are also presented along with cutting-edge applications in the field. This advanced textbook will be invaluable to students and researchers working in the fields of optics and nanophotonics.

Theoretical Foundations of Nanoscale Quantum Devices (Hardcover): Malin Premaratne, Govind P. Agrawal Theoretical Foundations of Nanoscale Quantum Devices (Hardcover)
Malin Premaratne, Govind P. Agrawal
R1,331 Discovery Miles 13 310 Ships in 7 - 11 working days

Nanooptics which describes the interaction of light with matter at the nanoscale, is a topic of great fundamental interest to physicists and engineers and allows the direct observation of quantum mechanical phenomena in action. This self-contained and extensively referenced text describes the underlying theory behind nanodevices operating in the quantum regime for use both in advanced courses and as a reference for researchers in physics, chemistry, electrical engineering, and materials science. Presenting an extensive theoretical toolset for design and analysis of nanodevices, the authors demonstrate the art of developing approximate quantum models of real nanodevices. The rudimentary mathematical knowledge required to master the material is carefully introduced, with detailed derivations and frequent worked examples allowing readers to gain a thorough understanding of the material. More advanced applications are gradually introduced alongside analytical approximations and simplifying assumptions often used to make such problems tractable while representative of the observed features.

Digital Analysis of Remotely Sensed Imagery (Hardcover): Jay Gao Digital Analysis of Remotely Sensed Imagery (Hardcover)
Jay Gao
R3,140 Discovery Miles 31 400 Ships in 7 - 11 working days

"Jay Gao's book on the analysis of remote sensing imagery is a well-written, easy-to-read, and informative text best serving graduate students in geosciences, and practitioners in the field of digital image analysis. Although Dr. Gao states that he has targeted his book at upper-level undergraduates and lower-level postgraduate students, its rigor and depth of mathematical analysis would challenge most students without prior experience in remote sensing and college-level mathematics. The book covers a lot of ground quickly, beginning with a basic explanation of pixels, digital numbers and histograms and advancing rapidly through a description of the most well-known satellite systems to data storage formats, rectification and classification. It best serves students who have already taken an introductory course in remote sensing. Following a three-chapter description of the basics the remaining eleven chapters are dedicated to the description of the most common image processing systems and the details of the image analysis functions which can be carried out. The largest portion of the text covers classification - spectral and spatial, neural networks, decision trees and expert systems - and is an invaluable reference to anyone interested in understanding image analysis terminology and the algorithms behind these different systems. The last chapter of the text is addressed to practitioners wishing to integrate remote sensing image data with GIS and/or GPS data. The text is nicely structured so that individual chapters can easily be skipped when their content is not of interest to the reader without impairing the understanding of later chapters.

"The first three chapters of the book cover introductory material that the reader should be familiar with for the most part, but also includes a very handy summary of today's satellite systems. Chapter one addresses basic material, such as pixel DN, coordinates, feature space, histograms, and spatial, spectral, temporal and radiometric resolution normally covered in an introductory course in remote sensing. Chapter two presents a very informative and up-to-date overview of today's satellite instruments including meteorological, oceanographic, earth resources, hyperspectral and radar instruments. Instrument and orbital parameters are presented in tabular form and make it easy to look up technical details such as spectral and spatial resolution, orbit type, repeat cycle and other instrument characteristics quickly. Written explanations are clear, readable and provide lots of interesting insight and useful tidbits of information such as potential problems and the cost of imagery. For technicians and programmers the third chapter provides details on storage formats, including descriptions of BSQ, BIL and BIP binary formats, and the most common graphics formats like GIF, TIFF and JPEG together with data compression techniques. Non-technicians can skip this chapter since image processing software will generally take care of format conversions internally without a need for understanding the nuances of each.

"Chapters four will be of interest to anyone considering the purchase of image processing software, or trying to understand the differences between systems. Gao provides a useful overview of existing software - IDRISI, ERDAS Imagine, ENVI, ER Mapper, PCI, eCognition and GRASS. A brief history of each provides useful background, and a discussion of the features of each together with a comparison (also given in tabular form) is informative to anyone considering a purchase.

"Chapter five can also be viewed as a stand-alone reference on rectification, but also serves as an excellent overview of the problems of dealing with mapping on a curved surface and has particular application for geographers and cartographers. It discusses the sources of geometric distortion, coordinated systems and projections, how image rectification is done - including the use of ground control points and implications for the order of transformation employed. There is a nice example showing how accuracy is influenced by the number of GCPs employed for SPOT and Landsat TM. For non-technical students the transformation mathematics can be skipped. A rather minimal section on image subsetting and mosaicking is included. Chapter six continues in much the same vein as the previous chapter, but discussing image enhancement - techniques that improve the visual quality of an image. The terms introduced here, such as density slicing, linear enhancement, stretching, and histogram equalization, will be familiar to users of image processing software and Gao provides a useful explanation of each in turn. Other application-oriented utilities such as band ratioing, vegetation indices, IHS and Tasseled Cap transformations and principal component analysis are presented in a form which is understandable to students with good mathematical grounding.

"The remainder of the text deals, to a large extent, with the topic of classification. Chapter seven initially discusses elements of image interpretation, but then devotes the chapter to a detailed presentation of the most common (and affordable) of these - spectral analysis. Gao presents the different algorithms used to define spectral distance, and then devotes text to a discussion of the inner workings of unsupervised classification systems. The section on supervised classification is a very useful reference for anyone undertaking this process - describing how to set about the classification process, the differences between the different classifiers, and how to choose an appropriate one. The concepts of fuzzy logic and sub-pixels classifiers are also presented briefly.

"From this point on, the text becomes much more specialized and technical and is geared towards graduate students, those carrying out research projects, and those interested in algorithmic detail. Chapter 8 is the first dealing with artificial intelligence and describes th

Imaging Optics (Hardcover): Joseph Braat, Peter Toeroek Imaging Optics (Hardcover)
Joseph Braat, Peter Toeroek
R2,008 Discovery Miles 20 080 Ships in 7 - 11 working days

This comprehensive and self-contained text presents the fundamentals of optical imaging from the viewpoint of both ray and wave optics, within a single volume. Comprising three distinct parts, it opens with an introduction to electromagnetic theory, including electromagnetic diffraction problems and how they can be solved with the aid of standard numerical methods such as RCWA or FDTD. The second part is devoted to the basic theory of geometrical optics and the study of optical aberrations inherent in imaging systems, including large-scale telescopes and high-resolution projection lenses. A detailed overview of state-of-the-art optical system design provides readers with the necessary tools to successfully use commercial optical design software. The final part explores diffraction theory and concludes with vectorial wave propagation, image formation and image detection in high-aperture imaging systems. The wide-ranging perspective of this important book provides researchers and professionals with a comprehensive and rigorous treatise on the theoretical and applied aspects of optical imaging.

High Resolution Optical Satellite Imagery (Hardcover): Ian Dowman, Karsten Jacobsen, Gottfried Konecny, Rainer Sandau High Resolution Optical Satellite Imagery (Hardcover)
Ian Dowman, Karsten Jacobsen, Gottfried Konecny, Rainer Sandau
R1,982 R1,819 Discovery Miles 18 190 Save R163 (8%) Ships in 12 - 17 working days

This is a comprehensive guide to the characteristics and use of high resolution optical images from satellite-borne sensors, concentrating on sensors designed for mapping. It considers in detail the SPOT series of satellites and sensors with a ground sample distance (GSD) of less than 15m, operational since SPOT 1 and particularly the commercial sensors launched since 1999 with GSD of less than 1m The book explains to students, anyone working in map production and scientists working in fields other than mapping, the way in which high resolution imagery is obtained and the issues which surround its collection and use. It deals progressively with the fundamentals of mapping from imagery, followed by the key features in the design of sensors and methods of data storage and transmission, including data compression. Subsequent chapters cover the sensors, calibration, sensor models and the methods of determining the orientation elements and extracting coordinates from the images. Rigorous orientation, use of rational polynomial coefficients (RPCs) and approximate methods are covered.Results from tests showing the accuracy which can be obtained, generation of digital elevations models, their accuracy and the production of orthoimages are included, as are image processing and data fusion. Finally, future missions and the issues which face further development are discussed. High Resolution Optical Satellite Imagery is written by a team of acknowledged international experts and is the only comprehensive text on the subject.

Smart CMOS Image Sensors and Applications (Hardcover): Jun Ohta Smart CMOS Image Sensors and Applications (Hardcover)
Jun Ohta
R3,462 Discovery Miles 34 620 Ships in 12 - 17 working days

Because of their high noise immunity and low static power supply drain, complementary metal-oxide-semiconductor (CMOS) devices produce less heat than other forms of logic and allow a high density of logic functions on a chip. These beneficial characteristics have fueled the use of CMOS image sensors in consumer electronics, robot vision, biotechnology, and medicine. With the introduction of smart functions in CMOS image sensors, even more versatile applications are now possible. Exploring this popular technology, Smart CMOS Image Sensors and Applications focuses on the smart functions implemented in CMOS image sensors as well as the applications of these sensors. After discussing the history of smart CMOS image sensors, the book describes the fundamental elements of CMOS image sensors. It covers some optoelectronic device physics and introduces typical CMOS image sensor structures, such as an active pixel sensor (APS). Subsequent chapters elucidate the functions and materials of smart CMOS image sensors and present examples of smart imaging. The final chapter explores various applications of smart CMOS image sensors. Several appendices supply a range of information on constants, illuminance, MOSFET characteristics, and optical resolution. This book provides a firm foundation in existing smart CMOS image sensor technology and applications, preparing you for the next phase of smart CMOS image sensors.

Girl Decoded - My Quest to Make Technology Emotionally Intelligent - and Change the Way We Interact Forever (Paperback): Rana... Girl Decoded - My Quest to Make Technology Emotionally Intelligent - and Change the Way We Interact Forever (Paperback)
Rana El Kaliouby
R240 R192 Discovery Miles 1 920 Save R48 (20%) Ships in 5 - 10 working days

'Bold, inspired and hopeful' Arianna Huffington, founder and CEO of Thrive Global 'Lucid and captivating' Max Tegmark, professor of physics at MIT and author of Life 3.0 A captivating memoir that chronicles one woman's mission to humanise technology and what she learns about humanity along the way. Now more than ever, we find ourselves unable to express our true feelings through technology. Whether it's a misunderstood text, an oversimplified emoji or a Skype call that leaves us feeling lonely, when most of our communication is carried out through tech, the result is a virtual world that's lacking our humanity - a society lacking in empathy. Rana el Kaliouby discovered this when she left Cairo, a newly-married, Muslim woman, to take up her place at Cambridge University to study computer science. Many thousands of miles from home, she began to develop systems to help her better connect with her family. She started to pioneer the new field of Emotional Intelligence (EI). She now runs her company, Affectiva (the industry-leader in this emerging field) that builds EI into our technology and develops systems that understand humans the way we understand one another. This is the fascinating story of her mission to humanise technology and what she learns about humanity along the way.

Optical Effects in Solids (Hardcover): David B. Tanner Optical Effects in Solids (Hardcover)
David B. Tanner
R1,633 Discovery Miles 16 330 Ships in 7 - 11 working days

An overview of the optical effects in solids, addressing the physics of various materials and their response to electromagnetic radiation. The discussion includes metals, semiconductors, superconductors, and insulators. The book begins by introducing the dielectric function into Maxwell's macroscopic equations and finding their plane-wave solution. The physics governing the dielectric function of various materials is then covered, both classically and using basic quantum mechanics. Advanced topics covered include interacting electrons, the anomalous skin effect, anisotropy, magneto-optics, and inhomogeneous materials. Each subject begins with a connection to the basic physics of the particular solid, after which the measurable optical quantities are derived. It allows the reader to connect measurements (reflectance, optical conductivity and dielectric function) with the underlying physics of solids. Methods of analysing experimental data are addressed, making this an ideal resource for students and researchers interested in solid state physics, optics, and materials science.

Electromagnetic Optics of Thin-Film Coatings - Light Scattering, Giant Field Enhancement, and Planar Microcavities (Hardcover):... Electromagnetic Optics of Thin-Film Coatings - Light Scattering, Giant Field Enhancement, and Planar Microcavities (Hardcover)
Claude Amra, Michel Lequime, Myriam Zerrad
R1,509 Discovery Miles 15 090 Ships in 12 - 17 working days

Three experts in the field of thin-film optics present a detailed and self-contained theoretical study of planar multilayers and how they can be effectively exploited in both traditional and modern applications. Starting with a discussion of the relevant electromagnetic optics, the fundamental optical properties of multilayers are introduced using an electromagnetic approach based on a direct solving of Maxwell's equations by Fourier transforms. This powerful approach is illustrated through the comprehensive description of two of the most important phenomena in multilayers, i.e. giant field enhancement in dielectric stacks and light scattering from thin-film optical filters. The same approach is extended to the description of the operation of planar microcavities and the balance of energy between radiated and trapped light. This book will be valuable to researchers, engineers and graduate students with interests in nanophotonics, optical telecommunications, observational astronomy and gravitational wave detection.

Girl Decoded - My Quest to Make Technology Emotionally Intelligent - and Change the Way We Interact Forever (Hardcover): Rana... Girl Decoded - My Quest to Make Technology Emotionally Intelligent - and Change the Way We Interact Forever (Hardcover)
Rana El Kaliouby 1
R522 R433 Discovery Miles 4 330 Save R89 (17%) Ships in 10 - 20 working days

'Rana el Kaliouby's vision for how technology should work in parallel with empathy is bold, inspired and hopeful' Arianna Huffington, founder and CEO of Thrive Global 'This lucid and captivating book by a renowned pioneer of emotion-AI tackles one of the most pressing issues of our time: How can we ensure a future where this technology empowers rather than surveils and manipulates us?' Max Tegmark, professor of physics at Massachusetts Institute of Technology and author of Life 3.0 We are entering an empathy crisis. Most of our communication is conveyed through non-verbal cues - facial expressions, tone of voice, body language - nuances that are completely lost when we interact through our smartphones and other technology. The result is a digital universe that's emotion-blind - a society lacking in empathy. Rana el Kaliouby discovered this when she left Cairo, a newly-married, Muslim woman, to take up her place at Cambridge University to study computer science. Many thousands of miles from home, she began to develop systems to help her better connect with her family. She started to pioneer the new field of Emotional Intelligence (EI). She now runs her company, Affectiva (the industry-leader in this emerging field) that builds EI into our technology and develops systems that understand humans the way we understand one another. In a captivating memoir, Girl Decoded chronicles el Kaliouby's mission to humanise technology and what she learns about humanity along the way.

Optics Demystified (Paperback, Ed): Stan Gibilisco Optics Demystified (Paperback, Ed)
Stan Gibilisco
R546 R455 Discovery Miles 4 550 Save R91 (17%) Ships in 7 - 11 working days

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. An enlightening guide to optics Are you in the dark when it comes to understanding the science of optics? Now there's a glimmer in the gloom! Optics Demystified brings this challenging topic into focus. Written in an easy-to-follow format, this practical guide begins by covering the nature of light, the electromagnetic spectrum, reflection, refraction, and color dispersion. You'll move on to common optical devices and effects, lasers, and optical data transmission technology. Industrial, medical, and military applications are discussed, as are exotic optics such as holography. Detailed examples and concise explanations make it easy to understand the material, and end-of-chapter quizzes and a final exam help reinforce learning. It's a no-brainer! You'll get: Explanations of the particle and wave theories Analysis of optical microscopes and telescopes Functional details of fiber optics A sampling of optical illusions A time-saving approach to performing better on an exam or at work Simple enough for a beginner but challenging enough for an advanced student, Optics Demystified illuminates this vital physics topic.

Applied Nonlinear Optics (Paperback): Frits Zernike, John E Midwinter Applied Nonlinear Optics (Paperback)
Frits Zernike, John E Midwinter
R268 R223 Discovery Miles 2 230 Save R45 (17%) Ships in 7 - 11 working days

Directed toward physicists and engineers interested in the device applications enabled by nonlinear optics, this text is suitable for advanced undergraduates and graduate students. Its content is presented entirely on a classical basis and requires only an elementary knowledge of quantum mechanics. 1973 edition.

The Handbook of Medical Image Perception and Techniques (Hardcover, 2nd Revised edition): Ehsan Samei, Elizabeth A. Krupinski The Handbook of Medical Image Perception and Techniques (Hardcover, 2nd Revised edition)
Ehsan Samei, Elizabeth A. Krupinski
R3,094 Discovery Miles 30 940 Ships in 12 - 17 working days

A state-of-the-art review of key topics in medical image perception science and practice, including associated techniques, illustrations and examples. This second edition contains extensive updates and substantial new content. Written by key figures in the field, it covers a wide range of topics including signal detection, image interpretation and advanced image analysis (e.g. deep learning) techniques for interpretive and computational perception. It provides an overview of the key techniques of medical image perception and observer performance research, and includes examples and applications across clinical disciplines including radiology, pathology and oncology. A final chapter discusses the future prospects of medical image perception and assesses upcoming challenges and possibilities, enabling readers to identify new areas for research. Written for both newcomers to the field and experienced researchers and clinicians, this book provides a comprehensive reference for those interested in medical image perception as means to advance knowledge and improve human health.

The Cinema in Flux - The Evolution of Motion Picture Technology from the Magic Lantern to the Digital Era (Hardcover, 1st ed.... The Cinema in Flux - The Evolution of Motion Picture Technology from the Magic Lantern to the Digital Era (Hardcover, 1st ed. 2021)
Lenny Lipton
R963 Discovery Miles 9 630 Ships in 12 - 17 working days

The first of its kind, this book traces the evolution of motion picture technology in its entirety. Beginning with Huygens' magic lantern and ending in the current electronic era, it explains cinema's scientific foundations and the development of parallel enabling technologies alongside the lives of the innovators. Product development issues, business and marketplace factors, the interaction of aesthetic and technological demands, and the patent system all play key roles in the tale. The topics are covered sequentially, with detailed discussion of the transition from the magic lantern to Edison's invention of the 35mm camera, the development of the celluloid cinema, and the transition from celluloid to digital. Unique and essential reading from a lifetime innovator in the field of cinema technology, this engaging and well-illustrated book will appeal to anyone interested in the history and science of cinema, from movie buffs to academics and members of the motion picture industry.

Optoelectronics & Photonics:Principles & Practices: International Edition (Paperback, 2nd edition): Safa Kasap Optoelectronics & Photonics:Principles & Practices: International Edition (Paperback, 2nd edition)
Safa Kasap
R1,709 Discovery Miles 17 090 Ships in 12 - 17 working days

For one-semester, undergraduate-level courses in Optoelectronics and Photonics, in the departments of electrical engineering, engineering physics, and materials science and engineering. This text takes a fresh look at the enormous developments in electo-optic devices and associated materials-such as Pockels (Lithium Niobate) modulators.

X-Rays and Extreme Ultraviolet Radiation - Principles and Applications (Hardcover, 2nd Revised edition): David Attwood, Anne... X-Rays and Extreme Ultraviolet Radiation - Principles and Applications (Hardcover, 2nd Revised edition)
David Attwood, Anne Sakdinawat
R1,517 Discovery Miles 15 170 Ships in 12 - 17 working days

With this fully updated second edition, readers will gain a detailed understanding of the physics and applications of modern X-ray and EUV radiation sources. Taking into account the most recent improvements in capabilities, coverage is expanded to include new chapters on free electron lasers (FELs), laser high harmonic generation (HHG), X-ray and EUV optics, and nanoscale imaging; a completely revised chapter on spatial and temporal coherence; and extensive discussion of the generation and applications of femtosecond and attosecond techniques. Readers will be guided step by step through the mathematics of each topic, with over 300 figures, 50 reference tables and 600 equations enabling easy understanding of key concepts. Homework problems, a solutions manual for instructors, and links to YouTube lectures accompany the book online. This is the 'go-to' guide for graduate students, researchers and industry practitioners interested in X-ray and EUV interaction with matter.

MRI Physics - Tech to Tech Explanations (Paperback): Stephen J. Powers MRI Physics - Tech to Tech Explanations (Paperback)
Stephen J. Powers
R759 Discovery Miles 7 590 Ships in 7 - 11 working days

Das Werk MRI Physics: Tech to Tech Explanations soll angehenden MRT-Spezialisten und Strahlentherapeuten, die sich auf die PrA1/4fungen zur MRT-Zertifizierung vorbereiten, dabei helfen, schwierige Konzepte und Themen schnell und einfach zu verstehen. Der nA1/4tzliche Leitfaden wurde von einem sehr erfahrenen Technologen verfasst und erklart in einer klaren und leserfreundlichen Weise, was jeder MRT-Spezialist wissen muss. Zu den Themen des Buchs zahlen Sicherheitsaspekte im Zusammenhang mit Magnetfeld und Hochfrequenz, Pulssequenzen, Artefakte, MRT-Mathematik, die besonders schwierigen Gradienten und IV-Kontrastmittel. * Grundlegende Hinweise zu Sicherheitsfragen, Protokolloptionen, kritischem Denken und Bildkontrastoptimierung * Einfache Darstellung des anspruchsvollen Themas MRT-Physik durch klare Sprache und verstandliche Erklarungen * PrA1/4fungsrelevante Inhalte fA1/4r die PrA1/4fungen der American Registry of Radiologic Technologists (ARTT) und Continuing Qualifications Requirements (CQR) * Mit zahlreichen Illustrationen und Fotos zu verschiedenen MRT-Konzepten, Pulssequenz-Design, Artefakten und der Anwendung der Konzepte im klinischen Umfeld

Handbook of Machine Vision (Hardcover): Alexander Hornberg Handbook of Machine Vision (Hardcover)
Alexander Hornberg
R4,699 R4,415 Discovery Miles 44 150 Save R284 (6%) Ships in 12 - 17 working days

With the demands of quality management and process control in an industrial environment machine vision is becoming an important issue. This handbook of machine vision is written by experts from leading companies in this field. It goes through all aspects of image acquisition and image processing. From the viewpoint of the industrial application the authors also elucidate in topics like illumination or camera calibration. Attention is paid to all hardware aspects, starting from lenses and camera systems to camera-computer interfaces. Besides the detailed hardware descriptions the necessary software is discussed with equal profoundness. This includes sections on digital image basics as well as image analysis and image processing. Finally the user is introduced to general aspects of industrial applications of machine vision, such as case studies and strategies for the conception of complete machine vision systems. With this handbook the reader will be enabled not only to understand up to date systems for machine vision but will also be qualified for the planning and evaluation of such technology.

Modern Ophthalmic Optics (Hardcover): Jose Alonso, Jose A. Gomez-Pedrero, Juan A. Quiroga Modern Ophthalmic Optics (Hardcover)
Jose Alonso, Jose A. Gomez-Pedrero, Juan A. Quiroga
R1,651 Discovery Miles 16 510 Ships in 12 - 17 working days

This book is a comprehensive account of the most recent developments in modern ophthalmic optics. It makes use of the powerful matrix formalism to describe curvature and power, providing a unified view of the optical and geometrical properties of lenses. This unified approach is applicable to the design and properties of not only spectacle lenses, but also contact and intraocular lenses (IOL). The newest developments in lens design, manufacturing and testing are discussed, with an emphasis on the description of free-form technology, which has surpassed traditional manufacturing methods and allows digital lenses to be specifically designed with the unique requirements of the user. Other important topics which are covered include modern lens materials, up-to-date lens measuring techniques, contact and intraocular lenses, progressive power lenses, low vision aids, ocular protection and coatings. Providing a broad overview of recent developments in the field, it is ideal for researchers, manufacturers and practitioners involved in ophthalmic optics.

Liquid Cell Electron Microscopy (Hardcover): Frances M. Ross Liquid Cell Electron Microscopy (Hardcover)
Frances M. Ross
R3,532 Discovery Miles 35 320 Ships in 7 - 11 working days

The first book on the topic, with each chapter written by pioneers in the field, this essential resource details the fundamental theory, applications, and future developments of liquid cell electron microscopy. This book describes the techniques that have been developed to image liquids in both transmission and scanning electron microscopes, including general strategies for examining liquids, closed and open cell electron microscopy, experimental design, resolution, and electron beam effects. A wealth of practical guidance is provided, and applications are described in areas such as electrochemistry, corrosion and batteries, nanocrystal growth, biomineralization, biomaterials and biological processes, beam-induced processing, and fluid physics. The book also looks ahead to the future development of the technique, discussing technical advances that will enable higher resolution, analytical microscopy, and even holography of liquid samples. This is essential reading for researchers and practitioners alike.

Multitemporal Remote Sensing - Methods and Applications (Hardcover, 1st ed. 2016): Yifang Ban Multitemporal Remote Sensing - Methods and Applications (Hardcover, 1st ed. 2016)
Yifang Ban
R6,779 Discovery Miles 67 790 Ships in 7 - 11 working days

Written by world renowned scientists, this book provides an excellent overview of a wide array of methods and techniques for the processing and analysis of multitemporal remotely sensed images. These methods and techniques include change detection, multitemporal data fusion, coarse-resolution time series processing, and interferometric SAR multitemporal processing, among others. A broad range of multitemporal datasets are used in their methodology demonstrations and application examples, including multispectral, hyperspectral, SAR and passive microwave data. This book features a variety of application examples covering both land and aquatic environments. Land applications include urban, agriculture, habitat disturbance, vegetation dynamics, soil moisture, land surface albedo, land surface temperature, glacier and disaster recovery. Aquatic applications include monitoring water quality, water surface areas and water fluctuation in wetland areas, spatial distribution patterns and temporal fluctuation trends of global land surface water, as well as evaluation of water quality in several coastal and marine environments. This book will help scientists, practitioners, students gain a greater understanding of how multitemporal remote sensing could be effectively used to monitor our changing planet at local, regional, and global scales.

Quaternary Capped In(Ga)As/GaAs Quantum Dot Infrared Photodetectors - From Materials to Devices (Paperback, Softcover reprint... Quaternary Capped In(Ga)As/GaAs Quantum Dot Infrared Photodetectors - From Materials to Devices (Paperback, Softcover reprint of the original 1st ed. 2018)
Sourav Adhikary, Subhananda Chakrabarti
R2,945 Discovery Miles 29 450 Ships in 7 - 11 working days

This book introduces some alternative methods for enhancing the performance of In(Ga)As/GaAs-based quantum dot infrared photodetectors (QDIPs). In(Ga)As/GaAs-based QDIPs and focal plane array (FPA) cameras have wide application in fields such as military and space science. The core of the study uses a combination of quaternary In0.21Al0.21Ga0.58As and GaAs spacer as a capping layer on In(Ga)As/GaAs quantum dots in the active region of the detector structure. For the purposes of optimization, three types of samples growths are considered with different capping thicknesses. The results presented include TEM, XRD and photoluminescence studies that compare combination barrier thickness and its effect on structural and optical properties. Compressive strain within the heterostructure, thermal stability in high temperature annealing, spectral response, shifts in PL peaks peak,and responsivity and detectivity are all considered. The results also present a narrow spectral width that was obtained by using InAs QDs which is very useful for third generation FPA camera application. The book details effect of post-growth rapid thermal annealing on device characteristics and methods to enhance responsivity and peak detectivity. The contents of this book will be useful to researchers and professionals alike.

Investigations in Computational Sarcasm (Paperback, Softcover reprint of the original 1st ed. 2018): Aditya Joshi, Pushpak... Investigations in Computational Sarcasm (Paperback, Softcover reprint of the original 1st ed. 2018)
Aditya Joshi, Pushpak Bhattacharyya, Mark J. Carman
R2,787 Discovery Miles 27 870 Ships in 7 - 11 working days

This book describes the authors' investigations of computational sarcasm based on the notion of incongruity. In addition, it provides a holistic view of past work in computational sarcasm and the challenges and opportunities that lie ahead. Sarcastic text is a peculiar form of sentiment expression and computational sarcasm refers to computational techniques that process sarcastic text. To first understand the phenomenon of sarcasm, three studies are conducted: (a) how is sarcasm annotation impacted when done by non-native annotators? (b) How is sarcasm annotation impacted when the task is to distinguish between sarcasm and irony? And (c) can targets of sarcasm be identified by humans and computers. Following these studies, the book proposes approaches for two research problems: sarcasm detection and sarcasm generation. To detect sarcasm, incongruity is captured in two ways: 'intra-textual incongruity' where the authors look at incongruity within the text to be classified (i.e., target text) and 'context incongruity' where the authors incorporate information outside the target text. These approaches use machine-learning techniques such as classifiers, topic models, sequence labelling, and word embeddings. These approaches operate at multiple levels: (a) sentiment incongruity (based on sentiment mixtures), (b) semantic incongruity (based on word embedding distance), (c) language model incongruity (based on unexpected language model), (d) author's historical context (based on past text by the author), and (e) conversational context (based on cues from the conversation). In the second part of the book, the authors present the first known technique for sarcasm generation, which uses a template-based approach to generate a sarcastic response to user input. This book will prove to be a valuable resource for researchers working on sentiment analysis, especially as applied to automation in social media.

Graphene Photonics (Hardcover): Jia-ming Liu, I-Tan Lin Graphene Photonics (Hardcover)
Jia-ming Liu, I-Tan Lin
R1,730 Discovery Miles 17 300 Ships in 12 - 17 working days

Understand the fundamental concepts, theoretical background, major experimental observations, and device applications of graphene photonics with this self-contained text. Systematically and rigorously developing each concept and theoretical model from the ground up, it guides readers through the major topics, from basic properties and band structure to electronic, optical, optoelectronic, and nonlinear optical properties, and plasmonics and photonic devices. The connections between theory, modeling, experiment, and device concepts are demonstrated throughout, and every optical process is analyzed through formal electromagnetic analysis. Suitable for both self-study and a one-semester or one-quarter course, this is the ideal text for graduate students and researchers in photonics, optoelectronics, nanoscience and nanotechnology, and optical and solid-state physics, who are working in this rapidly developing field.

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