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Vision Models for High Dynamic Range and Wide Colour Gamut Imaging

Vision Models for High Dynamic Range and Wide Colour Gamut Imaging
Author: Marcelo Bertalmío
Publisher: Academic Press
Total Pages: 324
Release: 2019-11-06
Genre: Computers
ISBN: 0128138955

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To enhance the overall viewing experience (for cinema, TV, games, AR/VR) the media industry is continuously striving to improve image quality. Currently the emphasis is on High Dynamic Range (HDR) and Wide Colour Gamut (WCG) technologies, which yield images with greater contrast and more vivid colours. The uptake of these technologies, however, has been hampered by the significant challenge of understanding the science behind visual perception. Vision Models for High Dynamic Range and Wide Colour Gamut Imaging provides university researchers and graduate students in computer science, computer engineering, vision science, as well as industry R&D engineers, an insight into the science and methods for HDR and WCG. It presents the underlying principles and latest practical methods in a detailed and accessible way, highlighting how the use of vision models is a key element of all state-of-the-art methods for these emerging technologies. Presents the underlying vision science principles and models that are essential to the emerging technologies of HDR and WCG Explores state-of-the-art techniques for tone and gamut mapping Discusses open challenges and future directions of HDR and WCG research


Computer Vision

Computer Vision
Author: Md Atiqur Rahman Ahad
Publisher: CRC Press
Total Pages: 359
Release: 2024-07-30
Genre: Computers
ISBN: 104002937X

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Computer vision has made enormous progress in recent years, and its applications are multifaceted and growing quickly, while many challenges still remain. This book brings together a range of leading researchers to examine a wide variety of research directions, challenges, and prospects for computer vision and its applications. This book highlights various core challenges as well as solutions by leading researchers in the field. It covers such important topics as data-driven AI, biometrics, digital forensics, healthcare, robotics, entertainment and XR, autonomous driving, sports analytics, and neuromorphic computing, covering both academic and industry R&D perspectives. Providing a mix of breadth and depth, this book will have an impact across the fields of computer vision, imaging, and AI. Computer Vision: Challenges, Trends, and Opportunities covers timely and important aspects of computer vision and its applications, highlighting the challenges ahead and providing a range of perspectives from top researchers around the world. A substantial compilation of ideas and state-of-the-art solutions, it will be of great benefit to students, researchers, and industry practitioners.


High Dynamic Range Video

High Dynamic Range Video
Author: Frédéric Dufaux
Publisher: Academic Press
Total Pages: 631
Release: 2016-04-27
Genre: Computers
ISBN: 0128030399

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At the time of rapid technological progress and uptake of High Dynamic Range (HDR) video content in numerous sectors, this book provides an overview of the key supporting technologies, discusses the effectiveness of various techniques, reviews the initial standardization efforts and explores new research directions in all aspects involved in HDR video systems. Topics addressed include content acquisition and production, tone mapping and inverse tone mapping operators, coding, quality of experience, and display technologies. This book also explores a number of applications using HDR video technologies in the automotive industry, medical imaging, spacecraft imaging, driving simulation and watermarking. By covering general to advanced topics, along with a broad and deep analysis, this book is suitable for both the researcher new or familiar to the area. With this book the reader will: Gain a broad understanding of all the elements in the HDR video processing chain Learn the most recent results of ongoing research Understand the challenges and perspectives for HDR video technologies Covers a broad range of topics encompassing the whole processing chain in HDR video systems, from acquisition to display Provides a comprehensive overview of this fast emerging topic Presents upcoming applications taking advantages of HDR


Advances in Glass Research

Advances in Glass Research
Author: Shadia Jamil Ikhmayies
Publisher: Springer Nature
Total Pages: 411
Release: 2023-01-01
Genre: Technology & Engineering
ISBN: 303120266X

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This book covers preparation methods, characterization, and applications of most glass families. It reports the fundamentals of glass, challenges in the development, traditional and new manufacturing processes, characterization techniques, structural, thermal, and optical properties. The book reviews redox reactions in glasses and the factors affecting them, in addition to the techniques for determining the redox states and speciation of polyvalent ions in glass. A special chapter is dedicate to phosphate glasses, their importance, preparation methods, structure and properties. The use of different types of phosphate glasses in biomedicine, optics, electrochemistry, and as hosts for nuclear wastes is thoroughly discussed. Moreover, the applications of phosphate glasses in electronics and laser technology are also discussed in this book. Recent experimental studies such as the development of a novel bioglass system and the influence of ZnO, TiO2, and Al2O3 incorporation on structural, mechanical strength, degradation, pH variation, and formation of hydroxyapatite (Hap) layer on the glass surface are reported. Promising aluminum-silicate glassy system and its glass-ceramic counterpart are also presented in this books. An overview of the calorimetry approaches related to rare earth improvements on the thermal stability of glass is provided. The book discusses the advances in the chalcogenide glasses (ChGs) and based devices. It also reports their applications in optical devices, semiconductor circuits, and other applications. In addition, lanthanide and/or QDs doped luminescent glasses and their use in solid-state lighting and displays, security (anti-counterfeiting), optical temperature sensors, and solar energy (solar spectrum conversion) are reviewed along with a comparison of their advantages and disadvantages. Finally, the nature of phthalocyanines as materials for glass coatings and most widely used synthesis methods of porphyrins and phthalocyanines are discussed.


Colour Imaging

Colour Imaging
Author: Lindsay MacDonald
Publisher: John Wiley & Sons
Total Pages: 458
Release: 1999
Genre: Computers
ISBN:

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Colour Imaging Vision and Technology Edited by Lindsay W. MacDonald and M. Ronnier Luo University of Derby, UK With every new computer now equipped with CD-ROM and high quality colour display and sound capabilities, multimedia imaging has become part of mainstream computing. Pressure is on developers to produce applications that make use of these facilities. This book examines the key enabling technologies for such applications including digital colour imaging, spanning the capture, processing, encoding, transmission and reproduction of realistic colour images. * Extensive coverage of the multimedia materials and Web pages * Improving quality of presentation * Covers a wide range of areas including colour imaging and multimedia user interface * Colour illustrations Colour Imaging will appeal to a wide-ranging audience and is primarily aimed at colour engineers, colour researchers and developers. It is also a valuable reference guide for undergraduates, MSc level students in colour imaging, new media developers and manufacturers of imaging equipment. Visit Our Web Page! http://www.wiley.com/


Smart Multimedia

Smart Multimedia
Author: Anup Basu
Publisher: Springer
Total Pages: 458
Release: 2018-12-08
Genre: Computers
ISBN: 3030043754

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This book constitutes the proceedings of the First International Conference on Smart Multimedia, ICSM 2018, which was held in Toulon, France, in August 2018. The 39 papers presented were selected from about 100 submissions and are grouped in sections on social, affective and cognition analysis, person-centered smart multimedia: serving people with disabilities to the general population, haptic and robots for smart multimedia applications, MR, 3D, underwater image processing, smart signal processing meets smart sensing, visual behavior analysis: methods and applications, video analysis, learning, low-level vision, miscellaneous.


Color Gamut Mapping

Color Gamut Mapping
Author: Ján Morovič
Publisher: John Wiley & Sons
Total Pages: 304
Release: 2008-09-15
Genre: Technology & Engineering
ISBN: 0470758937

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Gamut mapping algorithms, implemented by color management systems, are an integral part of the color reproduction process. By adjusting the colors with appropriate algorithms, gamut mapping enables original colors to ‘fit’ inside differently shaped color gamuts and authentically transfers images across a range of media. This book illustrates the range of possible gamut mapping strategies for cross-media color reproduction, evaluates the performance of various options and advises on designing new, improved solutions. Starting with overviews of color science, reproduction and management, the text includes: a detailed survey of 90+ gamut mapping algorithms covering color-by-color reduction and expansion, spatial reduction, spectral reduction and gamut mapping for niche applications; a step-by-step example of a color’s journey from original to reproduction, via a digital workflow; a detailed analysis of color gamut computation, including a comparison of alternative techniques and an illustration of the gamuts of salient color sets and media; a presentation of both measurement-based and psychovisual evaluation of individual color reproductions; an overview of alternative approaches to gamut mapping proposed by the ISO and the CIE including an analysis of the building blocks of gamut mapping algorithms and the factors affecting their performance. Color Gamut Mapping is a comprehensive resource for practicing color and imaging engineers, scientists and researchers working in the development of imaging devices, software and solutions. It is also a valuable reference for students of color and imaging science, as well as photographers, graphic designers and artists.


The high dynamic range imaging pipeline

The high dynamic range imaging pipeline
Author: Gabriel Eilertsen
Publisher: Linköping University Electronic Press
Total Pages: 132
Release: 2018-05-15
Genre:
ISBN: 9176853020

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Techniques for high dynamic range (HDR) imaging make it possible to capture and store an increased range of luminances and colors as compared to what can be achieved with a conventional camera. This high amount of image information can be used in a wide range of applications, such as HDR displays, image-based lighting, tone-mapping, computer vision, and post-processing operations. HDR imaging has been an important concept in research and development for many years. Within the last couple of years it has also reached the consumer market, e.g. with TV displays that are capable of reproducing an increased dynamic range and peak luminance. This thesis presents a set of technical contributions within the field of HDR imaging. First, the area of HDR video tone-mapping is thoroughly reviewed, evaluated and developed upon. A subjective comparison experiment of existing methods is performed, followed by the development of novel techniques that overcome many of the problems evidenced by the evaluation. Second, a largescale objective comparison is presented, which evaluates existing techniques that are involved in HDR video distribution. From the results, a first open-source HDR video codec solution, Luma HDRv, is built using the best performing techniques. Third, a machine learning method is proposed for the purpose of reconstructing an HDR image from one single-exposure low dynamic range (LDR) image. The method is trained on a large set of HDR images, using recent advances in deep learning, and the results increase the quality and performance significantly as compared to existing algorithms. The areas for which contributions are presented can be closely inter-linked in the HDR imaging pipeline. Here, the thesis work helps in promoting efficient and high-quality HDR video distribution and display, as well as robust HDR image reconstruction from a single conventional LDR image.


High-Dynamic-Range (HDR) Vision

High-Dynamic-Range (HDR) Vision
Author: Bernd Hoefflinger
Publisher: Springer Series in Advanced Microelectronics
Total Pages: 268
Release: 2007-01-04
Genre: Computers
ISBN:

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Creating high-fidelity images of our world has been a continuous challenge, even as our understanding and skills have evolved. The acquisition and mapping of the rich and complex content of visual information rank high among the most demanding technical tasks. Now electronic image sensors can record a dynamic range from bright to dark of more than seven orders of magnitude, thus exceeding the ability of a human eye by more than a hundred times and displaying five orders of magnitude in brightness, resulting in CRT and LCD displays with more than 100-fold improvement. This first comprehensive account of high-dynamic-range (HDR) vision focusses on HDR real-time, high-speed digital video recording and also systematically presents HDR video transmission and display. The power of the eye-like, logarithmic optoelectronic conversion concept is demonstrated in machine-vision, medical, automotive, surveillance and cinematic applications, and it is extended to HDR sub-retinal implants for the vision impaired. While the book conveys the overall picture of HDR vision, specific knowledge of microelectronics and image processing is not required. It provides a quantitative summary of the major issues to allow the assessment of the state of the art and a glimpse at future developments. Selected experts share their know-how and expectations in this rapidly evolving art related to the single most powerful of our senses.