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Improving The Spatial Angular And Temporal Resolution In Light Field Imaging
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Book Synopsis Improving the Spatial, Angular, and Temporal Resolution in Light Field Imaging by : Zhan Yu
Download or read book Improving the Spatial, Angular, and Temporal Resolution in Light Field Imaging written by Zhan Yu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, I develop a new class of image processing algorithms and camera designs that can significantly improve the spatial, angular, and temporal resolution in light field imaging.
Book Synopsis Light Field Imaging for Deflectometry by : Uhlig, David
Download or read book Light Field Imaging for Deflectometry written by Uhlig, David and published by KIT Scientific Publishing. This book was released on 2023-07-14 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical measurement methods are becoming increasingly important for high-precision production of components and quality assurance. The increasing demand can be met by modern imaging systems with advanced optics, such as light field cameras. This work explores their use in the deflectometric measurement of specular surfaces. It presents improvements in phase unwrapping and calibration techniques, enabling high surface reconstruction accuracies using only a single monocular light field camera.
Book Synopsis Computational Photography by : Saghi Hajisharif
Download or read book Computational Photography written by Saghi Hajisharif and published by Linköping University Electronic Press. This book was released on 2020-02-18 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and recent advancements of computational photography have revolutionized the imaging industry. Computational photography is a combination of imaging techniques at the intersection of various fields such as optics, computer vision, and computer graphics. These methods enhance the capabilities of traditional digital photography by applying computational techniques both during and after the capturing process. This thesis targets two major subjects in this field: High Dynamic Range (HDR) image reconstruction and Light Field (LF) compressive capturing, compression, and real-time rendering. The first part of the thesis focuses on the HDR images that concurrently contain detailed information from the very dark shadows to the brightest areas in the scenes. One of the main contributions presented in this thesis is the development of a unified reconstruction algorithm for spatially variant exposures in a single image. This method is based on a camera noise model, and it simultaneously resamples, reconstructs, denoises, and demosaics the image while extending its dynamic range. Furthermore, the HDR reconstruction algorithm is extended to adapt to the local features of the image, as well as the noise statistics, to preserve the high-frequency edges during reconstruction. In the second part of this thesis, the research focus shifts to the acquisition, encoding, reconstruction, and rendering of light field images and videos in a real-time setting. Unlike traditional integral photography, a light field captures the information of the dynamic environment from all angles, all points in space, and all spectral wavelength and time. This thesis employs sparse representation to provide an end-to-end solution to the problem of encoding, real-time reconstruction, and rendering of high dimensional light field video data sets. These solutions are applied on various types of data sets, such as light fields captured with multi-camera systems or hand-held cameras equipped with micro-lens arrays, and spherical light fields. Finally, sparse representation of light fields was utilized for developing a single sensor light field video camera equipped with a color-coded mask. A new compressive sensing model is presented that is suitable for dynamic scenes with temporal coherency and is capable of reconstructing high-resolution light field videos.
Book Synopsis Enhancing the Resolution of Imaging Systems by Spatial Spectrum Manipulation by :
Download or read book Enhancing the Resolution of Imaging Systems by Spatial Spectrum Manipulation written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Much research effort has been spent in the 21st century on superresolution imaging techniques, methods which can beat the diffraction limit. Subwavelength composite structures called ``metamaterials" had initially shown great promise in superresolution imaging applications in the early 2000s, owing to their potential for nearly arbitrary capabilities in controlling light. However, for optical frequencies they are often plagued by absorption and scattering losses which can decay or destroy their interesting properties. Similar issues limit the application of other superresolution devices operating as effective media, or metal films that can transfer waves with large momentum by supporting surface plasmon polaritons. In this dissertation, new methods of mitigating the loss of object information in lossy and noisy optical imaging systems are presented. The result is an improvement in the upper bound on lateral spatial resolution. A concentration is placed on metamaterial and plasmonic imaging systems, and the same methods are subsequently adapted to more conventional far-field imaging systems. First, through numerical simulation it is shown that a lossy metamaterial lens has degraded imaging performance which can be partially compensated by deconvolution post-processing of the resultant image. This post-processing procedure is then shown to emulate a physical process called plasmon injection, which has been previously implemented to effectively remove the losses in a plasmonic metamaterial. Next, a more realistic scenario is considered; a thin film of silver acting as a near-field plasmonic ``superlens." In this case, methods are implemented to model incoherent light propagation so that the image can be reconstructed using only intensity data, removing the need for phase measurement. The same procedure from above is followed, and the resolution is enhanced. To push the resolution further, a spatial filtering method called active convolved illumination is developed to overcome the resolution limit set by the noise floor of the system. Finally, the spatial filtering methods are applied to more a more conventional far-field imaging system. Supported by experiment, the lateral resolution of a low numerical aperture imaging system is improved by blocking photons at the Fourier plane. For coherent light, a diffractive superlens is designed which uses the same principles from the above theory, except it encodes the high spatial frequency waves into propagating waves via a diffraction grating. The result is lateral resolution performance that surpasses similar previously published devices by 10 nm at a wavelength more than 80 nm longer.
Book Synopsis Coded Optical Imaging by : Jinyang Liang
Download or read book Coded Optical Imaging written by Jinyang Liang and published by Springer Nature. This book was released on with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-Dimensional Television, Video, and Display Technologies by : Bahram Javidi
Download or read book Three-Dimensional Television, Video, and Display Technologies written by Bahram Javidi and published by Springer Science & Business Media. This book was released on 2002-08-15 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first monograph on this rapidly evolving area of research and development, this book presents both the theory and applications of new advances in 3D TV and display techniques. The theoretical concepts are illustrated by applied examples, numerical simulations and experimental results.
Download or read book Advances in Visual Semiotics written by and published by Walter de Gruyter. This book was released on 2011-12-07 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emerging Trends and Applications in Artificial Intelligence by : Fausto Pedro García Márquez
Download or read book Emerging Trends and Applications in Artificial Intelligence written by Fausto Pedro García Márquez and published by Springer Nature. This book was released on with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computer Vision – ECCV 2020 by : Andrea Vedaldi
Download or read book Computer Vision – ECCV 2020 written by Andrea Vedaldi and published by Springer. This book was released on 2020-10-07 with total page 803 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 30-volume set, comprising the LNCS books 12346 until 12375, constitutes the refereed proceedings of the 16th European Conference on Computer Vision, ECCV 2020, which was planned to be held in Glasgow, UK, during August 23-28, 2020. The conference was held virtually due to the COVID-19 pandemic. The 1360 revised papers presented in these proceedings were carefully reviewed and selected from a total of 5025 submissions. The papers deal with topics such as computer vision; machine learning; deep neural networks; reinforcement learning; object recognition; image classification; image processing; object detection; semantic segmentation; human pose estimation; 3d reconstruction; stereo vision; computational photography; neural networks; image coding; image reconstruction; object recognition; motion estimation.
Book Synopsis Fourier Ptychographic Imaging by : Guoan Zheng
Download or read book Fourier Ptychographic Imaging written by Guoan Zheng and published by Morgan & Claypool Publishers. This book was released on 2016-06-30 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates the concept of Fourier ptychography, a new imaging technique that bypasses the resolution limit of the employed optics. In particular, it transforms the general challenge of high-throughput, high-resolution imaging from one that is coupled to the physical limitations of the optics to one that is solvable through computation. Demonstrated in a tutorial form and providing many MATLAB® simulation examples for the reader, it also discusses the experimental implementation and recent developments of Fourier ptychography. This book will be of interest to researchers and engineers learning simulation techniques for Fourier optics and the Fourier ptychography concept.
Book Synopsis Three-Dimensional Imaging Techniques by : Takanori Okoshi
Download or read book Three-Dimensional Imaging Techniques written by Takanori Okoshi and published by . This book was released on 2011-03 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: A seminal early text on lenticular and holographic imaging, Takanori Okoshi's "Three-Dimensional Imaging Techniques" provides analysis and insights into the fundamentals of 3-D perception and the creation of 3-D imagery as well as a history of its technological development.
Book Synopsis Surface Plasmon Resonance in Bioanalysis by :
Download or read book Surface Plasmon Resonance in Bioanalysis written by and published by Elsevier. This book was released on 2021-11-11 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Plasmon Resonance in Bioanalysis, Volume 95 in the Comprehensive Analytical Chemistry series, contains a wide range of topics on the applications and new advances of surface plasmon resonance (SPR) in bioanalysis, including Surface plasmon resonance microscopy for single-cell based drug screening, Phase-Sensitive Surface Plasmon Resonance Sensors for Highly Sensitive Bioanalysis, SPR coupled to ambient mass spectrometry, Surface Plasmon Resonance Microscopy for activity detection and imaging of single cells, SPR for water pollutant detection and biofouling control, SPR imaging for cellular analysis and detection, Progress in detection of surface palsmon resonance for biorefinery technology, and more. Additional chapters cover Long-range surface plasmon resonance and its biological sensing applications and Critical issues in clinical and biomedical applications of Surface Plasmon Resonance sensing. Provides updates on the latest applications of SPR microscopy in cell analysis Covers the latest design in SPR sensing for highly sensitive bioanalysis Presents the critical issues in clinical and biomedical applications of SPR
Book Synopsis Photon-Counting Image Sensors by : Eric R. Fossum
Download or read book Photon-Counting Image Sensors written by Eric R. Fossum and published by MDPI. This book was released on 2018-07-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Photon-Counting Image Sensors" that was published in Sensors
Book Synopsis Artificial Intelligence and Robotics by : Huimin Lu
Download or read book Artificial Intelligence and Robotics written by Huimin Lu and published by Springer. This book was released on 2017-10-31 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights selected papers presented at the 2nd International Symposium on Artificial Intelligence and Robotics 2017 (ISAIR2017), held in Nakamura Centenary Memorial Hall, Kitakyushu, Japan on November 25–26, 2017. Today, the integration of artificial intelligence and robotic technologies has become a topic of growing interest for both researchers and developers from academic fields and industries worldwide, and artificial intelligence is poised to become the main approach pursued in next-generation robotics research. The rapidly growing number of artificial intelligence algorithms and big data solutions has significantly extended the number of potential applications for robotic technologies. However, it also poses new challenges for the artificial intelligence community. The aim of this symposium is to provide a platform for young researchers to share the latest scientific achievements in this field, which are discussed in these proceedings.
Book Synopsis Frontiers in Optics and Photonics by : Federico Capasso
Download or read book Frontiers in Optics and Photonics written by Federico Capasso and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-06-08 with total page 783 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a cutting-edge research overview on the latest developments in the field of Optics and Photonics. All chapters are authored by the pioneers in their field and will cover the developments in Quantum Photonics, Optical properties of 2D Materials, Optical Sensors, Organic Opto-electronics, Nanophotonics, Metamaterials, Plasmonics, Quantum Cascade lasers, LEDs, Biophotonics and biomedical photonics and spectroscopy.
Book Synopsis Visualizing Chemistry by : National Research Council
Download or read book Visualizing Chemistry written by National Research Council and published by National Academies Press. This book was released on 2006-06-01 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientists and engineers have long relied on the power of imaging techniques to help see objects invisible to the naked eye, and thus, to advance scientific knowledge. These experts are constantly pushing the limits of technology in pursuit of chemical imagingâ€"the ability to visualize molecular structures and chemical composition in time and space as actual events unfoldâ€"from the smallest dimension of a biological system to the widest expanse of a distant galaxy. Chemical imaging has a variety of applications for almost every facet of our daily lives, ranging from medical diagnosis and treatment to the study and design of material properties in new products. In addition to highlighting advances in chemical imaging that could have the greatest impact on critical problems in science and technology, Visualizing Chemistry reviews the current state of chemical imaging technology, identifies promising future developments and their applications, and suggests a research and educational agenda to enable breakthrough improvements.
Book Synopsis Zebrafish as a Model for Parkinson’s Disease by : Wael Mohamed
Download or read book Zebrafish as a Model for Parkinson’s Disease written by Wael Mohamed and published by CRC Press. This book was released on 2024-10-04 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increasing demand for innovative techniques arises from the lack of safe, effective, and patient-friendly therapies for neurodegenerative disorders. With this objective in mind, the chapters of the book are structured to offer a thorough insight into recent advancements in utilizing the zebrafish (ZF) as a model for studying Parkinson’s disease (PD). This book aims to present readers with a comprehensive understanding of the clinical application of the ZF model in treating PD, encompassing the latest developments, challenges, safety considerations, toxicity issues, regulatory aspects, future potential, and limitations. Individuals in academia, the scientific community, business, and education seeking a more effective approach to target the brain stand to benefit from this resource. Key Features Provides a comparative perspective of the zebrafish–Parkinson’s disease model Highlights the restrictions of available medicines Describes biochemical and histopathological characteristics, advantages, and disadvantages of this model Emphasizes distinct facets of histopathology Presents advances and developments of the future potential perspectives
