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检索条件"丛书名=Synthesis Lectures on Computer Graphics and Animation"

共 50 条记录，以下是31-40 订阅

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Digital Heritage Reconstruction Using Super-resolution and Inpainting 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Milind G. Padalkar Manjunath V. Joshi Nilay L. Khatri

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Rethinking Quaternions 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Ron Goldman

ISBN: (数字)9783031795497

ISBN: (纸本)9783031795480

Quaternion multiplication can be used to rotate vectors in three-dimensions. Therefore, in computer graphics, quaternions have three principal applications: to increase speed and reduce storage for calculations involving rotations, to avoid distortions arising from numerical inaccuracies caused by floating point computations with rotations, and to interpolate between two rotations for key frame animation. Yet while the formal algebra of quaternions is well-known in the graphics community, the derivations of the formulas for this algebra and the geometric principles underlying this algebra are not well understood. The goals of this monograph are to provide a fresh, geometric interpretation for quaternions, appropriate for contemporary computer graphics, based on mass-points; to present better ways to visualize quaternions, and the effect of quaternion multiplication on points and vectors in three dimensions using insights from the algebra and geometry of multiplication in the complex plane; to derive the formula for quaternion multiplication from first principles; to develop simple, intuitive proofs of the sandwiching formulas for rotation and reflection; to show how to apply sandwiching to compute perspective projections. In addition to these theoretical issues, we also address some computational questions. We develop straightforward formulas for converting back and forth between quaternion and matrix representations for rotations, reflections, and perspective projections, and we discuss the relative advantages and disadvantages of the quaternion and matrix representations for these transformations. Moreover, we show how to avoid distortions due to floating point computations with rotations by using unit quaternions to represent rotations. We also derive the formula for spherical linear interpolation, and we explain how to apply this formula to interpolatebetween two rotations for key frame animation. Finally, we explain the role of quaternions in low-dim

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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Virtual Crowds: Methods, Simulation, and Control 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Nuria Pelechano Jan M. Allbeck Norman I. Badler

ISBN: (数字)9783031792427

ISBN: (纸本)9783031792410

There are many applications of computer animation and simulation where it is necessary to model virtual crowds of autonomous agents. Some of these applications include site planning, education, entertainment, training, and human factors analysis for building evacuation. Other applications include simulations of scenarios where masses of people gather, flow, and disperse, such as transportation centers, sporting events, and concerts. Most crowd simulations include only basic locomotive behaviors possibly coupled with a few stochastic actions. Our goal in this survey is to establish a baseline of techniques and requirements for simulating large-scale virtual human populations. Sometimes, these populations might be mutually engaged in a common activity such as evacuation from a building or area; other times they may be going about their individual and personal agenda of work, play, leisure, travel, or spectator. Computational methods to model one set of requirements may not mesh well withgood approaches to another. By including both crowd and individual goals and constraints into a comprehensive computational model, we expect to simulate the visual texture and contextual behaviors of groups of seemingly sentient beings. Table of Contents: Introduction / Crowd Simulation Methodology Survey / Individual Differences in Crowds / Framework (HiDAC + MACES + CAROSA) / HiDAC: Local Motion / MACES: Wayfinding with Communication and Roles / CAROSA: Functional Crowds / Initializing a Scenario / Evaluating Crowds

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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Information Theory Tools for Image Processing 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Miquel Feixas Anton Bardera Jaume Rigan Mateu Sbert Qing Xu

ISBN: (数字)9783031795558

ISBN: (纸本)9783031795541

Information Theory (IT) tools, widely used in many scientific fields such as engineering, physics, genetics, neuroscience, and many others, are also useful transversal tools in image processing. In this book, we present the basic concepts of IT and how they have been used in the image processing areas of registration, segmentation, video processing, and computational aesthetics. Some of the approaches presented, such as the application of mutual information to registration, are the state of the art in the field. All techniques presented in this book have been previously published in peer-reviewed conference proceedings or international journals. We have stressed here their common aspects, and presented them in an unified way, so to make clear to the reader which problems IT tools can help to solve, which specific tools to use, and how to apply them. The IT basics are presented so as to be self-contained in the book. The intended audiences are students and practitioners of image processing and related areas such as computer graphics and visualization. In addition, students and practitioners of IT will be interested in knowing about these applications. Table of Contents: Preface / Acknowledgments / Information Theory Basics / Image Registration / Image Segmentation / Video Key Frame Selection / Informational Aesthetics Measures / Bibliography / Authors' Biographies

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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High Dynamic Range Video 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

ISBN: (数字)9783031795282

ISBN: (纸本)9783031795275

As new displays and cameras offer enhanced color capabilities, there is a need to extend the precision of digital content. High Dynamic Range (HDR) imaging encodes images and video with higher than normal 8 bit-per-color-channel precision, enabling representation of the complete color gamut and the full visible range of ***, to realize transition from the traditional toHDRimaging, it is necessary to develop imaging algorithms that work with the high-precision data. Tomake such algorithms effective and feasible in practice, it is necessary to take advantage of the limitations of the human visual system by aligning the data shortcomings to those of the human eye, thus limiting storage and processing precision. Therefore, human visual perception is the key component of the solutions we discuss in this book. This book presents a complete pipeline forHDR image and video processing fromacquisition, through compression and quality evaluation, to display. At the HDR image and video acquisition stage specialized HDR sensors or multi-exposure techniques suitable for traditional cameras are discussed. Then, we present a practical solution for pixel values calibration in terms of photometric or radiometric quantities, which are required in some technically oriented applications. Also, we cover the problem of efficient image and video compression and encoding either for storage or transmission purposes, including the aspect of backward compatibility with existing formats. Finally, we review existing HDR display technologies and the associated problems of image contrast and brightness adjustment. For this purpose tone mapping is employed to accommodate HDR content to LDR devices. Conversely, the so-called inverse tone mapping is required to upgrade LDR content for displaying on HDR devices. We overview HDR-enabled image and video quality metrics, which are needed toverify algorithms at all stages of the pipeline. Additionally, we cover successful examples of the HD

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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Geometric and Discrete Path Planning for Interactive Virtual Worlds 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Marcelo Kallmann Mubbasir Kapadia

ISBN: (数字)9783031025884

ISBN: (纸本)9783031014604

Path planning and navigation are indispensable components for controlling autonomous agents in interactive virtual worlds. Given the growing demands on the size and complexity of modern virtual worlds, a number of new techniques have been developed for achieving intelligent navigation for the next generation of interactive multi-agent simulations. This book reviews the evolution of several related techniques, starting from classical planning and computational geometry techniques and then gradually moving toward more advanced topics with focus on recent developments from the work of the authors. The covered topics range from discrete search and geometric representations to planning under different types of constraints and harnessing the power of graphics hardware in order to address Euclidean shortest paths and discrete search for multiple agents under limited time budgets. The use of planning algorithms beyond path planning is also discussed in the areas of crowd animation and whole-body motion planning for virtual characters.

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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Design, Representations, and Processing for Additive Manufacturing 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Marco Attene Marco Livesu Sylvain Lefebvre Jonàs Martínez Thomas Funkhouser Szymon Rusinkiewicz Amit Haim Bermano Stefano Ellero

ISBN: (数字)9783031025969

ISBN: (纸本)9783031014680

The wide diffusion of 3D printing technologies continuously calls for effective solutions for designing and fabricating objects of increasing complexity. The so called "computational fabrication" pipeline comprises all the steps necessary to turn a design idea into a physical object, and this book describes the most recent advancements in the two fundamental phases along this pipeline: design and process planning. We examine recent systems in the computer graphics community that allow us to take a design idea from conception to a digital model, and classify algorithms that are necessary to turn such a digital model into an appropriate sequence of machining instructions.

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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GPU-Based Techniques for Global Illumination Effects 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： László Szirmay-Kalos László Szécsi Mateu Sbert

ISBN: (数字)9783031795251

ISBN: (纸本)9783031795244

This book presents techniques to render photo-realistic images by programming the graphics Processing Unit (GPU). We discuss effects such as mirror reflections, refractions, caustics, diffuse or glossy indirect illumination, radiosity, single or multiple scattering in participating media, tone reproduction, glow, and depth of field. The book targets game developers, graphics programmers, and also students with some basic understanding of computer graphics algorithms, rendering APIs like Direct3D or OpenGL, and shader programming. In order to make the book self-contained, the most important concepts of local illumination and global illumination rendering, graphics hardware, and Direct3D/HLSL programming are reviewed in the first chapters. After these introductory chapters we warm up with simple methods including shadow and environment mapping, then we move on toward advanced concepts aiming at global illumination rendering. Since it would have been impossible to give a rigorous review of all approaches proposed in this field, we go into the details of just a few methods solving each particular global illumination effect. However, a short discussion of the state of the art and links to the bibliography are also provided to refer the interested reader to techniques that are not detailed in this book. The implementation of the selected methods is also presented in HLSL, and we discuss their observed performance, merits, and disadvantages. In the last chapter, we also review how these techniques can be integrated in an advanced game engine and present case studies of their exploitation in games. Having gone through this book, the reader will have an overview of the state of the art, will be able to apply and improve these techniques, and most importantly, will be capable of developing brand new GPU algorithms. Table of Contents: Global Illumintation Rendering / Local Illumination Rendering Pipeline of GPUs / Programming and Controlling GPUs / Simple Improvements of the L

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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Mathematical Basics of Motion and Deformation in computer graphics, Second Edition 2

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Ken Anjyo Hiroyuki Ochiai

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Heterogeneous Spatial Data 1

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丛书名： synthesis lectures on Visual Computing: computer graphics, animation, Computational Photography and Imaging

1000年

作者： Giuseppe Patanè Michela Spagnuolo

ISBN: (数字)9783031025891

ISBN: (纸本)9783031014611

New data acquisition techniques are emerging and are providing fast and efficient means for multidimensional spatial data collection. Airborne LIDAR surveys, SAR satellites, stereo-photogrammetry and mobile mapping systems are increasingly used for the digital reconstruction of the environment. All these systems provide extremely high volumes of raw data, often enriched with other sensor data (e.g., beam intensity). Improving methods to process and visually analyze this massive amount of geospatial and user-generated data is crucial to increase the efficiency of organizations and to better manage societal challenges. Within this context, this book proposes an up-to-date view of computational methods and tools for spatio-temporal data fusion, multivariate surface generation, and feature extraction, along with their main applications for surface approximation and rainfall analysis. The book is intended to attract interest from different fields, such as computer vision, computer graphics,geomatics, and remote sensing, working on the common goal of processing 3D data. To this end, it presents and compares methods that process and analyze the massive amount of geospatial data in order to support better management of societal challenges through more timely and better decision making, independent of a specific data modeling paradigm (e.g., 2D vector data, regular grids or 3D point clouds). We also show how current research is developing from the traditional layered approach, adopted by most GIS softwares, to intelligent methods for integrating existing data sets that might contain important information on a geographical area and environmental phenomenon. These services combine traditional map-oriented visualization with fully 3D visual decision support methods and exploit semantics-oriented information (e.g., a-priori knowledge, annotations, segmentations) when processing, merging, and integrating big pre-existing data sets.

关键词： Mathematics, general computer Imaging, Vision, Pattern Recognition and graphics

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