3d Object Processing
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3d Object Processing
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Author : Jean-Luc Dugelay
language : en
Publisher: John Wiley & Sons
Release Date : 2008-07-31
3d Object Processing written by Jean-Luc Dugelay and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-07-31 with Science categories.
The arrival, and continuing evolution, of high quality 3D objects has been made possible by recent progress in 3D scanner acquisition and 3D graphics rendering. With this increasing quality comes a corresponding increase in the size and complexity of the data files and the necessity for advances in compression techniques. Effective indexing to facilitate the retrieval of the 3D data is then required to efficiently store, search and recapture the objects that have been compressed. The application of 3D images in fields such as communications, medicine and the military also calls for copyright protection, or watermarking, to secure the data for transmission. Written by expert contributors, this timely text brings together the three important and complementary topics of compression, retrieval and watermarking techniques for 3D objects. 3D object processing applications are developing rapidly and this book tackles the challenges and opportunities presented, focusing on the secure transmission, sharing and searching of 3D objects on networks, and includes: an introduction to the commonly used 3D representation schemes; the characteristics, advantages and limitations of polygonal meshes, surface based models and volumetric models; 3D compression techniques; the 3D coding and decoding schemes for reducing the size of 3D data to reduce transmission time and minimize distortion; state of the art responses to the intrinsic challenges of building a 3D-model search engine, considering view-based, structural and full-3D approaches; watermarking techniques for ensuring intellectual property protection and content security without altering the visual quality of the 3D object. 3D Object Processing: Compression, Indexing and Watermarking is an invaluable resource for graduate students and researchers working in signal and image processing, computer aided design, animation and imaging systems. Practising engineers who want to expand their knowledge of 3D video objects, including data compression, indexing, security, and copyrighting of information, will also find this book of great use.
Topological Approaches For 3d Object Processing And Applications
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Author : Khaled Tarmissi
language : en
Publisher:
Release Date : 2010
Topological Approaches For 3d Object Processing And Applications written by Khaled Tarmissi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
The great challenge in 3D object processing is to devise computationally efficient algorithms for recovering 3D models contaminated by noise and preserving their geometrical structure. The first problem addressed in this thesis is object denoising formulated in the discrete variational framework. We introduce a 3D mesh denoising method based on kernel density estimation. The proposed approach is able to reduce the over-smoothing effect and effectively remove undesirable noise while preserving prominent geometric features of a 3D mesh such as sharp features and fine details. The feasibility of the approach is demonstrated through extensive experiments. The rest of the thesis is devoted to a joint exploitation of geometry and topology of 3D objects for as parsimonious as possible representation of models and its subsequent application in object modeling, compression, and hashing problems. We introduce a 3D mesh compression technique using the centroidal mesh neighborhood information. The key idea is to apply eigen-decomposition to the mesh umbrella matrix, and then discard the smallest eigenvalues/eigenvectors in order to reduce the dimensionality of the new spectral basis so that most of the energy is concentrated in the low frequency coefficients. We also present a hashing technique for 3D models using spectral graph theory and entropic spanning trees by partitioning a 3D triangle mesh into an ensemble of submeshes, and then applying eigen-decomposition to the Laplace-Beltrami matrix of each sub-mesh, followed by computing the hash value of each sub-mesh. Moreover, we introduce several statistical distributions to analyze the topological properties of 3D objects. These probabilistic distributions provide useful information about the way 3D mesh models are connected. Illustrating experiments with synthetic and real data are provided to demonstrate the feasibility and the much improved performance of the proposed approaches in 3D object compression, hashing, and modeling.
Three Dimensional Model Analysis And Processing
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Author : Faxin Yu
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-03
Three Dimensional Model Analysis And Processing written by Faxin Yu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02-03 with Computers categories.
With the increasing popularization of the Internet, together with the rapid development of 3D scanning technologies and modeling tools, 3D model databases have become more and more common in fields such as biology, chemistry, archaeology and geography. People can distribute their own 3D works over the Internet, search and download 3D model data, and also carry out electronic trade over the Internet. However, some serious issues are related to this as follows: (1) How to efficiently transmit and store huge 3D model data with limited bandwidth and storage capacity; (2) How to prevent 3D works from being pirated and tampered with; (3) How to search for the desired 3D models in huge multimedia databases. This book is devoted to partially solving the above issues. Compression is useful because it helps reduce the consumption of expensive resources, such as hard disk space and transmission bandwidth. On the downside, compressed data must be decompressed to be used, and this extra processing may be detrimental to some applications. 3D polygonal mesh (with geometry, color, normal vector and texture coordinate information), as a common surface representation, is now heavily used in various multimedia applications such as computer games, animations and simulation applications. To maintain a convincing level of realism, many applications require highly detailed mesh models. However, such complex models demand broad network bandwidth and much storage capacity to transmit and store. To address these problems, 3D mesh compression is essential for reducing the size of 3D model representation.
3d Online Multimedia Games
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Author : Irene Cheng
language : en
Publisher: World Scientific
Release Date : 2008
3d Online Multimedia Games written by Irene Cheng and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Computers categories.
The topics discussed in this book broadly cover four categories: networking issues in online multimedia; joint texture-mesh simplification and view independent transmission; view dependent transmission and server-side rendering; content and background creation; and creating simple online games.
Making Things See
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Author : Greg Borenstein
language : en
Publisher: Maker Media, Inc.
Release Date : 2012-01-13
Making Things See written by Greg Borenstein and has been published by Maker Media, Inc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-13 with Computers categories.
This detailed, hands-on guide provides the technical and conceptual information you need to build cool applications with Microsoft’s Kinect, the amazing motion-sensing device that enables computers to see. Through half a dozen meaty projects, you’ll learn how to create gestural interfaces for software, use motion capture for easy 3D character animation, 3D scanning for custom fabrication, and many other applications. Perfect for hobbyists, makers, artists, and gamers, Making Things See shows you how to build every project with inexpensive off-the-shelf components, including the open source Processing programming language and the Arduino microcontroller. You’ll learn basic skills that will enable you to pursue your own creative applications with Kinect. Create Kinect applications on Mac OS X, Windows, or Linux Track people with pose detection and skeletonization, and use blob tracking to detect objects Analyze and manipulate point clouds Make models for design and fabrication, using 3D scanning technology Use MakerBot, RepRap, or Shapeways to print 3D objects Delve into motion tracking for animation and games Build a simple robot arm that can imitate your arm movements Discover how skilled artists have used Kinect to build fascinating projects
Fundamentals Of Three Dimensional Digital Image Processing
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Author : Junichiro Toriwaki
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-05-04
Fundamentals Of Three Dimensional Digital Image Processing written by Junichiro Toriwaki and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-05-04 with Computers categories.
This book is a detailed description of the basics of three-dimensional digital image processing. A 3D digital image (abbreviated as “3D image” below) is a digitalized representation of a 3D object or an entire 3D space, stored in a computer as a 3D array. Whereas normal digital image processing is concerned with screens that are a collection of square shapes called “pixels” and their corresponding density levels, the “image plane” in three dimensions is represented by a division into cubical graphical elements (called “voxels”) that represent corresponding density levels. Inthecontextofimageprocessing,in manycases3Dimageprocessingwill refer to the input of multiple 2D images and performing processing in order to understand the 3D space (or “scene”) that they depict. This is a result of research into how to use input from image sensors such as television cameras as a basis for learning about a 3D scene, thereby replicating the sense of vision for humans or intelligent robots, and this has been the central problem in image processing research since the 1970s. However, a completely di?erent type of image with its own new problems, the 3D digital image discussed in this book, rapidly took prominence in the 1980s, particularly in the ?eld of medical imaging. These were recordings of human bodies obtained through computed (or “computerized”) tomography (CT),imagesthatrecordednotonlytheexternal,visiblesurfaceofthesubject but also, to some degree of resolution, its internal structure. This was a type of image that no one had experienced before.
Temporal Data Processing For 3d Object Detection In Autonomous Driving
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Author : Emeç Erçelik
language : en
Publisher:
Release Date : 2022
Temporal Data Processing For 3d Object Detection In Autonomous Driving written by Emeç Erçelik and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Reconstruction And Analysis Of 3d Scenes
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Author : Martin Weinmann
language : en
Publisher: Springer
Release Date : 2016-03-17
Reconstruction And Analysis Of 3d Scenes written by Martin Weinmann and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-03-17 with Computers categories.
This unique work presents a detailed review of the processing and analysis of 3D point clouds. A fully automated framework is introduced, incorporating each aspect of a typical end-to-end processing workflow, from raw 3D point cloud data to semantic objects in the scene. For each of these components, the book describes the theoretical background, and compares the performance of the proposed approaches to that of current state-of-the-art techniques. Topics and features: reviews techniques for the acquisition of 3D point cloud data and for point quality assessment; explains the fundamental concepts for extracting features from 2D imagery and 3D point cloud data; proposes an original approach to keypoint-based point cloud registration; discusses the enrichment of 3D point clouds by additional information acquired with a thermal camera, and describes a new method for thermal 3D mapping; presents a novel framework for 3D scene analysis.
3d Point Cloud Processing Using Spin Images For Object Detection
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Author : Jason Marco K. Ligon
language : en
Publisher:
Release Date : 2017
3d Point Cloud Processing Using Spin Images For Object Detection written by Jason Marco K. Ligon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
A 3d Object Reconstruction System Integrating Range Image Processing And Rapid Prototyping
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Author : Carnegie Mellon University. Robotics Institute
language : en
Publisher:
Release Date : 1990
A 3d Object Reconstruction System Integrating Range Image Processing And Rapid Prototyping written by Carnegie Mellon University. Robotics Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Computer vision categories.
Finally, this prototype is used as a pattern in a thermal spray process to build a metal-faced die replica of the original object. The system is demonstrated by scanning a human face which is then replicated as a stainless-steel sculpture."