Recovering the Three-dimensional Motion and Structure of Multiple Moving Objects from Binocular Image Flows

Recovering the Three-dimensional Motion and Structure of Multiple Moving Objects from Binocular Image Flows
Author: Wendong Wang
Publisher:
Total Pages: 26
Release: 1993
Genre: Mobile robots
ISBN:

Abstract: "A new method is presented for recovering the three- dimensional motion and structure of multiple, independently-moving, rigid objects through the analysis of binocular image flow fields. The input to the algorithm is the image location and image velocity of a sparse set of feature points in the stereo image pair. The algorithm analyzes one rigid object at a time by simultaneously segmenting the associated feature points from the input data set, establishing the stereo correspondence of these feature points and determining the three-dimensional motion of the object. The solution method is iterative and is based on the stereo-motion algorithm presented in [8] for the analysis of scenes with only one set of three-dimensional motion components. No restrictions on the three- dimensional structure of the scene are required by the theory. Experimental results with numerically generated and laboratory image sequences are given to verify the method."

3-D Shape Estimation and Image Restoration

3-D Shape Estimation and Image Restoration
Author: Paolo Favaro
Publisher: Springer Science & Business Media
Total Pages: 262
Release: 2007-03-12
Genre: Computers
ISBN: 1846286883

In the areas of image processing and computer vision, there is a particular need for software that can, given an unfocused or motion-blurred image, infer the three-dimensional shape of a scene. This book describes the analytical processes that go into designing such software, delineates the options open to programmers, and presents original algorithms. Written for readers with interests in image processing and computer vision and with backgrounds in engineering, science or mathematics, this highly practical text/reference is accessible to advanced students or those with a degree that includes basic linear algebra and calculus courses.

3D Structure from Images - SMILE 2000

3D Structure from Images - SMILE 2000
Author: Marc Pollefeys
Publisher: Springer
Total Pages: 252
Release: 2003-06-29
Genre: Computers
ISBN: 3540452966

This volume contains the ?nal version of the papers originally presented at the second SMILE workshop 3D Structure from Multiple Images of Large-scale Environments, which was held on 1-2 July 2000 in conjunction with the Sixth European Conference in Computer Vision at Trinity College Dublin. The subject of the workshop was the visual acquisition of models of the 3D world from images and their application to virtual and augmented reality. Over the last few years tremendous progress has been made in this area. On the one hand important new insightshavebeenobtainedresultinginmore exibilityandnewrepresentations.Onthe other hand a number of techniques have come to maturity, yielding robust algorithms delivering good results on real image data. Moreover supporting technologies – such as digital cameras, computers, disk storage, and visualization devices – have made things possible that were infeasible just a few years ago. Opening the workshop was Paul Debevec s invited presentation on image-based modeling,rendering,andlighting.Hepresentedanumberoftechniquesforusingdigital images of real scenes to create 3D models, virtual camera moves, and realistic computer animations.Theremainderoftheworkshopwasdividedintothreesessions:Computation and Algorithms, Visual Scene Representations, and Extended Environments. After each session there was a panel discussion that included all speakers. These panel discussions were organized by Bill Triggs, Marc Pollefeys, and Tomas Pajdla respectively, who introduced the topics and moderated the discussion. Asubstantialpartoftheseproceedingsarethetranscriptsofthediscussionsfollowing each paper and the full panel sessions. These discussions were of very high quality and were an integral part of the workshop.

Guide to Three Dimensional Structure and Motion Factorization

Guide to Three Dimensional Structure and Motion Factorization
Author: Guanghui Wang
Publisher: Springer Science & Business Media
Total Pages: 219
Release: 2010-10-20
Genre: Computers
ISBN: 0857290460

The problem of structure and motion recovery from image sequences is an important theme in computer vision. Considerable progress has been made in this field during the past two decades, resulting in successful applications in robot navigation, augmented reality, industrial inspection, medical image analysis, and digital entertainment, among other areas. However, many of these methods work only for rigid objects and static scenes. The study of non-rigid structure from motion is not only of academic significance, but also has important practical applications in real-world, nonrigid or dynamic scenarios, such as human facial expressions and moving vehicles. This practical guide/reference provides a comprehensive overview of Euclidean structure and motion recovery, with a specific focus on factorization-based algorithms. The book discusses the latest research in this field, including the extension of the factorization algorithm to recover the structure of non-rigid objects, and presents some new algorithms developed by the authors. Readers require no significant knowledge of computer vision, although some background on projective geometry and matrix computation would be beneficial. Topics and features: presents the first systematic study of structure and motion recovery of both rigid and non-rigid objects from images sequences; discusses in depth the theory, techniques, and applications of rigid and non-rigid factorization methods in three dimensional computer vision; examines numerous factorization algorithms, covering affine, perspective and quasi-perspective projection models; provides appendices describing the mathematical principles behind projective geometry, matrix decomposition, least squares, and nonlinear estimation techniques; includes chapter-ending review questions, and a glossary of terms used in the book. This unique text offers practical guidance in real applications and implementations of 3D modeling systems for practitioners in computer vision and pattern recognition, as well as serving as an invaluable source of new algorithms and methodologies for structure and motion recovery for graduate students and researchers.

Minimum Points and Views for the Recovery of Three-Dimensional Structure

Minimum Points and Views for the Recovery of Three-Dimensional Structure
Author: Myron L. Braunstein
Publisher:
Total Pages: 43
Release: 1986
Genre:
ISBN:

Mathematical analyses of motion perception have established minimum combinations of points and distinct views that are sufficient to recover three-dimensional (3D) structure from two-dimensional (2D) images, using such regularities as rigid motion, fixed axis of rotation, and constant angular velocity. To determine whether human subjects could recover 3D information at these theoretical levels, we presented subjects with pairs of displays and asked them to determine whether they represented the same or different 3D structures. Number of points was varied between 2 and 5; number of views was varied between 2 and 6; and the motion was either fixed axis with constant angular velocity, fixed axis with variable velocity, or variable axis with variable velocity. Accuracy increased with views, but decreased with points, apparently due to the increased difficulty of the comparison task as the structure became more complex. Subjects' performance exceeded theoretical expectations, implying that they exploited regularities in addition to those in the theoretical analyses. Some possible additional regularities, and possible grouping effects, are discussed. (Author).

Stevens' Handbook of Experimental Psychology, Sensation and Perception

Stevens' Handbook of Experimental Psychology, Sensation and Perception
Author: Steven Yantis
Publisher: John Wiley and Sons
Total Pages: 830
Release: 2004-02-05
Genre: Psychology
ISBN: 9780471650140

Now available in paperback. This revised and updated edition of the definitive resource for experimental psychology offers comprehensive coverage of the latest findings in the field, as well as the most recent contributions in methodology and the explosion of research in neuroscience. Volume One: Sensation and Perception focuses on sensory experience and complex learned perceptions through modalities such as vision, touch, smell, and hearing.