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Articulated Object Reconstruction From Interaction Videos
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Book Synopsis Articulated Object Reconstruction from Interaction Videos by : Xiang Xu
Download or read book Articulated Object Reconstruction from Interaction Videos written by Xiang Xu and published by . This book was released on 2021 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the problem of articulated object reconstruction from an input video. Our focus is on estimating the shape, pose, and part motion of an articulated object during human-object manipulation. The task is challenging as the object is dynamically changing and 3D reconstruction from 2D is inherently ambiguous. To enable research in this direction, we first create D3D-HOI: a dataset of monocular videos with ground truth annotations of 3D object shape, pose and part motion from human-object interaction videos. Our dataset consists of several common categories of articulated objects in diverse real-world scenes, observed from a variety of fixed camera view points. Each manipulated object (e.g., microwave) is represented using a 3D parametric model that best fits the captured data. We then annotate the size, pose, and part articulation values at every frame. A novel optimization-based method is proposed based on differentiable renderer and human-object interaction terms, which leverage the human pose for better inferring of the object spatial layout and dynamics. We evaluate this new approach on our dataset, demonstrating that human-object relations can significantly reduce the pose and motion errors on real-world articulated objects. Code and dataset are available at the following link (https://github.com/facebookresearch/d3d-hoi).
Book Synopsis Articulated 3D Human-object Interactions from RGB Videos by : Sanjay Haresh
Download or read book Articulated 3D Human-object Interactions from RGB Videos written by Sanjay Haresh and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human-object interactions with articulated objects are common in everyday life. Despite much progress in single-view 3D reconstruction, it is still challenging to infer an articulated 3D object model from an RGB video showing a person manipulating the object. We canonicalize the task of articulated 3D human-object interaction reconstruction from RGB video, and carry out a systematic benchmark of five families of methods for this task: 3D plane estimation, 3D cuboid estimation, CAD model fitting, implicit field fitting, and free-form mesh fitting. Our experiments show that all methods struggle to obtain high accuracy results even when provided ground truth information about the observed objects. At the same time, we also found that highly constrained object shape representations (e.g. CAD models) work much better than unconstrained representations (e.g. free-form meshes). We also identify key factors which make the task challenging and suggest directions for future work on this challenging 3D computer vision task.
Book Synopsis Articulated Object Reconstruction and Motion Capture from Depth Video by : Yuri Pekelny
Download or read book Articulated Object Reconstruction and Motion Capture from Depth Video written by Yuri Pekelny and published by . This book was released on 2008 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Articulated Motion and Deformable Objects by : Francisco J. Perales
Download or read book Articulated Motion and Deformable Objects written by Francisco J. Perales and published by Springer. This book was released on 2003-08-02 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Workshop on Articulated Motion and Deformable Objects, AMDO 2002, held in Palma de Mallorca, Spain in November 2002.The 21 revised full papers presented were carefully reviewed and selected for inclusion in the book. Among the topics addressed are geometric and physical deformable objects, motion analysis, articulated models and animation, visualization of deformable models, 3D recovery from motion, single or multiple human motion analysis and synthesis, applications of deformable models and motion analysis, face tracking, recovery and recognition models.
Book Synopsis Articulated Motion and Deformable Objects by : Francisco Jose Perales Lopez
Download or read book Articulated Motion and Deformable Objects written by Francisco Jose Perales Lopez and published by Springer. This book was released on 2012-06-26 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 7th International Conference on Articulated Motion and Deformable Objects, AMDO 2012, held in Port d'Andratx, Mallorca, Spain, in July 2012. The 27 papers presented were carefully reviewed and selected from 44 submissions. The volume also contains one full paper length invited talk. The conference dealt with the following topics: advanced computer graphics (human modeling and animation); human motion (analysis, tracking, 3D reconstruction and recognition); multimodal user interaction and applications; and affective interfaces (recognition and interpretation of emotions, ECAs -- embodied conversational agents in HCI).
Author :Francisco José Perales Publisher :Springer Science & Business Media ISBN 13 :3642140602 Total Pages :323 pages Book Rating :4.6/5 (421 download)
Book Synopsis Articulated Motion and Deformable Objects by : Francisco José Perales
Download or read book Articulated Motion and Deformable Objects written by Francisco José Perales and published by Springer Science & Business Media. This book was released on 2010-06-30 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 6th International Conference on Articulated Motion and Deformable Objects, held in Port d'Andratx, Mallorca, Spain, in July 2010.
Book Synopsis Deformable and Articulated 3D Reconstruction from Monocular Video Sequences by : Marco Paladini
Download or read book Deformable and Articulated 3D Reconstruction from Monocular Video Sequences written by Marco Paladini and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the problem of deformable and articulated structure from motion from monocular uncalibrated video sequences. Structure from motion is defined as the problem of recovering information about the 3D structure of scenes imaged by a camera in a video sequence. Our study aims at the challenging problem of non-rigid shapes (e.g. a beating heart or a smiling face). Non-rigid structures appear constantly in our everyday life, think of a bicep curling, a torso twisting or a smiling face. Our research seeks a general method to perform 3D shape recovery purely from data, without having to rely on a pre-computed model or training data. Open problems in the field are the difficulty of the non-linear estimation, the lack of a real-time system, large amounts of missing data in real-world video sequences, measurement noise and strong deformations. Solving these problems would take us far beyond the current state of the art in non-rigid structure from motion. This dissertation presents our contributions in the field of non-rigid structure from motion, detailing a novel algorithm that enforces the exact metric structure of the problem at each step of the minimisation by projecting the motion matrices onto the correct deformable or articulated metric motion manifolds respectively. An important advantage of this new algorithm is its ability to handle missing data which becomes crucial when dealing with real video sequences. We present a generic bilinear estimation framework, which improves convergence and makes use of the manifold constraints. Finally, we demonstrate a sequential, frame-by-frame estimation algorithm, which provides a 3D model and camera parameters for each video frame, while simultaneously building a model of object deformations.
Book Synopsis Human Recognition at a Distance in Video by : Bir Bhanu
Download or read book Human Recognition at a Distance in Video written by Bir Bhanu and published by Springer Science & Business Media. This book was released on 2010-11-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most biometric systems employed for human recognition require physical contact with, or close proximity to, a cooperative subject. Far more challenging is the ability to reliably recognize individuals at a distance, when viewed from an arbitrary angle under real-world environmental conditions. Gait and face data are the two biometrics that can be most easily captured from a distance using a video camera. This comprehensive and logically organized text/reference addresses the fundamental problems associated with gait and face-based human recognition, from color and infrared video data that are acquired from a distance. It examines both model-free and model-based approaches to gait-based human recognition, including newly developed techniques where the both the model and the data (obtained from multiple cameras) are in 3D. In addition, the work considers new video-based techniques for face profile recognition, and for the super-resolution of facial imagery obtained at different angles. Finally, the book investigates integrated systems that detect and fuse both gait and face biometrics from video data. Topics and features: discusses a framework for human gait analysis based on Gait Energy Image, a spatio-temporal gait representation; evaluates the discriminating power of model-based gait features using Bayesian statistical analysis; examines methods for human recognition using 3D gait biometrics, and for moving-human detection using both color and thermal image sequences; describes approaches for the integration face profile and gait biometrics, and for super-resolution of frontal and side-view face images; introduces an objective non-reference quality evaluation algorithm for super-resolved images; presents performance comparisons between different biometrics and different fusion methods for integrating gait and super-resolved face from video. This unique and authoritative text is an invaluable resource for researchers and graduate students of computer vision, pattern recognition and biometrics. The book will also be of great interest to professional engineers of biometric systems.
Book Synopsis Articulated Motion and Deformable Objects by :
Download or read book Articulated Motion and Deformable Objects written by and published by . This book was released on 2004 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Video-Based Rendering by : Marcus A. Magnor
Download or read book Video-Based Rendering written by Marcus A. Magnor and published by CRC Press. This book was released on 2005-08-08 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by consumer-market applications that enjoy steadily increasing economic importance, graphics hardware and rendering algorithms are a central focus of computer graphics research. Video-based rendering is an approach that aims to overcome the current bottleneck in the time-consuming modeling process and has applications in areas such as comput
Book Synopsis Visual Perception Through Video Imagery by : Michel Dhome
Download or read book Visual Perception Through Video Imagery written by Michel Dhome and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: For several decades researchers have tried to construct perception systems based on the registration data from video cameras. This work has produced various tools that have made recent advances possible in this area. Part 1 of this book deals with the problem of the calibration and auto-calibration of video captures. Part 2 is essentially concerned with the estimation of the relative object/capture position when a priori information is introduced (the CAD model of the object). Finally, Part 3 discusses the inference of density information and the shape recognition in images.
Book Synopsis Dynamic 3D Scene Analysis and Modeling with a Time-of-flight Camera by : Ingo Schiller
Download or read book Dynamic 3D Scene Analysis and Modeling with a Time-of-flight Camera written by Ingo Schiller and published by BoD – Books on Demand. This book was released on 2011 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Viele Anwendungen des Maschinellen Sehens benötigen die automatische Analyse und Rekonstruktion von statischen und dynamischen Szenen. Deshalb ist die automatische Analyse von dreidimensionalen Szenen und Objekten ein Bereich der intensiv erforscht wird. Die meisten Ansätze konzentrieren sich auf die Rekonstruktion statischer Szenen, da die Rekonstruktion nicht-statischer Geometrien viel herausfordernder ist und voraussetzt, dass dreidimensionale Szeneninformation mit hoher zeitlicher Auflösung verfügbar ist. Statische Szenenanalyse wird beispielsweise in der autonomen Navigation, für die Überwachung und für die Erhaltung des Kulturerbes eingesetzt. Andererseits eröffnet die Analyse und Rekonstruktion nicht-statischer Geometrie viel mehr Möglichkeiten, nicht nur für die bereits erwähnten Anwendungen. In der Produktion von Medieninhalten für Film und Fernsehen kann die Analyse und die Aufnahme und Wiedergabe von vollständig dreidimensionalen Inhalten verwendet werden um neue Ansichten realer Szenen zu erzeugen oder echte Schauspieler durch animierte virtuelle Charaktere zu ersetzen. Die wichtigste Voraussetzung für die Analyse von dynamischen Inhalten ist die Verfügbarkeit von zuverlässigen dreidimensionalen Szeneninformationen. Um die Entfernung von Punkten in der Szene zu bestimmen wurden meistens Stereo-Verfahren eingesetzt, aber diese Verfahren benötigen viel Rechenzeit und erreichen in Echtzeit nicht die benötigte Qualität. In den letzten Jahren haben die so genannten Laufzeitkameras das Stadium der Prototypen verlassen und sind jetzt in der Lage dichte Tiefeninformationen in vernünftiger Qualität zu einem vernünftigen Preis zu liefern. Diese Arbeit untersucht die Eignung dieser Kameras für die Analyse nicht-statischer dreidimensionaler Szenen. Bevor eine Laufzeitkamera für die Analyse eingesetzt werden kann muss sie intern und extern kalibriert werden. Darüber hinaus leiden Laufzeitkameras an systematischen Fehlern bei der Entfernungsmessung, bedingt durch ihr
Book Synopsis Handbook of Video Databases by : Borko Furht
Download or read book Handbook of Video Databases written by Borko Furht and published by CRC Press. This book was released on 2003-09-30 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology has spurred the growth of huge image and video libraries, many growing into the hundreds of terabytes. As a result there is a great demand among organizations for the design of databases that can effectively support the storage, search, retrieval, and transmission of video data. Engineers and researchers in the field demand a comprehensi
Download or read book Human Motion written by Bodo Rosenhahn and published by Springer Science & Business Media. This book was released on 2008 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book which informs about recent progress in biomechanics, computer vision and computer graphics – all in one volume. Researchers from these areas have contributed to this book to promote the establishment of human motion research as a multi-facetted discipline and to improve the exchange of ideas and concepts between these three areas. The book combines carefully written reviews with detailed reports on recent progress in research.
Book Synopsis The Essential Guide to Video Processing by : Alan C. Bovik
Download or read book The Essential Guide to Video Processing written by Alan C. Bovik and published by Academic Press. This book was released on 2009-07-07 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and state-of-the art approach to video processing gives engineers and students a comprehensive introduction and includes full coverage of key applications: wireless video, video networks, video indexing and retrieval and use of video in speech processing. Containing all the essential methods in video processing alongside the latest standards, it is a complete resource for the professional engineer, researcher and graduate student. - Numerous conceptual and numerical examples - All the latest standards are thoroughly covered: MPEG-1, MPEG-2, MPEG-4, H.264 and AVC - Coverage of the latest techniques in video security "Like its sister volume "The Essential Guide to Image Processing," Professor Bovik's Essential Guide to Video Processing provides a timely and comprehensive survey, with contributions from leading researchers in the area. Highly recommended for everyone with an interest in this fascinating and fast-moving field." —Prof. Bernd Girod, Stanford University, USA - Edited by a leading person in the field who created the IEEE International Conference on Image Processing, with contributions from experts in their fields - Numerous conceptual and numerical examples - All the latest standards are thoroughly covered: MPEG-1, MPEG-2, MPEG-4, H.264 and AVC - Coverage of the latest techniques in video security
Book Synopsis Computer Vision – ECCV 2018 by : Vittorio Ferrari
Download or read book Computer Vision – ECCV 2018 written by Vittorio Ferrari and published by Springer. This book was released on 2018-10-06 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sixteen-volume set comprising the LNCS volumes 11205-11220 constitutes the refereed proceedings of the 15th European Conference on Computer Vision, ECCV 2018, held in Munich, Germany, in September 2018.The 776 revised papers presented were carefully reviewed and selected from 2439 submissions. The papers are organized in topical sections on learning for vision; computational photography; human analysis; human sensing; stereo and reconstruction; optimization; matching and recognition; video attention; and poster sessions.
Book Synopsis Computer Vision – ECCV 2012 by : Andrew Fitzgibbon
Download or read book Computer Vision – ECCV 2012 written by Andrew Fitzgibbon and published by Springer. This book was released on 2012-09-26 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seven-volume set comprising LNCS volumes 7572-7578 constitutes the refereed proceedings of the 12th European Conference on Computer Vision, ECCV 2012, held in Florence, Italy, in October 2012. The 408 revised papers presented were carefully reviewed and selected from 1437 submissions. The papers are organized in topical sections on geometry, 2D and 3D shapes, 3D reconstruction, visual recognition and classification, visual features and image matching, visual monitoring: action and activities, models, optimisation, learning, visual tracking and image registration, photometry: lighting and colour, and image segmentation.
