Image Based 3d Reconstruction And Articulation Of The Human Body Shape And Its Use In The Creation Of Virtual Fitting Rooms
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Image Based 3d Reconstruction And Articulation Of The Human Body Shape And Its Use In The Creation Of Virtual Fitting Rooms
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Author : Chenxi Li
language : en
Publisher:
Release Date : 2020
Image Based 3d Reconstruction And Articulation Of The Human Body Shape And Its Use In The Creation Of Virtual Fitting Rooms written by Chenxi Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Electrical engineering categories.
Image-based 3D shape reconstruction is essential for 3D modeling in recognition, virtual reality, generation of video games, 3D animation, and in the creation of 3D virtual fitting rooms - the sought-after application in this dissertation. In this work, we propose a novel reconstruction method that uses a generic 3D model that roughly controls the overall reconstruction shape which in turn, reduces the number of 2D images needed to just two (frontal and profile) for obtaining a 3D point model. The generic model consists of a massive set of 3D points that lack saliency, topological meaning, and relational interconnections. This is also true about points in the two canonical images. In this work, we propose finding a small set of interconnected ordered intrinsic salient points (control points) residing on the silhouette of the projections of the generic model onto the two image spaces, as well as finding those for the canonical images. Points on the generic model and the images are automatically given saliency with order and interconnections through loop-subdivision operating on those control points and their equivalent points on the canonical images. The transformation of the generic model into the specific object is done through morphing the points on the generic model to follow and be consistent with their equivalent points on the canonical images. The control points on the canonical images are automatically obtained using an active shape model (ASM) that modifies an average trained control point set attained using an offline training, to account for class shape variability and boundary regularization guaranteeing the control points to reside on the silhouette (boundary) of the individual. The reconstructed 3D model is furtherly refined through smoothing the reconstructed surface, while fixing local holes using a principle component analysis (PCA) decomposition. This reconstruction method is convenient, simple, efficient, and results in an average geometric error of less than 0.5% over 700 diverse body models from the CAESAR dataset. We then implement the contour-based articulated model to the personalized 3D model for pose recovery. The evolution of the model through the articulation process is captured in a video clip. 3D transformations are found and applied to the 3D model on its parts so that the projections of the 3D model 'match' those observed in the video sequence at corresponding frames. This is done by minimizing the error between the frontal projection body region points and the target points from the image for each independent moving part, with sub-resolution recovery errors. Once the personalized 3D model is obtained and the articulated model is implemented, the algorithm simulates how garments virtually appear on the reconstructed person under different poses. Different types of clothes are classified as tight or loose, where for the first type of garments, the garment is mapped onto the person's body, whereas for the second type, the mapping adjusts to accommodate the loose nature of the garment, and its fitting on the body of the reconstructed person model. This creates a virtual in-home fitting room for garment fitting, which is timely and is a needed application that would go hand in hand with online clothes shopping, allowing the trying of garments at home with changing poses before ordering them, and can be updated as often as necessary to accommodate changes in physique, weight, aging, etc. This is also done with minimum requirements from the user aside from taking two images and a video of pose articulations using their cam or smart phone, and stands as a useful, needed, and attractive App.
Image Based Rendering
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Author : Heung-Yeung Shum
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-05-26
Image Based Rendering written by Heung-Yeung Shum 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 2008-05-26 with Computers categories.
Focusing exclusively on Image-Based Rendering (IBR) this book examines the theory, practice, and applications associated with image-based rendering and modeling. Topics covered vary from IBR basic concepts and representations on the theory side to signal processing and data compression on the practical side. One of the only titles devoted exclusively to IBR this book is intended for researchers, professionals, and general readers interested in the topics of computer graphics, computer vision, image process, and video processing. With this book advanced-level students in EECS studying related disciplines will be able to seriously expand their knowledge about image-based rendering.
3d Reconstruction For Plastic Surgery Simulation Based On Statistical Shape Models
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Author : Guillermo Ruiz Fernández
language : en
Publisher:
Release Date : 2018
3d Reconstruction For Plastic Surgery Simulation Based On Statistical Shape Models written by Guillermo Ruiz Fernández and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This thesis has been accomplished in Crisalix in collaboration with the Universitat Pompeu Fabra within the program of Doctorats Industrials. Crisalix has the mission of enhancing the communication between professionals of plastic surgery and patients by providing a solution to the most common question during the surgery planning process of ̀̀How will I look after the surgery?''. The solution proposed by Crisalix is based in 3D imaging technology. This technology generates the 3D reconstruction that accurately represents the area of the patient that is going to be operated. This is followed by the possibility of creating multiple simulations of the plastic procedure, which results in the representation of the possible outcomes of the surgery. This thesis presents a framework capable to reconstruct 3D shapes of faces and breasts of plastic surgery patients from 2D images and 3D scans. The 3D reconstruction of an object is a challenging problem with many inherent ambiguities. Statistical model based methods are a powerful approach to overcome some of these ambiguities. We follow the intuition of maximizing the use of available prior information by introducing it into statistical model based methods to enhance their properties. First, we explore Active Shape Models (ASM) which are a well known method to perform 2D shapes alignment. However, it is challenging to maintain prior information (e.g. small set of given landmarks) unchanged once the statistical model constraints are applied. We propose a new weighted regularized projection into the parameter space which allows us to obtain shapes that at the same time fulfill the imposed shape constraints and are plausible according to the statistical model. Second, we extend this methodology to be applied to 3D Morphable Models (3D07), which are a widespread method to perform 3D reconstruction. However, existing methods present some limitations. Some of them are based in non-linear optimizations computationally expensive that can get stuck in local minima. Another limitation is that not all the methods provide enough resolution to represent accurately the anatomy details needed for this application. Given the medical use of the application, the accuracy and robustness of the method, are important factors to take into consideration. We show how 3D07 initialization and 3D07 fitting can be improved using our weighted regularized projection. Finally, we present a framework capable to reconstruct 3D shapes of plastic surgery patients from two possible inputs: 2D images and 3D scans. Our method is used in different stages of the 3D reconstruction pipeline: shape alignment; 3D07 initialization and 3D07 fitting. The developed methods have been integrated in the production environment of Crisalix, proving their validity.
The Glossary Of Prosthodontic Terms
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Author :
language : en
Publisher:
Release Date : 1994
The Glossary Of Prosthodontic Terms written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Prosthodontics categories.
Computer Methods In Biomechanics And Biomedical Engineering
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Author : J. Middleton
language : en
Publisher: CRC Press
Release Date : 1996-03-18
Computer Methods In Biomechanics And Biomedical Engineering written by J. Middleton and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-03-18 with Medical categories.
These papers are concerned with new advances and novel solutions in the areas of biofluids, image-guided surgery, tissue engineering and cardovascular mechanics, implant analysis, soft tissue mechanics, bone remodeling and motion analysis. The contents also feature a special section on dental materials, dental adhesives and orthodontic mechanics. This edition contains many examples, tables and figures, and together with the many references, provides the reader with invaluable information on the latest theoretical developments and applications.
Simulating Humans
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Author : Norman I. Badler
language : en
Publisher: Oxford University Press
Release Date : 1993-06-17
Simulating Humans written by Norman I. Badler and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-06-17 with Computers categories.
During the past decade, high-performance computer graphics have found application in an exciting and expanding range of new domains. Among the most dramatic developments has been the incorporation of real-time interactive manipulation and display for human figures. Though actively pursued by several research groups, the problem of providing a synthetic or surrogate human for engineers and designers already familiar with computer-aided design techniques was most comprehensively solved by Norman Badler's computer graphics laboratory at the University of Pennsylvania. The breadth of that effort as well as the details of its methodology and software environment are presented in this volume. The book is intended for human factors engineers interested in understanding how a computer-graphics surrogate human can augment their analyses of designed environments. It will also inform design engineers of the state of the art in human figure modeling, and hence of the human-centered design central to the emergent concept of concurrent engineering. In fulfilling these goals, the book additionally documents for the entire computer graphics community a major research effort in the interactive control of articulated human figures.
Virtual Reality
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Author : Pietro Cipresso
language : en
Publisher: Nova Science Publishers
Release Date : 2014-01-12
Virtual Reality written by Pietro Cipresso and has been published by Nova Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-12 with Virtual reality in medicine categories.
One of the most amazing capacities of the human mind is its ability to go beyond its boundaries. The well-known example of the "blind man" by Gregory Bateson helps us understand how our mind is able to expand its potentiality thanks to the use of a tool. This famous example demonstrates two specific features that characterize the relationship between the human mind and the use of tool. From a neuropsychological point of view, the tool is integrated in near space, extending it to the end point of the instrument. From a phenomenological point of view, we are present in the tool because we can use it in an intuitive way to realize our intentions. As Riva and Mantovani suggested, there is also another type of relationship between mind and technology, namely the second-order mediated action. In this case, the subject uses the body to control a distal tool that controls a different one to exert an action upon an external object. An example of a second-order mediated action is what happens with Virtual Reality (VR): I use my body to move an avatar (a distal tool) to exert an action upon an external object (a virtual environment). On one side, the outcome of this process further extends the space of action. From an experiential viewpoint, when interacting in a virtual space, we are also present in the distal virtual environment. On these theoretical bases, it is clear what makes VR development distinctively important is that it represents more than a simple technology in different domains of human society. In recent years, the field of VR has grown immensely. Practical applications for the use of this advanced technology encompasses many fields, from personnel training supported by interactive 3D images in industrial centers, to the use of interactive virtual environments for marketing purposes. One of the newest fields to benefit from the advances in VR technology is medicine and healthcare. Impressive advances in technology, coupled with a reduction in the economic costs have supported the development of more usable, useful, and accessible VR systems that can uniquely target a range of physical, psychological, and cognitive clinical targets and research questions. The aim of the book Virtual Reality-Technologies, Medical Applications, and Challenges is twofold: (1) to provide a critical overview of the most interesting medical applications of VR technologies and (2) to reflect on the future challenges in this growing field.
Virtual Clothing
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Author : Pascal Volino
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Virtual Clothing written by Pascal Volino 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 2012-12-06 with Computers categories.
In an accessible style that will appeal to the professional, student and laymen, the authors explain the methods for creating and simulating clothes for virtual humans. Using numerous detailed illustrations, colourful images, and step-by-step analysis they map out the terrain of this exciting and cutting-edge discipline. Starting with the beginnings in the mid 1980s and the basic foundations from the field of mechanics, the reader is gradually introduced to the subject. The text draws on a number of related fields such as computer graphics, algorithmics, computational geometry, simulation, modeling, animation, visualization, and virtual reality. The MIRACloth system, developed by the authors, is used as a case study for the results and techniques discussed. The book comes with a CD-ROM featuring dynamic demonstrations of 3D clothes and fashion shows. This is an indispensable text for anybody who wants an intelligent and readable book on virtual clothing.
Digital Human Modeling
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Author : Vincent D. Duffy
language : en
Publisher: Springer
Release Date : 2007-08-24
Digital Human Modeling written by Vincent D. Duffy and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-24 with Computers categories.
This book constitutes the refereed proceedings of the First International Conference on Digital Human Modeling, DHM 2007, held in Beijing, China in July 2007. The papers thoroughly cover the thematic area of digital human modeling, addressing the following major topics: shape and movement modeling and anthropometry, building and applying virtual humans, medical and rehabilitation applications, as well as industrial and ergonomic applications.
Oral And Maxillofacial Surgery For The Clinician
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Author : Krishnamurthy Bonanthaya
language : en
Publisher: Springer Nature
Release Date : 2021
Oral And Maxillofacial Surgery For The Clinician written by Krishnamurthy Bonanthaya and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Face categories.
This is an open access book with CC BY 4.0 license. This comprehensive open access textbook provides a comprehensive coverage of principles and practice of oral and maxillofacial surgery. With a range of topics starting from routine dentoalveolar surgery to advanced and complex surgical procedures, this volume is a meaningful combination of text and illustrations including clinical photos, radiographs, and videos. It provides guidance on evidence-based practices in context to existing protocols, guidelines and recommendations to help readers deal with most clinical scenarios in their daily surgical work. This multidisciplinary textbook is meant for postgraduate trainees, young practicing oral surgeons and experienced clinicians, as well as those preparing for university and board certification exams. It also aids in decision-making, the implementation of treatment plans and the management of complications that may arise. This book is an initiative of Association of Oral and Maxillofacial Surgeons of India (AOMSI) to its commitment to academic medicine. As part of this commitment, this textbook is in open access to help ensure widest possible dissemination to readers across the world. ; Open access Unique presentation with contents divided into color-coded core competency gradations Covers all aspects of oral and maxillofacial surgery Supplemented with videos of all commonly carried out procedures as operative video Every chapter or topic concludes with "future perspective" and addresses cutting edge advances in each area Every topic has a pull out box that provides the most relevant systematic reviews/ key articles to every topic.