Download or read book A Quantified Study of Facial Asymmetry in 3D Faces written by Yanxi Liu and published by . This book was released on 2003 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "With the rapid development of 3D imaging technology, the wide usage of 3D surface information for research and applications is becoming a convenient reality. This study is focused on a quantified analysis of facial asymmetry of more than 100 3D human faces (individuals). We investigate whether facial asymmetry differs statistically significantly from a bilateral symmetry assumption, and the role of global and local facial asymmetry for gender discrimination."

Download or read book Oral and Maxillofacial Surgery for the Clinician written by Krishnamurthy Bonanthaya and published by Springer Nature. This book was released on 2021 with total page 1965 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Analysis of Human Face Shape Abnormalities Using Machine Learning written by Jia Wu and published by . This book was released on 2014 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because the capture of 3D facial form for people with medical conditions has become a practical reality, much research has been done using computer-based automatic methods to study 3D facial characteristics. This study focuses on face abnormality, especially, children with cleft lip and/or palate. Cleft lip is a birth defect that results in deformity of the upper lip and nose. Its severity is widely variable and the results of treatment are influenced by the initial deformity. Objective assessment of severity would help to guide prognosis and treatment. Given that facial asymmetry increases directly with increasing cleft severity, the main focus of this thesis is the quantification of asymmetry and nasal deformity. In our study, we developed an automated computer-based system for facial analysis that can greatly facilitate medical researchers. Our system takes raw 3D data, automatically crops the region of interest (the face), and normalizes the 3D face mesh. Then 20 landmarks are automatically located using geometric information followed by a deformable registration method. These landmarks are used for locating the mid-facial reference plane, which sets up the reference to compare the left and right side of the face. The plane is used to provide a ranking order based on the severity of cleft lip using a learning-to-rank algorithm. Last but not least, asymmetry and nasal deformity descriptors are calculated to provide quantitative scores. The main contributions of this work are: an automated methodology for cleaning raw data and pose normalization; an automated landmark location method; a machine learning technique that detect landmark-related regions; two original algorithms to find the mid-facial reference planes and their evaluation; features for ranking the severity of cleft lip; and six descriptors for asymmetry and nasal deformity, which are highly correlated to the ranking orders provided by medical expert.

Download or read book Medical Image Computing and Computer Assisted Intervention MICCAI 2008 written by Dimitris N. Metaxas and published by Springer Science & Business Media. This book was released on 2008 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation The two-volume set LNCS 5241 and LNCS 5242 constitute the refereed proceedings of the 11th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2008, held in New York, NY, USA, in September 2008.The program committee carefully selected 258 revised papers from numerous submissions for presentation in two volumes, based on rigorous peer reviews. The first volume includes 127 papers related to medical image computing, segmentation, shape and statistics analysis, modeling, motion tracking and compensation, as well as registration. The second volume contains 131 contributions related to robotics and interventions, statistical analysis, segmentation, intervention, modeling, and registration.

Download or read book Computer Vision ECCV 2014 Workshops written by Lourdes Agapito and published by Springer. This book was released on 2015-03-19 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four-volume set LNCS 8925, 8926, 8927, and 8928 comprises the thoroughly refereed post-workshop proceedings of the Workshops that took place in conjunction with the 13th European Conference on Computer Vision, ECCV 2014, held in Zurich, Switzerland, in September 2014. The 203 workshop papers were carefully reviewed and selected for inclusion in the proceedings. They where presented at workshops with the following themes: where computer vision meets art; computer vision in vehicle technology; spontaneous facial behavior analysis; consumer depth cameras for computer vision; "chalearn" looking at people: pose, recovery, action/interaction, gesture recognition; video event categorization, tagging and retrieval towards big data; computer vision with local binary pattern variants; visual object tracking challenge; computer vision + ontology applies cross-disciplinary technologies; visual perception of affordance and functional visual primitives for scene analysis; graphical models in computer vision; light fields for computer vision; computer vision for road scene understanding and autonomous driving; soft biometrics; transferring and adapting source knowledge in computer vision; surveillance and re-identification; color and photometry in computer vision; assistive computer vision and robotics; computer vision problems in plant phenotyping; and non-rigid shape analysis and deformable image alignment. Additionally, a panel discussion on video segmentation is included.

Download or read book Biomedical Visualisation written by Paul M. Rea and published by Springer. This book was released on 2019-03-27 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume explores the use of technology to enable us to visualise the life sciences in a more meaningful and engaging way. It will enable those interested in visualisation techniques to gain a better understanding of the applications that can be used in imaging and analysis, education, engagement and training. The reader will be able to explore the utilisation of technologies from a number of fields to enable an engaging and meaningful visual representation of the life sciences. This use of technology-enhanced learning will be of benefit for the learner, trainer, in patient care and the wider field of education and engagement. By examining a range of techniques in image capture (photogrammetery, stereophotogrammetry, microphotogrammetry and autostereoscopy), this book will showcase the wide range of tools we can use. Researchers in this field will be able to find something suitable to apply to their work to enhance user engagement through improved visual means using the technologies we have available to us today. It will highlight the uses of these technologies to examine many aspects of the human body, and enable improved ways to enhance visual and tactile learning, including 3D printing. By demonstrating co-design processes, working directly with the end-stage users (including patients), it will also highlight successes in adopting tools like hand motion tracking rehabilitation for patients with conditions like multiple sclerosis. The book will also discuss the applications of immersive environments including virtual, augmented and mixed reality. The ultimate aim is to show how, by using these tools, we can enhance communication, mobile applications, health literacy and illustration of both normal and pathological processes in the body. By applying a wide range of tools and technologies, this volume will highlight the wide range of applications in education, training and learning both for students and faculty, but also for patient care and education. Therefore, the work presented here can be accessed by a wide range of users from faculty and students involved in the design and development of these processes, by examining the pedagogy around these technologies. Importantly, it presents material, which will be of benefit for the patient, engaging them to become more involved with techniques like physiotherapy.

Download or read book Three dimension Facial De ageing and Ageing Modeling written by Farnaz Majid Zadeh Heravi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis is to deploy and develop mathematical models to digitally simulate the human faces at any target age. The state-of-the-art in ageing modeling has not addressed the role of biological maturation from infancy to young adulthood where the anthropometrical displacements are occurring. In addition, the three dimensional (3D) face representation is considered in this thesis. The depth and pose variation provides additional information to represent faces accurately.Contrary to numerous studies that focused on 2D facial ageing and predicting the face appearance in the future, this thesis proposes the mathematical de-ageing and ageing models using 3D facial textured meshes of human faces considering the natural trajectory of ageing development during childhood, adulthood and senility.For the purpose of model construction, the face templates are reconstructed in 3D for the age groups from 3 to 75 years old for both genders.To validate the results, three metrics are defined to assess the faces from textural, geometrical and landmark distortion aspects. The metrics were applied on the collected database Face Time-Machine (FaceTim V.2.0) which contains the ground truth 3D faces. The results of the performance evaluation metric on the de-ageing model known as 3D B-FAM show the similarity rate of 75% which means the model does not represent significant disparity.Having considered that facial ageing phenomenon rely on various intrinsic and extrinsic circumstances, we propose a dynamic shape model as a fusion of de-ageing ageing models. This model takes into account the facial shape variations due to lifestyle and nutritious diet. The rendering results indicate that they are perceptually satisfying. Besides, the evaluation results show that the proposed models are remarkably accurate to predict the correct face appearance of an individual in the target age and shape.Furthermore, we address facial asymmetry for methamphetamine addicts using a collected drug-addicted face database. The facial asymmetry is assessed by employing the structural similarity index for textural aspect; and bilateral features for morphological quantification. Statistical analysis indicates a significant increment of facial asymmetry for methamphetamine addicts while ageing. The statistical analysis shows that for drug-addicts, the asymmetry measurement in faces before using drugs is 2% in geometry aspect and it reaches to more than 5%. This increment is seen in textural aspect where the similarity index is 28% and points to 39% for drug addicts.

Download or read book Computational Symmetry in Computer Vision and Computer Graphics written by Yanxi Liu and published by Now Publishers Inc. This book was released on 2010 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the arts and sciences, as well as in our daily lives, symmetry has made a profound and lasting impact. Likewise, a computational treatment of symmetry and group theory (the ultimate mathematical formalization of symmetry) has the potential to play an important role in computational sciences. Though the term Computational Symmetry was formally defined a decade ago by the first author, referring to algorithmic treatment of symmetries, seeking symmetry from digital data has been attempted for over four decades. Computational symmetry on real world data turns out to be challenging enough that, after decades of effort, a fully automated symmetry-savvy system remains elusive for real world applications. The recent resurging interests in computational symmetry for computer vision and computer graphics applications have shown promising results. Recognizing the fundamental relevance and potential power that computational symmetry affords, we offer this survey to the computer vision and computer graphics communities. This survey provides a succinct summary of the relevant mathematical theory, a historic perspective of some important symmetry-related ideas, a partial yet timely report on the state of the arts symmetry detection algorithms along with its first quantitative benchmark, a diverse set of real world applications, suggestions for future directions and a comprehensive reference list.

Download or read book 3D Imaging Analysis and Applications written by Yonghuai Liu and published by Springer Nature. This book was released on 2020-09-11 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook is designed for postgraduate studies in the field of 3D Computer Vision. It also provides a useful reference for industrial practitioners; for example, in the areas of 3D data capture, computer-aided geometric modelling and industrial quality assurance. This second edition is a significant upgrade of existing topics with novel findings. Additionally, it has new material covering consumer-grade RGB-D cameras, 3D morphable models, deep learning on 3D datasets, as well as new applications in the 3D digitization of cultural heritage and the 3D phenotyping of crops. Overall, the book covers three main areas: ● 3D imaging, including passive 3D imaging, active triangulation 3D imaging, active time-of-flight 3D imaging, consumer RGB-D cameras, and 3D data representation and visualisation; ● 3D shape analysis, including local descriptors, registration, matching, 3D morphable models, and deep learning on 3D datasets; and ● 3D applications, including 3D face recognition, cultural heritage and 3D phenotyping of plants. 3D computer vision is a rapidly advancing area in computer science. There are many real-world applications that demand high-performance 3D imaging and analysis and, as a result, many new techniques and commercial products have been developed. However, many challenges remain on how to analyse the captured data in a way that is sufficiently fast, robust and accurate for the application. Such challenges include metrology, semantic segmentation, classification and recognition. Thus, 3D imaging, analysis and their applications remain a highly-active research field that will continue to attract intensive attention from the research community with the ultimate goal of fully automating the 3D data capture, analysis and inference pipeline.

Download or read book Computer Graphic Facial Reconstruction written by John G. Clement and published by Elsevier. This book was released on 2005-07-02 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique books looks at a cost-efficient, fast and accurate means of facial reconstruction--from segmented, decomposed, or skeletal remains--using computer-graphic and computational means.Computer-Graphic Facial Reconstruction is designed as a valuable resource for those scientists designing new research projects and protocols, as well as a practical handbook of methods and techniques for medico-legal practitioners who actually identify the faceless victims of crime. It looks at a variety of approaches: artificial intelligence using neural networks, case-based reasoning, Baysian belief systems, along with a variety of imaging methods: radiological, CT, MRI and the use of imaging devices.The methods described in this book complement, or may even replace, the less-reliable, more traditional means of securing identification by presumptive means, i.e., recognition of clothing, personal effects and clay reconstruction.- Covers cutting-edge technologies in the context of historical forensic reconstruction methods- Features stellar authors from around the globe- Bridges the areas of computer graphics, animation, and forensic anthropology

Download or read book Temporary Anchorage Devices in Clinical Orthodontics written by Jae Hyun Park and published by John Wiley & Sons. This book was released on 2020-04-21 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the latest information on all aspects of using temporary anchorage devices in clinical orthodontics, from diagnosis and treatment planning to appliances and applications Written by some of the world’s leading experts in orthodontics, Temporary Anchorage Devices in Clinical Orthodontics is a comprehensive, up-to-date reference that covers all aspects of temporary anchorage device (TAD) use in contemporary orthodontics. Taking a real-world approach to the subject, it covers topics ranging from diagnosis and treatment planning to the many applications and management of complications. Case studies demonstrate the concepts, and high-quality clinical photographs support the text throughout. The book begins with an overview of clinical applications and fundamental principles of TADs. It then goes on to cover biomechanical considerations for controlling target tooth movement with TADs. Biomechanical simulations for various clinical scenarios treated with TADs are addressed next, followed by an examination of histological aspects during the healing process and anatomical considerations with TADs. Other chapters cover: Class II Correction with TADs, Distalization with TADs, TAD-anchored Maxillary Protraction, Maxillary Expansion with TADs, Anterior Open Bite Correction with TADs, TAD-assisted Aligner Therapy, TADs vs. Orthognathic Surgery; Legal Considerations When Using TADs; and much more. Provides evidence-based information on the use of TADs, with a focus on improving outcomes for patients Considers topics ranging from diagnosis and treatment planning to specific clinical applications and appliances Takes a real-world clinical approach, with case studies demonstrating concepts Written by international experts in the field Presents hundreds of high-quality clinical photographs to support the text Temporary Anchorage Devices in Clinical Orthodontics is an essential resource for orthodontists and orthodontic residents.

Download or read book Experiments with Quantified Facial Asymmetry for Human Identification written by Yanxi Liu and published by . This book was released on 2002 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Human facial asymmetry has long been a critical factor for evaluations of attractiveness and facial expressions in psychology and anthropology. However, it has rarely been used in human identification tasks. We investigate the effect of quantified statistical facial asymmetry as a biometric under expression variations. Our findings show that the asymmetry measure of automatically selected facial regions captures individual differences that are relatively stable to facial expression variations. More importantly, the synergy of combining Asymmetry faces with conventional Fisherface method using data from a publicly available face databases (Cohn-Kanade and FERET) is quantitatively evaluated. The improvements on classification accuracy are shown to be statistically significant. Five different experiments are setup for Fisherfaces on 55 subjects from Cohn-Kanade database: (1) train on anger and disgust test on joy, (2) train on joy and anger test on disgust, (3) train on disgust and joy test on anger, (4) train on neutral faces and test on peak expressions, and (5) train on peak expressions test on neutral faces. By the addition of facial asymmetry information and an automatic image feature subset selection procedure, the classification error rates of (1) is reduced 45%, and of (2)-(5) are reduced to zero."

Download or read book Facial Growth written by Donald H. Enlow and published by W.B. Saunders Company. This book was released on 1990 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Three Dimensional Imaging for Orthodontics and Maxillofacial Surgery written by Chung H. Kau and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three Dimensional Imaging for Orthodontics and Maxillofacial Surgery is a major new specialist resource that identifies and applies the principles of three dimensional imaging to orthodontic practice. Readers are introduced to three-dimensional imaging, comparing it with the traditional two-dimensional assessments and exploring the benefits and drawbacks of these imaging modalities. Three Dimensional Imaging for Orthodontics and Maxillofacial Surgery centers on the appropriate application of three-dimensional imaging in the various practices related to orthodontic delivery and craniofacial surgery. The book guides the reader through detailed and illustrated examples of three-dimensional patient management in the context of daily practice. Both three-dimensional static and motion analyses are explored. The book also addresses growth, orthodontic treatment and surgical prediction, both static and dynamic and explores the use of morphing and finite element analyses with particular focus on surgical intervention. A key resource for specialist working in the fields of orthodontics and cranio-maxillofacial surgery. KEY FEATURES · Applies principles of 3D imaging to orthodontic practice · Surveys and analyzes current technologies and modalities, relating them to clinical usage · Companion website with motion images ( www.wiley.com/go/kau) · Richly illustrated in full color throughout · Brings together expert contributors for an international perspective

Download or read book Cognitive Representation of Facial Asymmetry written by David White and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The human face displays mild asymmetry, with measurements of facial structure differing from left to right of the meridian by an average of three percent. Presently this source of variation is of theoretical interest primarily to researchers studying the perception of beauty, but a very limited amount of research has addressed the question of how this variation contributes to the cognitive processes underlying face recognition. This is surprising given that measurement of facial asymmetry can reliably distinguish between even the most similar of faces. Furthermore, brain regions responsible for symmetry detection support face-processing regions, and detection of symmetry is superior in upright faces relative to inverted and contrast-reversed face stimuli. In addition, facial asymmetry provides a useful biometric for automatic face recognition systems, and understanding the contribution of facial asymmetry in human face recognition may therefore inform the development of these systems. In this thesis the extent to which facial asymmetry is implicated in the process of recognition in human participants is quantified. By measuring the effect of left-right reversal on various tasks of face processing, the degree to which facial asymmetry is represented by memory is investigated. Marginal sensitivity to mirror reversal is demonstrated in a number of instances, and it is therefore concluded that cognitive representations of faces specify structural asymmetry. Reversal effects are typically slight however and on a number of occasions no reliable effect of this stimulus manipulation is detected. It is likely that a general tendency to treat mirror reversals as equivalent stimuli, in addition to an inability to recall lateral orientation of objects from memory, somewhat obscure the effect of reversal. The findings are discussed in the context of existing literature examining the way in which faces are cognitively represented.

Download or read book Advances in Biometrics written by Seong-Whan Lee and published by Springer. This book was released on 2007-08-30 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the International Conference on Biometrics, ICB 2007, held in Seoul, Korea, August 2007. Biometric criteria covered by the papers are assigned to face, fingerprint, iris, speech and signature, biometric fusion and performance evaluation, gait, keystrokes, and others. In addition, the volume also announces the results of the Face Authentication Competition, FAC 2006.

Download or read book Shape based Quantification and Classification of 3D Face Data for Craniofacial Research written by Katarzyna Wilamowska and published by . This book was released on 2009 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: