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Dissertations / Theses on the topic 'Active shape model, ASM'

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Published: 24 April 2022

Last updated: 30 July 2025

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1

Ruiz, Fernández Guillermo. "3D reconstruction for plastic surgery simulation based on statistical shape models." Doctoral thesis, Universitat Pompeu Fabra, 2018. http://hdl.handle.net/10803/667049.

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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

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Behaine, Carlos Alberto Ramirez. "Reconhecimento de padrões com tratamento de incertezas na localização de marcadores e modelos ativos de formas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/87988.

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As imagens são sinais que possuem muita informação. Os objetos representados em ima- gens podem sofrer deformações fazendo com que suas características mudem, o que difi- culta o reconhecimento do objeto. A chave para o sucesso de um sistema de reconheci- mento de padrões em imagens é escolher adequadamente a sua abordagem e um modelo para as feições presentes nas imagens. Uma das dificuldades é extrair e selecionar as feições que são mais discriminantes entre as diferentes classes usadas para modelar um objeto. Os modelos ativos de formas (Active Shape Models ASM) adaptam-se às defor- mações

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Zubi, Stephan al. "Active shape structural model." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=97445107X.

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Peloušek, Jan. "Sledování obličejových rysů v reálném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218823.

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This thesis considers the problematic of the object recognition in a digital picture, particularly about the human face recognition and its components. There are described the basics of the computer vision, the object detector Viola-Jones, its computer realization with help of the OpenCV libraries and the test results. This thesis also describes the accurate system of the facial features detection per the algorithm of the Active Shape Models and also related mechanism of the classifier training, including the software implementation.

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Kiefer, Bjoern. "A phenomenological constitutive model for magnetic shape memory alloys." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4712.

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A thermodynamics-based constitutive model is derived which predicts the nonlinear strain and magnetization response that magnetic shape memory alloys (MSMAs) exhibit when subjected to mechanical and magnetic loads. The model development is conducted on the basis of an extended thermo-magneto-mechanical framework. A novel free energy function for MSMAs is proposed, from which the constitutive equations are derived in a thermodynamically-consistent manner. The nonlinear and hysteretic nature of the macroscopic material behavior is captured through the evolution of internal state variables which

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Freire, Sobrinho Paulo. "Utilização do active shape model para análise de imagens médicas: localização do pulmão de crianças em radiografias para auxiliar no diagnóstico de pneumonia." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7316.

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Submitted by JÚLIO HEBER SILVA (julioheber@yahoo.com.br) on 2017-05-11T19:49:56Z No. of bitstreams: 2 Dissertação - Paulo Freire Sobrinho - 2017.pdf: 10088390 bytes, checksum: 93cbaefd8f5c2dc974201729c2e859f7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-05-15T11:30:14Z (GMT) No. of bitstreams: 2 Dissertação - Paulo Freire Sobrinho - 2017.pdf: 10088390 bytes, checksum: 93cbaefd8f5c2dc974201729c2e859f7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>

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Yu, Kai. "Thermomechanical behaviors of active network polymers." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53896.

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This dissertation work focuses on the thermomechanical behaviors of two recent exciting developments in active polymers: shape memory (SM) effects and covalent adaptive network polymers with bond exchange reactions. Both polymers are active in performing prescribed functions when an external stimulus is applied. The goals of the studies are to understand complex thermomechanical behaviors of such smart polymers through experiments, develop constitutive models to describe the behaviors, and use the developed models to assist their development and engineering applications. For the polymer SM eff

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Eicher, Anton. "Active Shape Model Segmentation of Brain Structures in MR Images of Subjects with Fetal Alcohol Spectrum Disorder." Thesis, University of Cape Town, 2010. http://pubs.cs.uct.ac.za/archive/00000637/.

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Fetal Alcohol Spectrum Disorder (FASD) is the most common form of preventable mental retardation worldwide. This condition affects children whose mothers excessively consume alcohol whilst pregnant. FASD can be identied by physical and mental defects, such as stunted growth, facial deformities, cognitive impairment, and behavioural abnormalities. Magnetic Resonance Imaging provides a non-invasive means to study the neural correlates of FASD. One such approach aims to detect brain abnormalities through an assessment of volume and shape of sub-cortical structures on high-resolution MR images. Tw

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Cament, Riveros Leonardo. "Enhancements by weighted feature fusion, selection and active shape model for frontal and pose variation face recognition." Tesis, Universidad de Chile, 2015. http://repositorio.uchile.cl/handle/2250/132854.

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Doctor en Ingeniería Eléctrica<br>Face recognition is one of the most active areas of research in computer vision because of its wide range of possible applications in person identification, access control, human computer interfaces, and video search, among many others. Face identification is a one-to-n matching problem where a captured face is compared to n samples in a database. In this work a new method for robust face recognition is proposed. The methodology is divided in two parts, the first one focuses in face recognition robust to illumination, expression and small age variation and the

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Kirschner, Matthias Verfasser], Dieter W. [Akademischer Betreuer] [Fellner, and Hans-Peter [Akademischer Betreuer] Meinzer. "The Probabilistic Active Shape Model: From Model Construction to Flexible Medical Image Segmentation / Matthias Kirschner. Betreuer: Dieter W. Fellner ; Hans-Peter Meinzer." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2013. http://d-nb.info/1107770297/34.

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Zhang, Xiaoliu. "MRI-based active shape model of the human proximal femur using fiducial and secondary landmarks and its validation." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6349.

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Osteoporosis, associated with reduced bone mineral density and structural degeneration, greatly increases the risk of fragility fracture. Magnetic resonance imaging (MRI) has been applied to central skeletal sites including the proximal femur due to its non-ionizing radiation. A major challenge of volumetric bone imaging of the hip is the selection of regions of interest (ROIs) for computation of regional bone measurements. To address this issue, an MRI-based active shape model (ASM) of the human proximal femur is applied to automatically generate ROIs. The challenge in developing the ASM for

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Spencer, Lisa. "REAL-TIME MONOCULAR VISION-BASED TRACKING FOR INTERACTIVE AUGMENTED REALITY." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4289.

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The need for real-time video analysis is rapidly increasing in today's world. The decreasing cost of powerful processors and the proliferation of affordable cameras, combined with needs for security, methods for searching the growing collection of video data, and an appetite for high-tech entertainment, have produced an environment where video processing is utilized for a wide variety of applications. Tracking is an element in many of these applications, for purposes like detecting anomalous behavior, classifying video clips, and measuring athletic performance. In this dissertation we focus on

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Ponsa, Mussarra Daniel. "Model-Based Visual Localisation Of Contours And Vehicles." Doctoral thesis, Universitat Autònoma de Barcelona, 2007. http://hdl.handle.net/10803/5782.

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El treball d'aquesta tesi es centra en l'anàlisi de seqüències de vídeo, aplicant tècniques basades en models per extreure'n informació quantitativa. En concret, es realitzen diferents propostes en dues àrees d'aplicació: el seguiment de formes basat en models de contorns, i la detecció i seguiment de vehicles en imatges proveïdes per una camera instal·lada en una plataforma mòbil.<br/>El treball dedicat al seguiment de formes s'enquadra en el paradigma de contorns actius, del qual presentem una revisió de les diferents propostes existents. En primer lloc, mesurem el rendiment obtingut pels a

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Ali, Rozniza. "Ensemble classification and signal image processing for genus Gyrodactylus (Monogenea)." Thesis, University of Stirling, 2014. http://hdl.handle.net/1893/21734.

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This thesis presents an investigation into Gyrodactylus species recognition, making use of machine learning classification and feature selection techniques, and explores image feature extraction to demonstrate proof of concept for an envisaged rapid, consistent and secure initial identification of pathogens by field workers and non-expert users. The design of the proposed cognitively inspired framework is able to provide confident discrimination recognition from its non-pathogenic congeners, which is sought in order to assist diagnostics during periods of a suspected outbreak. Accurate identif

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Chen, Cheng. "Mechanical and micro-structural modeling of trabecular bone by in vivo imaging." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2193.

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Osteoporosis is a bone disease associated with fracture risk. Accurate assessments of fracture risk, guidelines to initiate preventive intervention, and monitoring treatment response are of paramount importance in public health. Clinically, osteoporosis is defined by low bone mineral density, which explains 65-75% of the variance in bone stiffness. The remaining variability is due to the cumulative and synergistic effects of various factors, including trabecular bone micro-architecture. Osteoporostic imaging is critically important in identifying fracture risks for planning of therapeutic inte

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Wang, Chen. "Large-scale 3D environmental modelling and visualisation for flood hazard warning." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/3350.

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3D environment reconstruction has received great interest in recent years in areas such as city planning, virtual tourism and flood hazard warning. With the rapid development of computer technologies, it has become possible and necessary to develop new methodologies and techniques for real time simulation for virtual environments applications. This thesis proposes a novel dynamic simulation scheme for flood hazard warning. The work consists of three main parts: digital terrain modelling; 3D environmental reconstruction and system development; flood simulation models. The digital terrain model

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Blucha, Ondřej. "Určení azimutu natočení hlavy v záznamu bezpečnostní kamerou." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2017. http://www.nusl.cz/ntk/nusl-363736.

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This thesis attempts to create an application to determine head rotation angle in video recorded from a security camera. The application consists of three parts: face detection, facial landmarks detection and determination of person's head rotation. The face detection has been implemented using Viola-Jones and HOG algorithms. Facial landmarks detection has been done using algorithm based on active shape model. Two methods to calculate the head rotation angles have been used: the first method works with anthropometric head features. The second method uses Perspective-n-Point algorithm to find t

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Přinosil, Jiří. "Analýza emocionálních stavů na základě obrazových předloh." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233488.

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This dissertation thesis deals with the automatic system for basic emotional facial expressions recognition from static images. Generally the system is divided into the three independent parts, which are linked together in some way. The first part deals with automatic face detection from color images. In this part they were proposed the face detector based on skin color and the methods for eyes and lips position localization from detected faces using color maps. A part of this is modified Viola-Jones face detector, which was even experimentally used for eyes detection. The both face detectors

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Sun, Shanhui. "Automated and interactive approaches for optimal surface finding based segmentation of medical image data." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3543.

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Optimal surface finding (OSF), a graph-based optimization approach to image segmentation, represents a powerful framework for medical image segmentation and analysis. In many applications, a pre-segmentation is required to enable OSF graph construction. Also, the cost function design is critical for the success of OSF. In this thesis, two issues in the context of OSF segmentation are addressed. First, a robust model-based segmentation method suitable for OSF initialization is introduced. Second, an OSF-based segmentation refinement approach is presented. For segmenting complex anatomical struc

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Pereañez, Marco. "Enlargement, subdivision and individualization of statistical shape models: Application to 3D medical image segmentation." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/441754.

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This thesis presents three original and complementary approaches to enhance the quality of Statistical Shape Models (SSMs), that improve the accuracy of medical image segmentation in challenging applications. First, we enhance the statistical richness of SSMs by developing a technique capable of merging the shape representations and statistical properties of several pre-existing models with no original or additional raw data. Second, we enhance the geometrical quality of SSMs by developing a framework for modeling simultaneously both global and local characteristics of highly complex and

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Strecha, Juraj. "Sledování pohybu srdečního svalstva v ultrazvukovém záznamu." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-234947.

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he thesis deals with proposal of an algorithm and implementation of a program that tracks a motion of the heart muscle in the captured ultrasound video of the heart. The point position estimation is calculated by optical flow method. The Active Shape Model method is used to confirm the accuracy of point's position tracking. The user annotates desired structure of the heart arch first and the application displays new points which represent a new deformed heart shape.

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Zhang, Ligang. "Towards spontaneous facial expression recognition in real-world video." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/53199/1/Ligang_Zhang_Thesis.pdf.

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Facial expression is an important channel of human social communication. Facial expression recognition (FER) aims to perceive and understand emotional states of humans based on information in the face. Building robust and high performance FER systems that can work in real-world video is still a challenging task, due to the various unpredictable facial variations and complicated exterior environmental conditions, as well as the difficulty of choosing a suitable type of feature descriptor for extracting discriminative facial information. Facial variations caused by factors such as pose, age, gen

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Casero, Cañas Ramón. "Left ventricle functional analysis in 2D+t contrast echocardiography within an atlas-based deformable template model framework." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:b17b3670-551d-4549-8f10-d977295c1857.

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This biomedical engineering thesis explores the opportunities and challenges of 2D+t contrast echocardiography for left ventricle functional analysis, both clinically and within a computer vision atlas-based deformable template model framework. A database was created for the experiments in this thesis, with 21 studies of contrast Dobutamine Stress Echo, in all 4 principal planes. The database includes clinical variables, human expert hand-traced myocardial contours and visual scoring. First the problem is studied from a clinical perspective. Quantification of endocardial global and local funct

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Wang, Chun-Ching, and 王俊欽. "Face Recognition Using Active Shape Model." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/96690707349396253464.

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碩士<br>義守大學<br>資訊工程學系<br>92<br>Active Shape Model（ASM） is a flexible and deformable model that can be used to represent complex object. It can be easily applied to medical science, face and industrial recognition. In traditional ASM, the labeling of landmarks is manual which is very complicated process. Generally, the ASM need a large number of landmark to represent the detail feature, sufficiently. Therefore, the computation complexty is very high and difficult to apply the practical applications. We compare the facial shape with Hausdorff Distance. The advantage of Hausdorff Distan

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Zubi, Stephan al [Verfasser]. "Active shape structural model / von Stephan Al-Zubi." 2004. http://d-nb.info/97445107X/34.

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Wang, Wei-Chi, and 王偉齊. "Real time facial feature localization using active shape model." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/05025993295701710590.

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碩士<br>國立屏東教育大學<br>資訊科學系碩士班<br>102<br>In this thesis, we improve the approach published by Stephen Milborrow in 2007 to detect facial features quickly. The traditional ASM search needs to obtain the average face from training database, and the average face is used to calculate the facial features. In this thesis, we propose a way to use the facial features position of previous frame to being the initial position in current frame and ignore the detection of face position. Thereby, we remove the masses of computation to enhance the speed of the program. To improve the correctness of detecting the

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Liu, Fang-Zhang, and 劉方正. "3D Objects Warping Algorithm Based on the Active Shape Model." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/36708629031151815790.

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碩士<br>國立交通大學<br>資訊科學系所<br>92<br>Recently, there are many ways to do image warping. Most of them were based on Registration. The registration based approaches need many user assists and thus are not automatic methods. In this thesis, we developed a 3D warping algorithm based on the Active Shape Model (ASM). We call the proposed method the “Active Shape Models for Warping（ASMW）”. The method was applied to warp between mushroom bodies of fruit fly brain.

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Sheng-Shau, Peng, and 彭盛韶. "Generic Face Alignment using Active Shape Model with SupportVector Machine." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/94920168907937337749.

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碩士<br>國立臺灣大學<br>資訊網路與多媒體研究所<br>96<br>Active Shape Model(ASM) causes great attention in recent years, it can be used in many different application including medical imaging, face alignment etc. One of the characteristic of ASM is combining shape and intensity, with carefully training it can locate features in given image . But due to some assumption and approxiamation, sometimes the search falls into local minima. On the other hand, Support Vector Machine is a tool that many researcher use in machine learning or pattern recognition area. Its advantage is the speed of training and classificatio

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Lien, Ting-hsuan, and 連挺軒. "The Study of Model-based Face Tracking - Active Shape Model and Its Extension." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65331920396791463093.

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碩士<br>國立交通大學<br>應用數學系所<br>100<br>Image correspondence is a fundamental problem which discusses the relation of features between images of the same scene. Various approaches have been proposed to achieve this goal. In this thesis, we discuss the method of Active Shape Model, a straight forward approach for tracking the correspondences between images. The active shape model has been shown to be a practical and robust solution for matching features in 2D images. However, applying this technique to the matching of features in 3D point clouds still fail to produce convincible results. In this thesi

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Kirschner, Matthias. "The Probabilistic Active Shape Model: From Model Construction to Flexible Medical Image Segmentation." Phd thesis, 2013. https://tuprints.ulb.tu-darmstadt.de/3519/1/thesis.pdf.

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Automatic processing of three-dimensional image data acquired with computed tomography or magnetic resonance imaging plays an increasingly important role in medicine. For example, the automatic segmentation of anatomical structures in tomographic images allows to generate three-dimensional visualizations of a patient’s anatomy and thereby supports surgeons during planning of various kinds of surgeries. Because organs in medical images often exhibit a low contrast to adjacent structures, and because the image quality may be hampered by noise or other image acquisition artifacts, the develo

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Yasuda, Kotaro. "Development of an Active Shape Model Using the Discrete Cosine Transform." Thesis, 2014. http://spectrum.library.concordia.ca/978473/1/Yasuda_MASc_S2014.pdf.

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Facial recognition systems have been successfully applied in security, law-enforcement and human identification application, for automatically identifying a human in a digital image or a video frame. In a feature-based face recognition system using a set of features extracted from each of the prominent facial components, automatic and accurate localization of facial features is an essential pre-processing step. The active shape model (ASM) is a flexible shape model that was originally proposed to automatically locate a set of landmarks representing the facial features. Various improved version

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Sheng-Shau, Peng. "Generic Face Alignment using Active Shape Model with Support Vector Machine." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2407200820310100.

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Ching-HsuanChu and 朱靜璇. "2D-3D Shape and Motion Recovery using Inverse Compositional Active Appearance Model and Factorization." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/04795755675749474018.

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碩士<br>國立成功大學<br>資訊工程學系<br>103<br>This dissertation proposes a real-time system to quickly track human facial features and further build a 3D facial shape model with its 2D motion images. This system is composed of three major elements. Part (1) Detections of 2D facial features, Part (2) Error correction and tracking of 2D facial features, Part (3) Constructions of a 3D human facial model. Sequential video frames of a human face are inputs to Part (1). With a human face detection, the face can be located. After a process of positioning the face, by integrating two algorithms, Shape Optimized Se

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Lin, Yu-Hao, and 林宇浩. "Improved Active Shape Model for Facial Component Tracking using Curve Fitting and Dynamic Programming." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/brv445.

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碩士<br>國立東華大學<br>資訊工程學系<br>102<br>Facial Component Extraction (FCE) is a key problem in many Facial information processing (FIP) applications. The Active Shape Model (ASM) is a well-known and commonly-used technique for tackling the problem FCE. The ASM performs the FCE by fitting shapes through facial landmark searching and shape reconstruction. During landmark searching, the ASM considers no local smoothness of shape contours, consequently resulting in some absurdly located facial landmarks which in turn cause poor reconstruction of shapes. Furthermore, as the landmarks are searched by matchi

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Chen, Cong-Huai, and 陳琮淮. "Improved Facial Component Tracking and Extraction by Integrating Active Shape Model and Dynamic Time Warping." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/f9pfcr.

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碩士<br>國立東華大學<br>資訊工程學系<br>100<br>Facial component extraction (FCE) is a key problem in the facial information processing and analyzing (FIPA) because many facial applications require FCE as a preprocessing step. For extracting facial components, the active shape model (ASM) is an option commonly adopted by many researchers. As reported in many studies, the efficacy of ASM significantly depends on the initializing positions of facial landmarks and the finally searched facial landmarks. Badly initialized facial landmarks would not lead to accurate searching of facial landmarks and then cause ina

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Kirkpatrick, Kenton C. "Reinforcement Learning for Active Length Control and Hysteresis Characterization of Shape Memory Alloys." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-632.

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Shape Memory Alloy actuators can be used for morphing, or shape change, by controlling their temperature, which is effectively done by applying a voltage difference across their length. Control of these actuators requires determination of the relationship between voltage and strain so that an input-output map can be developed. In this research, a computer simulation uses a hyperbolic tangent curve to simulate the hysteresis behavior of a virtual Shape Memory Alloy wire in temperature-strain space, and uses a Reinforcement Learning algorithm called

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WANG, CHI-FAN, and 王啟凡. "Application of Active Shape Model to Lumbar Spine X-Ray Image Segmentation and Angle Feature Extraction." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/23201238309311165873.

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碩士<br>國立中正大學<br>資訊管理系醫療資訊管理研究所<br>104<br>In recent years, osteoporosis is one of the important and universality disease in many issues about aging society. Around sixty thousand people have vertebral fracture result from the osteoporosis in Taiwan every year, and percutaneous vertebroplasty can relieve pain from vertebral compression fractures. However, according to the past a few clinical researches, we find out that the patients who take percutaneous vertebroplasty treatment is able to suffer from subsequent fracture within one year, especially on the adjacent fracture. In the past, physicia

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Rishikesh, N. "Neural Architectures For Active Contour Modelling And For Pulse-Encoded Shape Recognition." Thesis, 1997. https://etd.iisc.ac.in/handle/2005/2386.

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An innate desire of many vision researchers IS to unravel the mystery of human visual perception Such an endeavor, even ~f it were not wholly successful, is expected to yield byproducts of considerable significance to industrial applications Based on the current understanding of the neurophysiological and computational processes in the human bran, it is believed that visual perception can be decomposed into distinct modules, of which feature / contour extraction and recognition / classification of the features corresponding to the objects play an important role. A remarkable characteristi

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Rishikesh, N. "Neural Architectures For Active Contour Modelling And For Pulse-Encoded Shape Recognition." Thesis, 1997. http://etd.iisc.ernet.in/handle/2005/2386.

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An innate desire of many vision researchers IS to unravel the mystery of human visual perception Such an endeavor, even ~f it were not wholly successful, is expected to yield byproducts of considerable significance to industrial applications Based on the current understanding of the neurophysiological and computational processes in the human bran, it is believed that visual perception can be decomposed into distinct modules, of which feature / contour extraction and recognition / classification of the features corresponding to the objects play an important role. A remarkable characteristic o

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Lo, Chen-chou, and 羅振洲. "Automatic Segmentation of Oral Magnetic Resonance Image Based on Shape Prior Active Contour Model and Fuzzy C-means Clustering." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/06511426360106810028.

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碩士<br>國立中央大學<br>電機工程學系<br>102<br>In this study, we applied image segmentation algorithm to automatically segment the tongue contour from the oral magnetic resonance images (MRI) in order to construct a three dimensional (3-D) tongue in real human size and to study the anatomical structures of tongue muscles and reconstruct these 2-D slice results into a 3-D tongue. Based on the suggestion of the previous study from our laboratory, we adopted shape prior and fuzzy clustering knowledge into level set algorithm for solving the problems of previous research. We enhanced the pixel contrast of the f

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CHANG, NAI-EN, and 張乃恩. "Combining Deep Learning and Active Shape Model for Automated Segmentation of the Left Ventricle of the Heart from Ultrasound Data." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/j9kcft.

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碩士<br>國立中正大學<br>資訊管理系研究所<br>105<br>We introduce an innovative application that combines Faster Region with Convolution Neural Network (Faster R-CNN) and Active Shape Model (ASM) for automated segmentation of the left ventricle of the heart from ultrasound data. This combination is relevant for segmentation problems, where the left ventricle presents large shape and appearance variations, but we can use only small annotated training set to adapt different heart phase and case by deep learning. Compare to other tradition segmentation methods, ASM is a model-based segmentation methodology which i

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Chang, Yu-Bing. "Enhanced Computerized Surgical Planning System in Craniomaxillofacial Surgery." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9305.

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In the field of craniomaxillofacial (CMF) surgery, surgical planning is an important and necessary procedure due to the complex nature of the craniofacial skeleton. Computed tomography (CT) has brought about a revolution in virtual diagnosis, surgical planning and simulation, and evaluation of treatment outcomes. It provides high-quality 3D image and model of skull for Computer-aided surgical planning system (CSPS). During the planning process, one of the essential steps is to reestablish the dental occlusion. In the first project, a new approach is presented to automatically and efficiently r

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Drory, Ami. "Computer Vision and Machine Learning for Biomechanics Applications : Human Detection, Pose and Shape Estimation and Tracking in Unconstrained Environment From Uncalibrated Images, Videos and Depth." Phd thesis, 2017. http://hdl.handle.net/1885/129415.

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Motivation. In Biomechanics, musculoskeletal models yield information that cannot be non-invasively obtained by direct measurement based on skeletal kinematics. Unsatisfactorily, obtaining accurate skeletal kinematics is limited to either user manual labelling or marker-based motion capture systems (MoCaps) that are limited by expansive infrastructure, environmental conditions, obtrusive markers causing movement impediment and occlusion errors. Moreover, they cannot yield surface geometry that is critical for many biomechanical applications. To advance

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