Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Morphable"”.
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Animal Reconstruction with 3D Morphable Models
… thesis proposes a solution based on using 3D morphable models (3DMMs) as a useful intermediary 3D animal representation, enabling identification of adverse events and reducing the task-specific data requirements for downstream behaviour/welfare prediction tasks. A 3DMM is a specially designed …
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Face Recognition and Expression Recognition using Morphable Models
<P>IN THIS THESIS, WE PROPOSE A MORPHABLE MODEL CONSTRUCTION FRAMEWORK THAT MINIMIZES BOTH THE GLOBAL DISTANCE BETWEEN SURFACES (GLOBAL ENERGY) AS WELL AS THE DISTANCE BETWEEN CORRESPONDING FACE FEATURES ON DIFFERENT FACES (LOCAL ENERGY). LOCALIZED FACE FEATURE POINTS SUCH AS EYE CENTERS, NOSE-TIP, …
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Component-based face recognition with 3D morphable models
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2003.
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3D Morphable Models: Data Pre-Processing, Statistical Analysis and Fitting
… a 3D linear statistical model (known as a 3D morphable model) of an object class (which could be faces, bodies, cars, etc) for robust shape recovery. Our aim is to use this recovered information for the purposes of potentially useful applications like recognition and synthesis. With a 3D …
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Multidimensional morphable models : a framework for representing and matching object classes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Modelling non-linearity in 3D shapes: A comparative study of Gaussian process morphable models and variational autoencoders for 3D shape data
… techniques: linear Gaussian process morphable models (GPMM) and non-linear variational autoencoders (VAE). Their model performance is measured using generalisation, specificity and computational efficiency in training. The research showed that, given limited computational power, GPMMs …
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3D reconstruction of human body via machine learning
… (GANs). The 3D facial reconstruction used the morphable facial model by principal component analysis (PCA) and the LS3D-W database. The 3D garments are reconstructed by the multi-garment net (MGN) to generate UV-mapping and remapped into the human model with motion transferred by archive of …
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Towards trainable man-machine interfaces : combining top-down constraints with bottom-up learning in facial analysis
… facial analysis. We propose the use of a linear morphable model (LMM) for representing top-down structure and use it to model various facial variations such as mouth shapes and expression, the pose of faces and visual speech (visemes). We apply a supervised learning method based on support vector …
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An accurate and efficient method for reconstruction of 3D faces from stereo images
… based on 3D keypoints, and then use a linear morphable model to efficiently match the detailed shape and texture. The features used for the fitting processes are selected with the guidance of the quantitative evaluation of a state-of-the-art reconstruction algorithm. In our new direct …
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Trainable videorealistic speech animation
… work are * a variant of the multidimensional morphable model (MMM) [4] [26] [25] to synthesize new, previously unseen mouth configurations from a small set of mouth image prototypes, * a trajectory synthesis technique based on regularization, which is automatically trained from the recorded …
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Comparing visual features for morphing based recognition
… correspondences between pairs of images. Various morphable models are created by small subsets of these correspondences using thin-plate spline. Given these morphs, a simple algorithm, least median of squares (LMEDS), is used to find the best morph. A scoring metric, using both LMEDS and distance …
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Design and analysis of active fluid-and-cellular solid composites for controllable stiffness robotic elements
… both rigid, load-bearing components as well as morphable, compliant ones. While the vast range of fluid-foam combinations for such an application have yet to be explored, the work presented here focuses on a specific composite: open-cell polyurethane foam impregnated with wax. This type of …
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Gaze Estimation with Graphics
… rendering. Second, I present a new morphable model of the eye region. I show how this model can be used to generate large amounts of varied data for learning-by-synthesis. Third, I present a new method for gaze estimation: analysis-by-synthesis. I demonstrate how …
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Non-Verbal Behaviour of a VR Agent Playing a Board Game
… for complex expressions by incorporating a morphable 3D character model. To collect data, volunteers were recorded while they were playing a board-game. The recordings were then annotated in regards to behaviour type such as eye gaze and actions such as hand movement in relation to the …
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Geometrically and Perceptually Accurate Facial Mesh Synthesis and Personalised Blendshapes Generation using Graph Neural Networks
… A platform is built to compare various deep 3D Morphable Models coupled with different 3D mesh representations and to evaluate them with several distance and perceptual metrics. Using the platform, improvements upon existing state-of-the-art reconstruction results are demonstrated and strengths …
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Articulated Statistical Shape Modelling of the Shoulder Joint
… was performed using a Gaussian process morphable model fitting approach. In order to register two objects separately, while keeping their shape and kinematics relationship intact, one of the objects (scapula) was fixed leaving the other (humerus) to be mobile. All the pairs of registered …
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Hierarchical design of morphing shape-memory polymer structures via topology optimization
… basic twisting and bending structures along a morphable kinematic chain are generated by using a genetic algorithm with a predetermined ideal knot chosen as the target shape. The optimal sequence is then 3D printed and subjected to the thermo-mechanical programming cycle to compare the …
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Reconstruction of three-dimensional facial geometric features related to fetal alcohol syndrome using adult surrogates
… from a single 2D image of the face using a 3D morphable model (3DMM) were explored in this research study. The research project was accomplished in several steps. 3D facial data were obtained from the publicly available BU-3DFE database, developed by the State University of New York. The 3D …
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Three-Dimensional Body Volume Measurement From Two-Dimensional Images: Towards A Smartphone Application
… images, using a full body 3D Gaussian process morphable model (GPMM). Separate GPMMs were trained to learn the shape of female and male human bodies. Gaussian process regression of the three-dimensional (3D) GPMM models onto two-dimensional (2D) images is performed. Corresponding landmarks on …
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Human identification using ear biometrics: A complete pipeline from detection to recognition
… Additionally, using 3D point clouds and the 3D Morphable Ear Model (3DMEM) model allows for greater accuracy and robustness in identification, making it harder for hackers to bypass the system. The proposed pipeline can be integrated into various security systems, such as access controls, online …
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