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 “"Appearance Model"”.
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An Integrated Framework Enhanced With Appearance Model for Facial Motion Modeling, Analysis and Synthesis
… intelligent video surveillance. Computational models for face analysis and synthesis are useful for both basic research and practical applications. In this dissertation, we present a unified framework for 3D face motion modeling, analysis and synthesis. We first derive a compact geometric …
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Development of a statistical shape and appearance model of the skull from a South African population
Statistical shape models (SSMs) and statistical appearance models (SAMs) have been applied in medical analysis such as in surgical planning, finite element analysis, model-based segmentation, and in the fields of anthropometry and forensics. Similar applications can make use of SSMs and SAMs of the …
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Object Tracking: Appearance Modeling And Feature Learning
… where the major challenges come from handling appearance variation during tracking caused by changing scale, pose, rotation, illumination and occlusion.</p> <p>In this dissertation, we address these challenges by introducing several novel tracking techniques. First, we developed a multiple …
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An investigation into viewpoint invariant pedestrian recognition for surveillance systems
This is a study of viewpoint invariant appearance models for pedestrian recognition. The study investigates basic models, color histograms and region based histograms, to gain intuition about the appearance models as well as create new baseline results for evaluating future appearance models. This …
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Automatic age progression and estimation from faces
… the existing algorithms. Initially using active appearance models (AAM), facial features are extracted and mapped to people’s ages, afterward a formula is derived which allows the convenient generation of age progressed images irrespective of whether the intended age exists in the training …
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An interactive talking head
… is generated by reference to a probabilistic model of interactive beha viour within the visual domain - such models are learnt automatically from typical interactions. We extend this work in to a combined visual and auditory domain and employ a state-of-the-art facial appearance model. The …
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Modelling grey-level intensities for smart phones to view medical images
This research concerns with the modelling of grey level intensities for mobile phones in order to view medical images in greyscale using different mobile phones. While medical image format of DICOM employs a Greyscale Standard Display Function (GSDF) that describes the relationship between …
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Light field appearance manifolds
Statistical shape and texture appearance models are powerful image representations, but previously had been restricted to 2D or 3D shapes with smooth surfaces and lambertian reflectance. In this thesis we present a novel 4D appearance model using image-based rendering techniques, which can …
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Motion pattern analysis for far-field vehicle surveillance
… to learn the environment's topology. First, an appearance model is constructed by the combination of normalized color and overall model size to measure the appearance similarity of moving objects across non-overlapping views. Then based on the similarity in appearance, weighted votes are used to …
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Generative modeling of dynamic visual scenes
Modeling visual scenes is one of the fundamental tasks of computer vision. Whereas tremendous efforts have been devoted to video analysis in past decades, most prior work focuses on specific tasks, leading to dedicated methods to solve them. This PhD thesis instead aims to derive a probabilistic …
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Modelling of colour appearance of textured colours and smartphones using CIECAM02
… colour committee recommended a colour appearance model, CIECAM02 in 2002, to help to predict colours under various viewing conditions from a colour appearance point of view, which has the accuracy of an averaged observer. In this research, an attempt is made to extend this model to …
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Leveraging Modelling and Machine Learning for the Analysis of Curvilinear Structures in Medical Images
… estimation algorithm. The former combines an appearance model, based on a Scale and Curvature Invariant Ridge Detector (SCIRD), with a context model, including multi-range learned context filters. The latter is based on a novel tortuosity estimation paradigm in which discriminative, …
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Online Structured Learning for Real-Time Computer Vision Gaming Applications
… we incorporate online learning to provide an appearance model which is able to adapt to the target object and its surrounding background during tracking. However, our approach moves beyond the standard framework of tracking using binary classication and instead integrates tracking and learning …
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Layout-aware mixture models for patch-based image representation and analysis
"Image and video representation and modeling is an important topic in computer vision and image processing. An image model provides an abstraction of the large amount of data contained in an image and enables the systematic development of algorithms for accomplishing a particular image-related …
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Tibial-fibular morphology: variation, sexual dimorphism, and mechanical implications
… sexes. As we work towards improving predictive models and developing effective screening tools for stress fracture risk, these findings provide insights into key features of bone geometry and density that will need to be accurately characterised. Landmark- and anthropometric-based predictions of …
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Vehicle-pedestrian interaction using naturalistic driving video through tractography of relative positions and pedestrian pose estimation
… pose of pedestrians. Adaptive structural local appearance model and particle filter methods have been implemented and modified to track the pedestrians more accurately. We have developed new algorithm to compute Focus of Expansion (FoE) automatically. Automatically detected FoE height data have …
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Visual object tracking
… cues are beneficial for building a stable appearance representation for the target, which enables the tracker to be robust against occlusion and drifting. In this regard, we attempt to develop effective methods that take advantage of the spatial and temporal context to improve the tracking …
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Real-time Monocular Vision-based Tracking For Interactive Augmented Reality
… angle, light intensity, or light color, using models of the physical properties of reflection. Our experiments show how well these derived quantities actually remained constant with real materials, real lights, and real cameras, while still retaining the ability to discriminate between …
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The utility of synthetic images for face modelling and its applications
In recent years, deformable face model based approaches have been a very active area of research. The Active Appearance Model (AAM) has been by far the most popular approach for generating the face models and has been used in several facial image analysis based applications. This thesis …
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The utility of synthetic images for face modelling and its applications
In recent years, deformable face model based approaches have been a very active area of research. The Active Appearance Model (AAM) has been by far the most popular approach for generating the face models and has been used in several facial image analysis based applications. This thesis …
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