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 10 of 10 for “"Active Shape Model"”.
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Active shape model segmentation of Brain structures in MR images of subjects with fetal alcohol spectrum disorder
… through an assessment of volume and shape of sub-cortical structures on high-resolution MR images.
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Locating facial features with active shape models
… human faces. The dissertation starts with the Active Shape Model of Cootes et al. [19] and extends it with the following techniques: 1. Selectively using two-instead of one-dimensional landmark profiles. 2. Stacking two Active Shape Models in series. 3. Extending the set of landmarks. 4. …
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Multiview active shape models with SIFT descriptors
… landmarks in images of human faces. A modified Active Shape Model (ASM [21]) is introduced that uses a form of SIFT descriptors [68]. Multivariate Adaptive Regression Splines (MARS [40]) are used to efficiently match descriptors around landmarks. This modified ASM is fast and performs well on …
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Computer-aided diagnosis of tuberculosis in paediatric chest X-rays using local textural analysis
… using a semi-automatic implementation of the active shape model algorithm. Two approaches to subdividing the lung fields into regions of interest are compared. The first divides each lung field into 21 overlapping regions of varying sizes, resulting in a total of 42 regions per image; this …
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Visual Face Tracking and Its Applications
… to the camera in high resolution. We explore Active Shape Model (ASM) techniques for localizing the 2D facial features in a CONDENSATION framework. The 3D face location and orientation can be inferred using an optical flow based 3D model face tracker. In the MRVA scenario, the faces are …
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Vollautomatische Segmentierung von lateralen Wirbelsäulenröntgenogrammen : Auswertung und Analyse
This study introduces a knowledge-based shape model for fully automatic segmentation of structures on radiographs, here vertebrae of the lumbar spine. The goals of this study were to examine whether the method is exact enough to determine medical structures on radiographs and to decide which …
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Research on 3D reconstruction based on 2D face images.
… However, this approach requires manual modelling, which is costly in terms of time and money, and expensive in terms of equipment, making it unpopular in practical applications. Compared to 3D face construction with multiple images, the single-image approach reduces computational time …
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Nicht-intrusive Erkennung isolierter Gesten und Gebärden
… of this objective. The hands can change their shapes, positions and orientations in the recorded image sequence in a non-continuous way; they offer no dependable cues for unique identification and can be confused easily due to similarity. Additionally, the hands can overlap each other and the …
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Segmentation and Fracture Detection in CT Images for Traumatic Pelvic Injuries
… algorithm then uses a template-based best shape matching method that provides an entirely automated segmentation process. This is followed by the proposed Registered Active Shape Model (RASM) algorithm that extracts pelvic bone tissues using more robust training models than the Standard ASM …
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Segmentierung und Analyse anatomischer Strukturen mit wissensbasierten Modellen
… of anatomical structures with knowledge based models. The rapid development of medical imaging modalities has lead to an increasing amount of image data, to be evaluated by the physicians. Thus it is desirable, especially in three dimensional imaging, to support the diagnostic process with …