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 37 for “"volumetric data"”.
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Interactive Visualization of Large Higher-Order Tetrahedral Data
… and efficiently visualize large higher-order volumetric data sets with non-conforming meshes and discontinuous solution fields, which is an uncovered field so far. Our algorithms include accurate pixel-exact surface rendering, interactive point-based volume visualization and efficient …
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Left ventricle motion and shape modeling, analysis, and visualization from image sequences
… second type of image sequence is the dynamic CT volumetric data obtained from the unique DSR scanner. The left ventricle chambers extracted from the volumetric data are used to estimate the global motion and global deformations of the left ventricle. The estimated results of left ventricle shape, …
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Interframe estimation and video coding
… multiresolution video coding and coding of MRI volumetric data.
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Data-driven 3D shape modeling
… is still an open issue. There are too much raw data around, but there is no uniform or standard way to translate them for computers. My work is an attempt to build a bridge from real world to virtual world. We proposed several algorithms to process three major types of raw data, including …
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REVO: A flexible, volumetric approach to mesh construction
… by an artist. First, the Revo method generates a volumetric representation of each input mesh or primitive. To do so, for each input mesh, it imposes a 3D grid called a volumetric grid on the portion of the 3D world that contains the mesh. Revo may apply some transformations to an input mesh to …
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Annotation of Vascular Plant Structures using Haptic Assistance
… using X-ray micro-CT and then annotate the volumetric data digitally. However, this process is challenging due to the complex arrangement of vascular bundles and lack of contrast from other nearby anatomic structures. To address these problems, we developed a system to annotate the vascular …
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CINAPACT-Splines: A Family of Infnite Smooth, Accurate and Compactly Supported Splines
… properties of CINAPACT-splines in reconstructing volumetric data sampled on regular grids. We show that CINAPACT-splines provide similar reconstruction quality and cost compared to some well-established filters, while being infinitely smooth. We further explore the advantages of our filter by …
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Phase equilibria and volumetric properties for the system NaCl-CaCl₂-H₂O
… are in excellent agreement with published data along the NaCl-H₂O binary but show large discrepancies when compared to previous determinations of the ice liquidus along the CaCl₂-H₂O binary and in the NaCl-CaCl₂-H₂O ternary. At moderate to high salinities, isotherms cross the ice sub-field …
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A 3D Deep Learning Architecture for Denoising Low-Dose CT Scans
… the inter-slice correlation present in volumetric CT data, 3D-DDnet surpasses existing denoising benchmarks. It incorporates distributed data parallel (DDP) and transfer learning techniques to significantly accelerate the training process. The DDP approach is particularly tailored for …
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Ensemble of classifiers based data fusion of EEG and MRI for diagnosis of neurodegenerative disorders
… promise in automated diagnosis - in addition to volumetric magnetic resonance imaging (MRI), are relatively low cost and readily available tools that can be used as an automated diagnosis tool.</p> <p>16-electrode EEG data were collected from 175 subjects afflicted with Alzheimer's disease, …
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Experimental determination of the volumetric properties for the system CO₂-CH₄-N₂ at 100-1000 bars and 50-300°C
… of the earth; therefore, thermochemical data on these gas species and their mixtures find application in geochemical modeling of crustal fluids in a wide variety of geologic environments. However, volumetric data for gaseous mixtures are scarce, particularly at high pressures and …
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Interferometric Synthetic Aperture Microscopy (ISAM) Reconstruction and Characterization in a High Numerical Aperture System
… invariant resolution within the whole 3D data set, including regions that are outside of the focal region. Both OCM and ISAM have many potential research and clinical applications. By combining OCM and ISAM, it is possible to visualize an entire 3D volumetric data set with the high …
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High speed handheld instrument for ophthalmic optical coherence tomography
… allows screening of pathology with a single volumetric data set spanning the areas of interest on the retina.
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High speed swept source optical coherence tomography handheld instrument at 1310nm for point-of-care imaging
… allow for screening of pathology with a single volumetric data set spanning the areas of interest on the patient. The compact, easy-to-use form factor could enable the adoption of SS-OCT in settings like primary care clinics or the surgical theater where space is limited. Emergent applications …
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Printing the invisible : bridging the gap between data and matter through voxel-based 3D printing
… to the representation and communication of data in ways that are at once efficient and effective. Numerous data types have established unique formats of representation. In the context of three-dimensional (3D) data sets, such information is often presented as a 3D rendering, a video or an …
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Perceptual depth cues in support of medical data visualisation
… provide clinically useful visualisations of the data produced by an X-ray /CT scanner. Specifically, it examines the use of perceptual depth cues (PDCs) and perceptual depth cue theory to create effective visualisations. Two visualisation systems are explored: one to display X-ray data and the …
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Grasping information and collaborating through shape displays
… for computer-aided design, urban planning, and volumetric data exploration allow users to manipulate data at different scales and modalities. To support remote collaboration, shared telepresence workspaces capture and remotely render the physical shapes of people and objects. Users can modify …
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Effects of Prescribed Burning on Black-Capped Vireo Habitat, Territory Establishment, and Production
… surveyed for Black-capped Vireo territories and volumetric data on motte size were collected on actual and prospective nesting sites. South Rock and North Doe were burned in February 1994; the result was a mean motte size reduction of 34.9% for South Rock and 7.3% for North Doe. The number of …
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3D Reconstruction of Tubular Structures Using MRI Projection Images
… in digital form, techniques for acquiring volumetric data evolved. 3D reconstruction is mostly performed using multislice stack images. The objective of this dissertation is to introduce a simple magnetic resonance technique for imaging tubular structures, such as blood vessels and …
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Incremental volume rendering using hierarchical compression
… on the thesis that efficient volume rendering of datasets, contained on the Internet, can be achieved on average personal workstations. We present a new algorithm here for efficient incremental rendering of volumetric datasets. The primary goal of this algorithm is to give average workstations the …
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