Dr. David F. Wiley Profile

Dr. David F. Wiley

at Univ of California Davis

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Publications (7)

Proceedings Article | 25 February 2008 Paper

Improved representation of retinal data acquired with volumetric Fd-OCT: co-registration, visualization, and reconstruction of a large field of view

Robert Zawadzki, Alfred Fuller, Stacey Choi, David Wiley, Bernd Hamann, John Werner

Proceedings Volume 6844, 68440C (2008) https://doi.org/10.1117/12.764070

KEYWORDS: Optical coherence tomography, Visualization, Data acquisition, Eye, Retina, Imaging systems, Visual analytics, Retinal scanning, 3D acquisition, Head

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Advances in Fourier-domain optical coherence tomography (Fd-OCT) permit visualization of three-dimensional morphology of in-vivo retinal structures in a way that promises to revolutionize clinical and experimental imaging of the retina. The relevance of these advances will be further increased by the recent introduction of several commercial Fd-OCT instruments that can be used in clinical practice. However, due to some inherent limitations of current Fd-OCT technology (e.g., lack of spectroscopic information, inability to measure fluorescent signals), it is important to co-register Fd-OCT data with images obtained by other clinical imaging modalities such as fundus cameras and fluorescence angiography to create a more complete interpretation and representation of structures imaged. The co-registration between different imaging platforms becomes even more important if small retinal changes are monitored for early detection and treatment. Despite advances in volume acquisition speed with FD-OCT, eye/head motion artifacts can be still seen on acquired data. Additionally high-sampling density, large field-of-view (FOV) Fd-OCT volumes may also be needed for comparison with conventional imaging. In standard Fd-OCT systems, higher sampling density and larger imaging FOV (with constant sampling densities) lead to longer acquisition time which further increases eye/head motion artifacts. To overcome those problems, we tested 3D stitching of multiple, smaller retinal volumes which can be acquired in a less time (reduction of motion artifacts) and/or when stitched create a larger FOV representation of the retina. Custom visualization software that makes possible manual co-registration and simultaneous visualization of volumetric Fd-OCT data sets is described. Volumetric visualizations of healthy retinas with corresponding fundus pictures are presented followed by examples of retinal volumes of high sampling density that are created from multiple "standard" Fd-OCT volumes.

SPIE Journal Paper | 1 July 2007 Open Access

Adaptation of a support vector machine algorithm for segmentation and visualization of retinal structures in volumetric optical coherence tomography data sets

Robert Zawadzki, Alfred Fuller, David Wiley, Bernd Hamann, Stacey Choi, John Werner

JBO, Vol. 12, Issue 04, 041206, (July 2007) https://doi.org/10.1117/12.10.1117/1.2772658

KEYWORDS: Image segmentation, Visualization, Optical coherence tomography, Data acquisition, Visual analytics, Eye, Retina, Volume visualization, Human-machine interfaces, 3D acquisition

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Proceedings Article | 26 March 2007 Paper

Correction of motion artifacts and scanning beam distortions in 3D ophthalmic optical coherence tomography imaging

Robert Zawadzki, Alfred Fuller, Stacey Choi, David Wiley, Bernd Hamann, John Werner

Proceedings Volume 6426, 642607 (2007) https://doi.org/10.1117/12.701524

KEYWORDS: Optical coherence tomography, Eye, Head, Scanners, Visualization, Data acquisition, Retina, 3D image processing, Coherence imaging, 3D metrology

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Proceedings Article | 5 March 2007 Paper

Development of quantitative diagnostic observables for age-related macular degeneration using Spectral Domain OCT

Bradley Bower, Stephanie Chiu, Emily Davies, Anjul Davis, Robert Zawadzki, Alfred Fuller, David Wiley, Joseph Izatt, Cynthia Toth

Proceedings Volume 6426, 64260W (2007) https://doi.org/10.1117/12.704689

KEYWORDS: Optical coherence tomography, Data acquisition, Diagnostics, Volume rendering, 3D image processing, Image segmentation, Retinal scanning, 3D acquisition, Data centers, Signal detection

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Proceedings Article | 7 March 2006 Paper

3D OCT imaging in clinical settings: toward quantitative measurements of retinal structures

Robert Zawadzki, Alfred Fuller, Mingtao Zhao, David Wiley, Stacey Choi, Bradley Bower, Bernd Hamann, Joseph Izatt, John Werner

Proceedings Volume 6138, 613803 (2006) https://doi.org/10.1117/12.647567

KEYWORDS: Image segmentation, Optical coherence tomography, 3D image processing, Eye, 3D acquisition, Visualization, Retina, 3D metrology, Data acquisition, 3D visualizations

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Proceedings Article | 16 January 2006 Paper

Automatic feature-based surface mapping for brain cortices

Fabien Vivodtzev, David Wiley, Lars Linsen, James Jones, Nina Amenta, Bernd Hamann, Kenneth Joy

Proceedings Volume 6060, 60600V (2006) https://doi.org/10.1117/12.644541

KEYWORDS: Brain, Brain mapping, Image segmentation, Clouds, Associative arrays, Principal component analysis, Neuroimaging, Visualization, Visual analytics, Data analysis

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Proceedings Article | 12 March 2002 Paper

Using quadratic simplicial elements for hierarchical approximation and visualization

David Wiley, Henry Childs, Bernd Hamann, Kenneth Joy, Nelson Max

Proceedings Volume 4665, (2002) https://doi.org/10.1117/12.458802

KEYWORDS: Visualization, Linear elements, Visual analytics, Data analysis, Information operations, Tolerancing

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Showing 5 of 7 publications

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