Dr. Robert Velthuizen Profile

Dr. Robert Velthuizen

HPC Research & Development Manager at Unilever Research & Development

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Publications (10)

Proceedings Article | 19 February 2009 Paper

Segmentation of hyper-pigmented spots in human skin using automated cluster analysis

Kirk Gossage, Jesse Weissman, Robert Velthuizen

Proceedings Volume 7161, 71610A (2009) https://doi.org/10.1117/12.809775

KEYWORDS: Image segmentation, Skin, RGB color model, Image classification, Chromophores, Image processing algorithms and systems, Multispectral imaging, Imaging devices, Collagen, Blood

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Proceedings Article | 1 May 2002 Paper

Quantification of local optical properties of tissue

Alois Popp, Robert Velthuizen, Peter Kaplan, Arkady Pertsov, David Weitz

Proceedings Volume 4613, (2002) https://doi.org/10.1117/12.465240

KEYWORDS: Tissue optics, Tissues, Monte Carlo methods, Optical properties, Natural surfaces, Absorption, Sensors, Scattering, Laser tissue interaction, Diffusion

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Proceedings Article | 6 June 2000 Paper

Mammographic mass classification: initial results

Robert Velthuizen, Deepak Gangadharan

Proceedings Volume 3979, (2000) https://doi.org/10.1117/12.387703

KEYWORDS: Image segmentation, Mammography, Databases, Wavelets, Computer aided diagnosis and therapy, Feature extraction, Breast cancer, Breast, Cancer, Fuzzy logic

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Proceedings Article | 26 June 1998 Paper

Digitized mammogram standardization for display and CAD

Robert Velthuizen, Laurence Clarke

Proceedings Volume 3335, (1998) https://doi.org/10.1117/12.312491

KEYWORDS: Mammography, Computer aided design, Computer aided diagnosis and therapy, Genetic algorithms, Databases, Digital mammography, Calibration, Image registration, Absorbance, Radiology

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Proceedings Article | 24 June 1998 Paper

Automatic brain tumor segmentation

Matthew Clark, Lawrence Hall, Dmitry Goldgof, Robert Velthuizen, F. Murtaugh, Martin Silbiger

Proceedings Volume 3338, (1998) https://doi.org/10.1117/12.310932

KEYWORDS: Tumors, Image segmentation, Brain, Tissues, Photomasks, Neuroimaging, Magnetism, Magnetic resonance imaging, Pathology, Gadolinium

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Proceedings Article | 16 April 1996 Paper

Novel approach to feature extraction for MRI segmentation

Robert Velthuizen, Lawrence Hall, Laurence Clarke

Proceedings Volume 2710, (1996) https://doi.org/10.1117/12.237926

KEYWORDS: Tumors, Feature extraction, Image segmentation, Genetic algorithms, Magnetic resonance imaging, Brain, Feature selection, Associative arrays, Iris recognition, Error analysis

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Proceedings Article | 29 July 1993 Paper

Unsupervised fuzzy segmentation of 3D magnetic resonance brain images

Robert Velthuizen, Lawrence Hall, Laurence Clarke, Amine Bensaid, J. Arrington, Martin Silbiger

Proceedings Volume 1905, (1993) https://doi.org/10.1117/12.148675

KEYWORDS: Image segmentation, Tissues, Tumors, Brain, Fuzzy logic, 3D image processing, Magnetic resonance imaging, Neuroimaging, Magnetism, Pattern recognition

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Proceedings Article | 29 July 1993 Paper

Tree-structured nonlinear filter and wavelet transform for microcalcification segmentation in mammography

Wei Qian, Laurence Clarke, Maria Kallergi, Huai Li, Robert Velthuizen, Robert Clark, Martin Silbiger

Proceedings Volume 1905, (1993) https://doi.org/10.1117/12.148665

KEYWORDS: Digital filtering, Image filtering, Nonlinear filtering, Wavelets, Image enhancement, Wavelet transforms, Feature extraction, Mammography, Image processing, Electronic filtering

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Proceedings Article | 1 July 1992 Paper

Partially supervised fuzzy c-means algorithm for segmentation of MR images

Amine Bensaid, James Bezdek, Lawrence Hall, Robert Velthuizen, Laurence Clarke

Proceedings Volume 1710, (1992) https://doi.org/10.1117/12.140120

KEYWORDS: Image segmentation, Tissues, Magnetic resonance imaging, Tumors, Detection and tracking algorithms, Image classification, Fuzzy logic, Image processing algorithms and systems, Data centers, Artificial neural networks

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Proceedings Article | 1 June 1992 Paper

Comparison of supervised pattern recognition techniques and unsupervised methods for MRI segmentation

Laurence Clarke, Robert Velthuizen, Lawrence Hall, James Bezdek, Amine Bensaid, Martin Silbiger

Proceedings Volume 1652, (1992) https://doi.org/10.1117/12.59477

KEYWORDS: Image segmentation, Tissues, Pattern recognition, Magnetic resonance imaging, Medical imaging, Fuzzy logic, Image processing, 3D displays, 3D image processing, Pathology

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Showing 5 of 10 publications

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