Dr. Hewei Gao Profile

Dr. Hewei Gao

Postdoctoral Fellow at GE Research

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 19 March 2014 Paper

Rotating and semi-stationary multi-beamline architecture study for cardiac CT imaging

Jiao Wang, Paul Fitzgerald, Hewei Gao, Yannan Jin, Ge Wang, Bruno De Man

Proceedings Volume 9033, 90335Q (2014) https://doi.org/10.1117/12.2043680

KEYWORDS: Sensors, Radon, Temporal resolution, Computed tomography, Data acquisition, Imaging systems, Reconstruction algorithms, Heart, Cardiac imaging, Image quality

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Proceedings Article | 19 March 2014 Paper

Physics-based modeling of X-ray CT measurements with energy-integrating detectors

Yong Long, Hewei Gao, Mingye Wu, Jed Pack, Hao Xu, Kun Tao, Paul Fitzgerald, Bruno De Man

Proceedings Volume 9033, 90334S (2014) https://doi.org/10.1117/12.2043144

KEYWORDS: X-rays, Sensors, Photons, X-ray detectors, Monte Carlo methods, X-ray optics, Scintillators, Photodiodes, Systems modeling, X-ray computed tomography

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Proceedings Article | 9 March 2012 Paper

Equal-dose spectral optimization of spectral CT mono-energy photon counting

J. Eric Tkaczyk, Vladimir Lobastov, Daniel Harrison, Pete Edic, Hewei Gao, Daniel Rubin

Proceedings Volume 8313, 831331 (2012) https://doi.org/10.1117/12.912113

KEYWORDS: Photon counting, Sensors, Iodine, X-ray computed tomography, X-rays, Monte Carlo methods, Calcium, Composites, Computed tomography, Physics

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Proceedings Article | 16 March 2011 Paper

Evaluation of an erbium modulator in x-ray scatter correction using primary modulation

Hewei Gao, Tianye Niu, Lei Zhu, Rebecca Fahrig

Proceedings Volume 7961, 796122 (2011) https://doi.org/10.1117/12.878609

KEYWORDS: Modulators, Erbium, Copper, Modulation, X-rays, Error analysis, X-ray computed tomography, Computed tomography, Sensors, Linear filtering

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Proceedings Article | 22 March 2010 Paper

Optimization of system parameters for modulator design in x-ray scatter correction using primary modulation

Hewei Gao, Lei Zhu, Rebecca Fahrig

Proceedings Volume 7622, 76222A (2010) https://doi.org/10.1117/12.843984

KEYWORDS: Modulators, Modulation, X-rays, Copper, Sensors, Aluminum, Error analysis, X-ray sources, X-ray detectors, X-ray imaging

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Proceedings Article | 13 March 2009 Paper

Scatter correction for x-ray conebeam CT using one-dimensional primary modulation

Lei Zhu, Hewei Gao, N. Robert Bennett, Lei Xing, Rebecca Fahrig

Proceedings Volume 7258, 725820 (2009) https://doi.org/10.1117/12.813849

KEYWORDS: Modulation, Modulators, Reconstruction algorithms, X-rays, X-ray computed tomography, X-ray imaging, X-ray sources, Signal attenuation, Sensors, Monte Carlo methods

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SPIE Journal Paper | 1 July 2007

Volumetric imaging from a multisegment straight-line trajectory and a practical reconstruction algorithm

Hewei Gao, Li Zhang, Yuxiang Xing, Zhiqiang Chen, Jian Zhang, Jianping Cheng

OE, Vol. 46, Issue 07, 077004, (July 2007) https://doi.org/10.1117/12.10.1117/1.2756823

KEYWORDS: Reconstruction algorithms, Sensors, Image segmentation, Optical engineering, Inspection, X-ray computed tomography, Scanners, Computed tomography, Imaging systems, Detection and tracking algorithms

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SPIE Journal Paper | 1 May 2007

Direct filtered-backprojection-type reconstruction from a straight-line trajectory

Hewei Gao, Li Zhang, Zhiqiang Chen, Yuxiang Xing, Jianping Cheng, Zhihua Qi

OE, Vol. 46, Issue 05, 057003, (May 2007) https://doi.org/10.1117/12.10.1117/1.2739624

KEYWORDS: Sensors, Reconstruction algorithms, Detection and tracking algorithms, Optical filters, Optical engineering, Computed tomography, Spatial resolution, Image quality, Inspection, Image filtering

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Proceedings Article | 20 March 2006 Paper

An improved denoising algorithm based on multi-scale dyadic wavelet transform

Zhihua Qi, Li Zhang, Yuxiang Xing, Hewei Gao

Proceedings Volume 6144, 61446G (2006) https://doi.org/10.1117/12.653232

KEYWORDS: Wavelets, Denoising, X-ray computed tomography, Computed tomography, Reconstruction algorithms, Wavelet transforms, Electronic filtering, Image filtering, Signal to noise ratio, Linear filtering

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Proceedings Article | 17 February 2006 Paper

Variational segmentation of x-ray image with overlapped objects

Guoqiang Yu, Li Zhang, Jin Zhang, Yuxiang Xing, Hewei Gao

Proceedings Volume 6064, 60640W (2006) https://doi.org/10.1117/12.650449

KEYWORDS: Image segmentation, X-rays, X-ray imaging, Visual process modeling, Image processing, Image processing algorithms and systems, Image filtering, Machine vision, Computer vision technology, Chemical species

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Proceedings Article | 2 February 2006 Paper

Cupping artifacts analysis and correction for a FPD-based cone-beam CT

Li Zhang, Hewei Gao, Shuanglei Li, Zhiqiang Chen, Yuxiang Xing

Proceedings Volume 6065, 60650Z (2006) https://doi.org/10.1117/12.650503

KEYWORDS: X-rays, Sensors, Convolution, Iron, Lead, X-ray detectors, Image quality, X-ray computed tomography, CT reconstruction, X-ray sources

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Proceedings Article | 16 January 2006 Paper

Robust feature extraction for character recognition based on binary images

Lijun Wang, Li Zhang, Yuxiang Xing, Zhiming Wang, Hewei Gao

Proceedings Volume 6067, 606708 (2006) https://doi.org/10.1117/12.650386

KEYWORDS: Detection and tracking algorithms, Feature extraction, Curium, Optical character recognition, Binary data, Image processing, Databases, Neurons, Solids, Optical pattern recognition

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Showing 5 of 12 publications

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