Prof. Aggelos K. Katsaggelos Profile

Prof. Aggelos K. Katsaggelos

Professor at Northwestern Univ

SPIE Involvement:

Author

Publications (91)

Proceedings Article | 10 December 2021 Paper

Motion artifact reduction in abdominal MRIs using generative adversarial networks with perceptual similarity loss

Yunan Wu, Xijun Wang, Aggelos Katsaggelos

Proceedings Volume 12088, 120880H (2021) https://doi.org/10.1117/12.2605824

KEYWORDS: Motion models, Performance modeling, Magnetic resonance imaging, Data modeling, Image processing, Image quality, Denoising, Visualization, Image restoration

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Proceedings Article | 22 July 2019 Presentation

Investigation of reflectance-based pigment classification in layered media (Conference Presentation)

Lionel Fiske, Oliver Cossairt, Aggelos Katsaggelos, Marc Walton

Proceedings Volume 11058, 110580E (2019) https://doi.org/10.1117/12.2525382

KEYWORDS: Reflectivity, Associative arrays, X-ray fluorescence spectroscopy, Chemical elements, Multilayers

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Proceedings Article | 12 July 2019 Presentation + Paper

Time-domain optical coherence tomography can measure artworks with high penetration and high resolution

Bingjie Xu, Kuan He, Pengxiao Hao, Jian Gao, Florian Willomitzer, Aggelos Katsaggelos, John Tumblin, Oliver Cossairt, Marc Walton

Proceedings Volume 11058, 110580M (2019) https://doi.org/10.1117/12.2525649

KEYWORDS: Optical coherence tomography, Mirrors, Sensors, Signal to noise ratio, Imaging systems, Data acquisition, Image resolution, Cultural heritage, Reflectivity, Control systems

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Accurate measurements of the geometric shape and the internal structure of cultural artifacts are of great importance for the analysis and understanding of artworks such as paintings. Often their complex layers, delicate materials, high value and uniqueness preclude all but the sparsest sample-based measurements (microtomy or embedding of small chips of paint). In the last decade, optical coherence tomography (OCT) has enabled dense point-wise measurements of layered surfaces to create 3D images with axial resolutions at micron scales. Commercial OCT systems at biologically-useful wavelengths (900 nm to 1.3 μm) can reveal some painting layers, strong scattering and absorption at these wavelengths severely limits the penetration depth. While Fourierdomain methods increase measurement speed and eliminate moving parts, they also reduce signal-to-noise ratios and increase equipment costs. In this paper, we present an improved lower-cost time-domain OCT (TD-OCT) system for deeper, high-resolution 3D imaging of painting layers. Assembled entirely from recently-available commercially-made parts, its 2x2 fused fiber-optic coupler forms an interferometer without a delicate, manuallyaligned beam-splitter, its low-cost broadband Q-switched super-continuum laser source supplies 20 KHz 0.4-2.4 μm coherent pulses that penetrate deeply into the sample matrix, and its single low-cost InGaAs amplified photodetector replaces the sensitive spectroscopic camera required by Fourier domain OCT (FD-OCT) systems. Our fiber and filter choices operate at 2.0±0.2 μm wavelengths, as these may later help us characterize scattering and absorption characteristics, and yield axial resolution of about 4.85 μm, surprisingly close to the theoretical maximum of 4.41 μm. We show that despite the moving parts that make TD-OCT measurements more timeconsuming, replacing the spectroscopic camera required by FD-OCT with a single-pixel detector offers strong advantages. This detector measures interference power at all wavelengths simultaneously, but at a single depth, enabling the system to reach its axial resolution limits by simply using more time to acquire more samples per Ascan. We characterize the system performance using material samples that match real works of art. Our system provides an economical and practical way to improve 3D imaging performance for cultural heritage applications in terms of penetration, resolution, and dynamic range.

Proceedings Article | 23 February 2018 Presentation + Paper

Particle tracking and extended object imaging by interferometric super resolution microscopy

Itay Gdor, Seunghwan Yoo, Xiaolei Wang, Matthew Daddysman, Rosemarie Wilton, Nicola Ferrier, Mark Hereld, Oliver (Ollie) Cossairt, Aggelos Katsaggelos, Norbert Scherer

Proceedings Volume 10499, 1049911 (2018) https://doi.org/10.1117/12.2291245

KEYWORDS: Particles, Microscopes, Microscopy, Deconvolution, Interferometry, Image resolution, Bacteria

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Proceedings Article | 1 May 2017 Presentation + Paper

Matrix sparsification and non-negative factorization for task partitioning in computational sensing and imaging

David Stork, Neda Rohani, Aggelos Katsaggelos

Proceedings Volume 10222, 102220P (2017) https://doi.org/10.1117/12.2257670

KEYWORDS: Optical signal processing, Signal processing, Digital signal processing, Matrices, Sensors, Image processing, Imaging systems, Sensing systems, Optical components, Compressed sensing

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Proceedings Article | 1 May 2017 Presentation + Paper

High-speed holographic imaging using compressed sensing and phase retrieval

Zihao Wang, Donghun Ryu, Kuan He, Roarke Horstmeyer, Aggelos Katsaggelos, Oliver Cossairt

Proceedings Volume 10222, 102220G (2017) https://doi.org/10.1117/12.2262737

KEYWORDS: Sensors, Particles, Cameras, Phase retrieval, 3D image reconstruction, Compressed sensing, Digital holography, High speed imaging, 3D image processing

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SPIE Journal Paper | 2 October 2013

Compressive video sensing with limited measurements

Tao Li, Xiaohua Wang, Weihe Wang, Aggelos Katsaggelos

JEI, Vol. 22, Issue 04, 043003, (October 2013) https://doi.org/10.1117/12.10.1117/1.JEI.22.4.043003

KEYWORDS: Video, Video compression, Compressed sensing, Reconstruction algorithms, Visualization, Detection theory, Signal to noise ratio, Algorithm development, Imaging systems, Signal processing

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SPIE Journal Paper | 14 September 2012 Open Access

Passive millimeter-wave imaging with compressive sensing

Nachappa Gopalsami, Shaolin Liao, Thomas Elmer, Eugene Koehl, Alexander Heifetz, Apostolos Paul Raptis, Leonidas Spinoulas, Aggelos Katsaggelos

OE, Vol. 51, Issue 9, 091614, (September 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.9.091614

KEYWORDS: Imaging systems, Compressed sensing, Extremely high frequency, Passive millimeter wave imaging, Image restoration, Signal to noise ratio, Raster graphics, Radiometry, Metals, Photomasks

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Proceedings Article | 26 May 2011 Paper

Compressive sampling in passive millimeter-wave imaging

N. Gopalsami, T. Elmer, S. Liao, R. Ahern, A. Heifetz, A. Raptis, M. Luessi, D. Babacan, A. Katsaggelos

Proceedings Volume 8022, 80220I (2011) https://doi.org/10.1117/12.886998

KEYWORDS: Image restoration, Photomasks, Signal to noise ratio, Image acquisition, Radiometry, Passive millimeter wave imaging, Imaging systems, Lamps, Raster graphics, Compressed sensing

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Proceedings Article | 27 April 2010 Paper

Quantization of polarization states through scattering mechanisms

Glafkos Stratis, Alphonso Samuel, Salvatore Bellofiore, Mary Cassabaum, Ghassan Maalouli, Allen Taflove, Aggelos Katsaggelos, Chris Penney

Proceedings Volume 7669, 766913 (2010) https://doi.org/10.1117/12.851396

KEYWORDS: Polarization, Scattering, Quantization, Antennas, Finite-difference time-domain method, Polarimetry, Quantum mechanics, Target detection, Optical spheres, Wave plates

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Proceedings Article | 2 September 2009 Paper

Content-aware packet scheduling for multiuser scalable video delivery over wireless networks

Ehsan Maani, Peshala Pahalawatta, Randall Berry, Aggelos Katsaggelos

Proceedings Volume 7443, 74430C (2009) https://doi.org/10.1117/12.829402

KEYWORDS: Video, Scalable video coding, Distortion, Spatial resolution, Video compression, Temporal resolution, Nickel, Video coding, Signal to noise ratio, Quantization

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SPIE Journal Paper | 1 January 2009

Framework for efficient optimal multilevel image thresholding

Martin Luessi, Marco Eichmann, Guido Schuster, Aggelos Katsaggelos

JEI, Vol. 18, Issue 01, 013004, (January 2009) https://doi.org/10.1117/12.10.1117/1.3073891

KEYWORDS: Time metrology, Image segmentation, Image processing, Computer programming, Algorithms, Chemical elements, Image processing algorithms and systems, Electrical engineering, Computer science, Roads

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Proceedings Article | 15 September 2008 Paper

Sub-component modeling for face image reconstruction in video communications

Derek Shiell, Jing Xiao, Aggelos Katsaggelos

Proceedings Volume 7073, 70730Q (2008) https://doi.org/10.1117/12.796748

KEYWORDS: Video, 3D modeling, Eye models, Telecommunications, Video compression, Image compression, RGB color model, Systems modeling, Eye, Data modeling

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SPIE Journal Paper | 1 November 2007

Regularized high-resolution image reconstruction considering inaccurate motion information

Min Kyu Park, Moon-Gi Kang, Aggelos Katsaggelos

OE, Vol. 46, Issue 11, 117004, (November 2007) https://doi.org/10.1117/12.10.1117/1.2802611

KEYWORDS: Reconstruction algorithms, Motion estimation, Image restoration, Error analysis, Optical engineering, Lawrencium, Motion analysis, Drug discovery, Algorithm development, Distortion

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Proceedings Article | 19 January 2006 Paper

Toward a new video compression scheme using super-resolution

R. Molina, A. Katsaggelos, L. Alvarez, J. Mateos

Proceedings Volume 6077, 607706 (2006) https://doi.org/10.1117/12.660794

KEYWORDS: Video compression, Super resolution, Image compression, Video, Scalable video coding, Digital video discs, Image resolution, Computer programming, Image processing, Visualization

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Proceedings Article | 24 June 2005 Paper

Video summarization for energy efficient wireless streaming

Zhu Li, Fan Zhai, Aggelos Katsaggelos

Proceedings Volume 5960, 596029 (2005) https://doi.org/10.1117/12.631646

KEYWORDS: Video, Distortion, Video surveillance, Wireless communications, Energy efficiency, Video coding, Computer programming, Video processing, Telecommunications, Image processing

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Proceedings Article | 14 March 2005 Paper

Multiple global affine motion model for H.264 video coding with low bit rate

Xiaohuan Li, Joel Jackson, Aggelos Katsaggelos, Russel Merserau

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.587328

KEYWORDS: Affine motion model, Motion models, Motion estimation, Video, Molybdenum, Distortion, Computer programming, Video coding, Image segmentation, Quantization

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Proceedings Article | 14 March 2005 Paper

Energy efficient video summarization and transmission over a slow fading wireless channel

Zhu Li, Fan Zhai, Aggelos Katsaggelos, Thrasyvoulos Pappas

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.587669

KEYWORDS: Video, Distortion, Video surveillance, Video coding, Wireless communications, Energy efficiency, Video processing, Computer programming, Image processing, Information theory

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Proceedings Article | 14 March 2005 Paper

Rate-distortion optimized video summary generation and transmission over packet lossy networks

Peshala Pahalawatta, Zhu Li, Fan Zhai, Aggelos Katsaggelos

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.586327

KEYWORDS: Video, Distortion, Video surveillance, Computer programming, Internet, Video processing, Receivers, Image quality, Error analysis, Computer simulations

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Proceedings Article | 14 March 2005 Paper

MPEG-4 outer-inner lip FAP interpolation

Zhilin Wu, Aggelos Katsaggelos, Thrasyvoulos Pappas

Proceedings Volume 5685, (2005) https://doi.org/10.1117/12.596789

KEYWORDS: Laser induced plasma spectroscopy, Information visualization, Video, Visualization, Head, Receivers, Mouth, Databases, 3D modeling, Solid modeling

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SPIE Journal Paper | 1 January 2005

Iterative regularized mixed norm multichannel image restoration

Min-Cheol Hong, Tania Stathaki, Aggelos Katsaggelos

JEI, Vol. 14, Issue 01, 013004, (January 2005) https://doi.org/10.1117/12.10.1117/1.1867452

KEYWORDS: Image restoration, Signal to noise ratio, Control systems, Smoothing, Interference (communication), Point spread functions, Linear filtering, Error analysis, Chemical elements, Lithium

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Proceedings Article | 7 June 2004 Paper

Quality metrics for measuring end-to-end distortion in packet-switched video communication systems

Yiftach Eisenberg, Fan Zhai, Thrasyvoulos Pappas, Randall Berry, Aggelos Katsaggelos

Proceedings Volume 5292, (2004) https://doi.org/10.1117/12.548321

KEYWORDS: Distortion, Video, Receivers, Data compression, Telecommunications, Video surveillance, Video compression, Video coding, Transmitters, Computer programming

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Proceedings Article | 17 June 2003 Paper

Preprocessing of compressed digital video based on perceptual quality metrics

Passant Karunaratne, Aggelos Katsaggelos, Thrasyvoulos Pappas

Proceedings Volume 5007, (2003) https://doi.org/10.1117/12.485524

KEYWORDS: Video compression, Video, Visualization, Computer programming, Distortion, Video coding, Quantization, Visual compression, Video processing, Linear filtering

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SPIE Journal Paper | 1 October 2002

Iterative regularized least-mean mixed-norm image restoration

Min-Cheol Hong, Tania Stathaki, Aggelos Katsaggelos

OE, Vol. 41, Issue 10, (October 2002) https://doi.org/10.1117/12.10.1117/1.1503072

KEYWORDS: Signal to noise ratio, Image restoration, Image processing, Interference (communication), Control systems, Optical engineering, Smoothing, Cameras, Algorithm development, Performance modeling

SPIE Journal Paper | 1 August 2002

Hyperparameter estimation in image restoration problems with partially-known blurs

Nikolas Galatsanos, Vladimir Mesarovic, Rafael Molina, Aggelos Katsaggelos, Javier Mateos

OE, Vol. 41, Issue 08, (August 2002) https://doi.org/10.1117/12.10.1117/1.1487850

KEYWORDS: Signal to noise ratio, Point spread functions, Image restoration, Image analysis, Autoregressive models, Expectation maximization algorithms, Synthetic aperture radar, Optical engineering, Data modeling, Algorithm development

Proceedings Article | 8 March 2002 Paper

Multicamera setup for generating stereo panoramic video

Stavros Tzavidas, Aggelos Katsaggelos

Proceedings Volume 4661, (2002) https://doi.org/10.1117/12.460180

KEYWORDS: Cameras, Panoramic photography, Video, Eye, Mirrors, 3D modeling, Virtual reality, Distortion, Device simulation, Coded apertures

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Proceedings Article | 8 June 2001 Paper

Subjective analysis of a HMM-based visual speech synthesizer

Jay Williams, Aggelos Katsaggelos, Dean Garstecki

Proceedings Volume 4299, (2001) https://doi.org/10.1117/12.429527

KEYWORDS: Visualization, Acoustics, Visual process modeling, Signal to noise ratio, Laser induced plasma spectroscopy, Information visualization, Data modeling, Video, Databases, Visual analytics

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Proceedings Article | 29 December 2000 Paper

Preprocessing of compressed digital video

C. Andrew Segall, Passant Karunaratne, Aggelos Katsaggelos

Proceedings Volume 4310, (2000) https://doi.org/10.1117/12.411794

KEYWORDS: Image compression, Visualization, Video compression, Computer programming, Image filtering, Quantization, Digital filtering, Image processing, Image quality, Video

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Proceedings Article | 19 April 2000 Paper

Joint source-channel coding for scalable video

Lisimachos Kondi, Faisal Ishtiaq, Aggelos Katsaggelos

Proceedings Volume 3974, (2000) https://doi.org/10.1117/12.382965

KEYWORDS: Forward error correction, Distortion, Video, Scalable video coding, Video coding, Signal to noise ratio, Data compression, Quantization, Signal attenuation, Video compression

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Proceedings Article | 28 December 1998 Paper

Sampling conditions for anisotropic diffusion

C. Andrew Segall, Scott Acton, Aggelos Katsaggelos

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334658

KEYWORDS: Diffusion, Anisotropic diffusion, Smoothing, Edge detection, Image processing, Nonlinear filtering, Gaussian filters, Image segmentation, Image compression, Image analysis

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Proceedings Article | 22 September 1998 Paper

Hyperparameter estimation using hyperpriors for hierarchical Bayesian image restoration from partially known blurs

Nikolas Galatsanos, Vladimir Mesarovic, Rafael Molina, Aggelos Katsaggelos

Proceedings Volume 3459, (1998) https://doi.org/10.1117/12.323813

KEYWORDS: Point spread functions, Image restoration, Autoregressive models, Image analysis, Algorithm development, Data modeling, Expectation maximization algorithms, Fourier transforms, Computer engineering, Image filtering

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Proceedings Article | 9 January 1998 Paper

Disparity estimation with modeling of occlusion and object orientation

Andre Redert, Chun-Jen Tsai, Emile Hendriks, Aggelos Katsaggelos

Proceedings Volume 3309, (1998) https://doi.org/10.1117/12.298391

KEYWORDS: Cameras, Nanoimprint lithography, Tin, 3D applications, 3D metrology, Visual communications, Calibration, Computer programming, Evolutionary algorithms, Visual process modeling

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Proceedings Article | 9 January 1998 Paper

SNR scalable video coder using progressive transmission of DCT coefficients

Marshall Robers, Lisimachos Kondi, Aggelos Katsaggelos

Proceedings Volume 3309, (1998) https://doi.org/10.1117/12.298330

KEYWORDS: Signal to noise ratio, Video compression, Video, Quantization, Computer programming, Video surveillance, Image compression, Scalable video coding, Motion estimation, Video coding

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Proceedings Article | 9 January 1998 Paper

Iterative regularized mixed-norm image restoration algorithm

Min-Cheol Hong, Tania Stathaki, Aggelos Katsaggelos

Proceedings Volume 3309, (1998) https://doi.org/10.1117/12.298374

KEYWORDS: Image restoration, Signal to noise ratio, Smoothing, Image processing, Interference (communication), Chemical elements, Computer engineering, Applied sciences, Signal processing, Computing systems

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Proceedings Article | 9 January 1998 Paper

Joint optimal object shape estimation and encoding

Lisimachos Kondi, Fabian Meier, Guido Schuster, Aggelos Katsaggelos

Proceedings Volume 3309, (1998) https://doi.org/10.1117/12.298329

KEYWORDS: Computer programming, Tolerancing, Distortion, Image segmentation, Plutonium, Image processing algorithms and systems, Neptunium, Visualization, Video coding, Photonic integrated circuits

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Proceedings Article | 10 January 1997 Paper

Optimal decomposition for quad-trees with leaf dependencies

Guido Schuster, Aggelos Katsaggelos

Proceedings Volume 3024, (1997) https://doi.org/10.1117/12.263281

KEYWORDS: Distortion, Computer programming, Image segmentation, Image compression, Raster graphics, Algorithm development, Modulation, Algorithms, Image transmission, Motion estimation

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Proceedings Article | 10 January 1997 Paper

Optical-flow estimation for multichannel video sequences

Chun-Jen Tsai, Aggelos Katsaggelos

Proceedings Volume 3024, (1997) https://doi.org/10.1117/12.263248

KEYWORDS: Optical flow, Cameras, Video, 3D modeling, Device simulation, Imaging systems, Calibration, Computer programming, Image analysis, Computer simulations

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Proceedings Article | 10 January 1997 Paper

Regularized multichannel restoration approach for globally optimal high-resolution video sequence

Min-Cheol Hong, Moon Gi Kang, Aggelos Katsaggelos

Proceedings Volume 3024, (1997) https://doi.org/10.1117/12.263211

KEYWORDS: Video, Motion estimation, Point spread functions, Image resolution, Control systems, Computer engineering, Mathematical modeling, Image analysis, Image enhancement, Chemical elements

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SPIE Journal Paper | 1 December 1996

Iterative restoration of fast-moving objects in dynamic image sequences

Damon Tull, Aggelos Katsaggelos

OE, Vol. 35, Issue 12, (December 1996) https://doi.org/10.1117/12.10.1117/1.601108

KEYWORDS: Image restoration, Point spread functions, Image processing, Distortion, Motion models, Motion estimation, Image acquisition, Cameras, Video, Optical engineering

Proceedings Article | 16 September 1996 Paper

Parameter estimation in regularized reconstruction of BDCT compressed images for reducing blocking artifacts

Javier Mateos, Aggelos Katsaggelos, Rafael Molina

Proceedings Volume 2952, (1996) https://doi.org/10.1117/12.251331

KEYWORDS: Image compression, Reconstruction algorithms, Image quality, Visualization, Distance measurement, Quantization, Virtual colonoscopy, Wavelets, Radon, Matrices

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Proceedings Article | 16 September 1996 Paper

Iterative regularized error concealment algorithm

Min-Cheol Hong, Aggelos Katsaggelos

Proceedings Volume 2952, (1996) https://doi.org/10.1117/12.251262

KEYWORDS: Error analysis, Image compression, Image restoration, Video, Image transmission, Standards development, Switching, Matrices, Video compression, Signal attenuation

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Proceedings Article | 16 September 1996 Paper

Optimal quad-tree-based motion estimator

Guido Schuster, Aggelos Katsaggelos

Proceedings Volume 2952, (1996) https://doi.org/10.1117/12.251317

KEYWORDS: Motion estimation, Distortion, Computer programming, Video coding, Video compression, Image segmentation, Video, Motion models, Algorithm development, Distance measurement

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Proceedings Article | 16 September 1996 Paper

Multiple-candidate hierachical block matching with inherent smoothness properties

Serafim Efstratiadis, T. Karampatzakis, Haralambos Sahinoglou, Aggelos Katsaggelos

Proceedings Volume 2952, (1996) https://doi.org/10.1117/12.251303

KEYWORDS: Motion estimation, Error analysis, Image quality, Digital filtering, Image compression, Image resolution, Reconstruction algorithms, Detection and tracking algorithms, Visualization, Magnesium

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Proceedings Article | 27 February 1996 Paper

Globally optimal smoothing functional for edge-enhancing regularized image restoration

Moon Gi Kang, Aggelos Katsaggelos, Kyu Tae Park

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233226

KEYWORDS: Image restoration, Image enhancement, Spatial frequencies, Image processing, Matrices, Algorithm development, Computer engineering, Electrical engineering, Computer science, Electronics engineering

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Proceedings Article | 27 February 1996 Paper

Detection and encoding of model failures in very low bit rate video coding

Taner Ozcelik, Aggelos Katsaggelos

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233297

KEYWORDS: Computer programming, Motion models, Image segmentation, Motion estimation, Detection and tracking algorithms, Video coding, Image quality, Binary data, Low bit rate video, Video

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Proceedings Article | 27 February 1996 Paper

Optimal lossy segmentation encoding scheme

Guido Schuster, Aggelos Katsaggelos

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233321

KEYWORDS: Computer programming, Distortion, Algorithm development, Neptunium, Optimization (mathematics), Video coding, Detection and tracking algorithms, Quantization, Phase modulation, Electrical engineering

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Proceedings Article | 27 February 1996 Paper

Iterative algorithm for improving the resolution of video sequences

Brian Tom, Aggelos Katsaggelos

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233218

KEYWORDS: Image resolution, Motion estimation, Video, Motion models, Image analysis, Mathematical modeling, Error analysis, Reconstruction algorithms, Spatial resolution, Matrices

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Proceedings Article | 27 February 1996 Paper

Fast and efficient mode and quantizer selection in the rate distortion sense for H.263

Guido Schuster, Aggelos Katsaggelos

Proceedings Volume 2727, (1996) https://doi.org/10.1117/12.233293

KEYWORDS: Distortion, Computer programming, Rubidium, Video, Polonium, Low bit rate video, Lead, Video coding, Detection and tracking algorithms, Quantization

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SPIE Journal Paper | 1 January 1996

Multichannel image identification and restoration using the expectation-maximization algorithm

Brian Tom, Kuen-Tsair Lay, Aggelos Katsaggelos

OE, Vol. 35, Issue 01, (January 1996) https://doi.org/10.1117/12.10.1117/1.600876

KEYWORDS: Expectation maximization algorithms, Point spread functions, Image restoration, Matrices, Image processing, Filtering (signal processing), Signal to noise ratio, Algorithm development, Interference (communication), Optical engineering

Proceedings Article | 18 August 1995 Paper

Spatially adaptive image restoration for autoradiography

John Goyette, Moon Gi Kang, Aggelos Katsaggelos, Gregory Lapin

Proceedings Volume 2622, (1995) https://doi.org/10.1117/12.216883

KEYWORDS: Point spread functions, Absorbance, Image restoration, Interference (communication), Image resolution, Optical spheres, Image processing, Smoothing, Image filtering, Photons

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Proceedings Article | 25 April 1995 Paper

Digital restoration of images: recent advances and future trends

Aggelos Katsaggelos, Mark Banham

Proceedings Volume 10279, 102790B (1995) https://doi.org/10.1117/12.204202

KEYWORDS: Digital imaging, Image restoration, Analytical research

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Proceedings Article | 21 April 1995 Paper

Occlusion and nonstationary displacement field estimation in quantum-limited image sequences

Cheuk Chan, James Brailean, Aggelos Katsaggelos

Proceedings Volume 2501, (1995) https://doi.org/10.1117/12.206802

KEYWORDS: Image processing, Chemical elements, Motion estimation, Algorithm development, Stochastic processes, Image analysis, Interference (communication), Medical imaging, X-ray imaging, X-rays

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Proceedings Article | 21 April 1995 Paper

Video coding algorithm based on recovery techniques using mean field annealing

Taner Ozcelik, James Brailean, Aggelos Katsaggelos

Proceedings Volume 2501, (1995) https://doi.org/10.1117/12.206733

KEYWORDS: Quantization, Video, Video coding, Annealing, Computer programming, Image quality, Image quality standards, Image processing, Reconstruction algorithms, Stochastic processes

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Proceedings Article | 21 April 1995 Paper

Iterative restoration of fast moving objects in dynamic image sequences

Damon Tull, Aggelos Katsaggelos

Proceedings Volume 2501, (1995) https://doi.org/10.1117/12.206640

KEYWORDS: Point spread functions, Image restoration, Distortion, Motion estimation, Motion models, Video, Image segmentation, Image acquisition, Image processing, Cameras

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SPIE Journal Paper | 1 October 1994

Frequency-domain adaptive iterative image restoration and evaluation of the regularization parameter

Moon Gi Kang, Aggelos Katsaggelos

OE, Vol. 33, Issue 10, (October 1994) https://doi.org/10.1117/12.10.1117/12.181245

KEYWORDS: Image restoration, Image processing, Signal to noise ratio, Matrices, Algorithm development, Optical filters, Image quality, Image analysis, Digital imaging, Error analysis

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Proceedings Article | 21 September 1994 Paper

Multichannel image identification and restoration using the expectation-maximization algorithm

Brian Tom, Aggelos Katsaggelos

Proceedings Volume 2298, (1994) https://doi.org/10.1117/12.186544

KEYWORDS: Expectation maximization algorithms, Point spread functions, Image restoration, Filtering (signal processing), Image processing, Matrices, Signal to noise ratio, Radon, Interference (communication), Signal processing

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