Dr. Dimitrios Charalampidis Profile

Dr. Dimitrios Charalampidis

Professor & Chair at Univ of New Orleans

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Author

Publications (29)

Proceedings Article | 20 May 2016 Paper

Segmentation and outline detection in underwater video images using particle filters

Edward Yoerger, Dimitrios Charalampidis, George Ioup, Juliette Ioup

Proceedings Volume 9870, 98700J (2016) https://doi.org/10.1117/12.2223760

KEYWORDS: Particle filters, Image segmentation, Video, Monte Carlo methods, Particles, Video processing, Edge detection, Cameras, Image processing, Data modeling

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Proceedings Article | 2 September 2015 Paper

Implementation and performance of FPGA-accelerated particle flow filter

Dimitrios Charalampidis, Vesselin Jilkov, Jiande Wu

Proceedings Volume 9596, 95960B (2015) https://doi.org/10.1117/12.2179546

KEYWORDS: Particles, Field programmable gate arrays, Clocks, Nonlinear filtering, Particle filters, Digital signal processing, Signal processing, Control systems, Logic, Process modeling

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Proceedings Article | 22 May 2015 Paper

Stereo image segmentation with application in underwater fish detection and tracking

Dimitrios Charalampidis, Madhuri Gundam, George Ioup, Juliette Ioup, Charles Thompson

Proceedings Volume 9476, 94760H (2015) https://doi.org/10.1117/12.2177648

KEYWORDS: Image segmentation, Cameras, Video, Detection and tracking algorithms, Image processing algorithms and systems, Image processing, Algorithm development, Image resolution, Stereoscopic cameras, Calibration

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Proceedings Article | 20 April 2015 Paper

Fourier transform-based method for pattern matching: affine invariance and beyond

Madhuri Gundam, Dimitrios Charalampidis

Proceedings Volume 9477, 94770I (2015) https://doi.org/10.1117/12.2176969

KEYWORDS: Fourier transforms, Computer programming, Image processing, Error analysis, Detection and tracking algorithms, Image segmentation, Image processing algorithms and systems, Electrical engineering, Optical pattern recognition, Current controlled current source

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Proceedings Article | 3 June 2011 Paper

Impulse noise detection and removal using multiple weighted median filters

Dimitrios Charalampidis, Naga Vayuvegula

Proceedings Volume 8056, 805602 (2011) https://doi.org/10.1117/12.884749

KEYWORDS: Digital filtering, Image filtering, Signal to noise ratio, Image processing, Picosecond phenomena, Image denoising, Linear filtering, Neodymium, Electrophoretic light scattering, Electrical engineering

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Proceedings Article | 3 June 2011 Paper

Eye tracking and its application in human computer interfaces

Thomas Carroll, Aaron Rogers, Dimitrios Charalampidis, Huimin Chen

Proceedings Volume 8056, 805607 (2011) https://doi.org/10.1117/12.884748

KEYWORDS: Cameras, Eye, Image filtering, Head, Calibration, Digital filtering, Image processing, Detection and tracking algorithms, Edge detection, Human-machine interfaces

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Proceedings Article | 21 May 2011 Paper

Sensor management for collision alert in orbital object tracking

Peiran Xu, Huimin Chen, D. Charalampidis, Dan Shen, Genshe Chen, Erik Blasch, Khanh Pham

Proceedings Volume 8044, 80440E (2011) https://doi.org/10.1117/12.883632

KEYWORDS: Sensors, Satellites, Nonlinear filtering, Digital filtering, Motion models, Algorithm development, Collision avoidance, Data modeling, Picosecond phenomena, Surveillance

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Given the increasingly dense environment in both low-earth orbit (LEO) and geostationary orbit (GEO), a sudden change in the trajectory of any existing resident space object (RSO) may cause potential collision damage to space assets. With a constellation of electro-optical/infrared (EO/IR) sensor platforms and ground radar surveillance systems, it is important to design optimal estimation algorithms for updating nonlinear object states and allocating sensing resources to effectively avoid collisions among many RSOs. Previous work on RSO collision avoidance often assumes that the maneuver onset time or maneuver motion of the space object is random and the sensor management approach is designed to achieve efficient average coverage of the RSOs. Few attempts have included the inference of an object's intent in the response to an RSO's orbital change. We propose a game theoretic model for sensor selection and assume the worst case intentional collision of an object's orbital change. The intentional collision results from maximal exposure of an RSO's path. The resulting sensor management scheme achieves robust and realistic collision assessment, alerts the impending collisions, and identifies early RSO orbital change with lethal maneuvers. We also consider information sharing among distributed sensors for collision alert and an object's intent identification when an orbital change has been declared. We compare our scheme with the conventional (non-game based) sensor management (SM) scheme using a LEO-to-LEO space surveillance scenario where both the observers and the unannounced and unplanned objects have complete information on the constellation of vulnerable assets. We demonstrate that, with adequate information sharing, the distributed SM method can achieve the performance close to that of centralized SM in identifying unannounced objects and making early warnings to the RSO for potential collision to ensure a proper selection of collision avoidance action.

Proceedings Article | 27 April 2010 Paper

Investigating directional structures in weather radar imagery

Dimitrios Charalampidis

Proceedings Volume 7669, 766918 (2010) https://doi.org/10.1117/12.851276

KEYWORDS: Radar, Image filtering, Gaussian filters, Radar imaging, Smoothing, Electronic filtering, Error analysis, Meteorology, Digital filtering, Electrical engineering

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Proceedings Article | 15 April 2010 Paper

Computationally efficient radar image based forecasting using RBF neural networks

Dimitrios Charalampidis, Sravanthi Kattekola

Proceedings Volume 7701, 77010D (2010) https://doi.org/10.1117/12.851305

KEYWORDS: Data modeling, Neural networks, Radar, Motion models, Signal to noise ratio, Matrices, Computer simulations, Systems modeling, Electrical engineering, Visual information processing

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Proceedings Article | 29 April 2009 Paper

Filtering of weather radar imagery using steerable Gaussian smoothers

Dimitrios Charalampidis, Anirudh Paduru

Proceedings Volume 7308, 730811 (2009) https://doi.org/10.1117/12.819088

KEYWORDS: Image filtering, Gaussian filters, Radar, Image processing, Signal to noise ratio, Linear filtering, Fourier transforms, Spatial filters, Bessel functions, Convolution

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Proceedings Article | 29 April 2009 Paper

Tracking of storm fronts in weather radar imagery

Dimitrios Charalampidis, Anirudh Paduru

Proceedings Volume 7317, 73170C (2009) https://doi.org/10.1117/12.819097

KEYWORDS: Prototyping, Image resolution, Meteorology, Radar, Matrices, Neural networks, Image processing, Mahalanobis distance, Reflectivity, Process modeling

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Proceedings Article | 28 April 2009 Paper

An automatic eye detection and tracking technique for stereo video sequences

Anirudh Paduru, Dimitrios Charalampidis, Brandon Fouts, Kim Jovanovich

Proceedings Volume 7341, 73410L (2009) https://doi.org/10.1117/12.819081

KEYWORDS: Cameras, Eye, Head, Automatic tracking, Video, Algorithm development, Imaging systems, Image segmentation, Distance measurement, Human-computer interaction

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Proceedings Article | 17 March 2008 Paper

Multifractal and directional wavelet analysis for accurate detection of precipitation events in weather radar images

A. Alsamman, R. Dahale, Dimitrios Charalampidis

Proceedings Volume 6977, 69770I (2008) https://doi.org/10.1117/12.781834

KEYWORDS: Wavelets, Radar, Reflectivity, Analytical research, Computer simulations, Image processing, Detection and tracking algorithms, Optoelectronics, Electrical engineering, Image filtering

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Proceedings Article | 14 May 2007 Paper

A texture-based technique for DEM generation from LIDAR data

Dimitrios Charalampidis, Keith Alphonso

Proceedings Volume 6550, 65500O (2007) https://doi.org/10.1117/12.719935

KEYWORDS: LIDAR, Buildings, Vegetation, Digital filtering, Data modeling, Data processing, Image segmentation, Tin, Visual process modeling, Visual analytics

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Proceedings Article | 7 May 2007 Paper

Target detection based on multiresolution fractal analysis

Dimitrios Charalampidis, Gregory Stein

Proceedings Volume 6567, 65671B (2007) https://doi.org/10.1117/12.720145

KEYWORDS: Target detection, Fractal analysis, Synthetic aperture radar, Feature extraction, Target recognition, Wavelets, Spatial resolution, Autoregressive models, Image filtering, Automatic target recognition

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Proceedings Article | 30 April 2007 Paper

Fast-varying pitch tracking: a new approach to speech modeling

Dimitrios Charalampidis

Proceedings Volume 6560, 65600P (2007) https://doi.org/10.1117/12.719070

KEYWORDS: Detection and tracking algorithms, Signal processing, Speech recognition, Statistical analysis, Computer programming, Wavelets, Electrical engineering, Feature extraction, Associative arrays, Sensors

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Proceedings Article | 25 April 2007 Paper

A progressive de-skewing technique for document image analysis

James Haralambides, Dimitrios Charalampidis

Proceedings Volume 6575, 657504 (2007) https://doi.org/10.1117/12.720128

KEYWORDS: Hough transforms, Detection and tracking algorithms, Image processing, Spatial resolution, Document image analysis, Image segmentation, Image processing algorithms and systems, Video, Image analysis, Visualization

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Proceedings Article | 17 May 2006 Paper

Target detection using an improved fractal scheme

Gregory Stein, Dimitrios Charalampidis

Proceedings Volume 6237, 62370L (2006) https://doi.org/10.1117/12.666598

KEYWORDS: Target detection, Synthetic aperture radar, Fractal analysis, Feature extraction, Target recognition, Wavelets, Automatic target recognition, Image segmentation, Image classification, Detection and tracking algorithms

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Proceedings Article | 12 May 2006 Paper

VQ/DCT-based robust image watermarking

Dimitrios Charalampidis

Proceedings Volume 6246, 62460L (2006) https://doi.org/10.1117/12.666582

KEYWORDS: Digital watermarking, Image processing, Image compression, Quantization, Signal processing, Digital filtering, Visualization, Feature extraction, Signal to noise ratio, Image filtering

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Proceedings Article | 3 August 2004 Paper

Optical implementation of a quality control algorithm for the removal of nonprecipitation echoes in weather radars

Dimitrios Charalampidis, Abdul Rahman Alsamman

Proceedings Volume 5435, (2004) https://doi.org/10.1117/12.544293

KEYWORDS: Radar, Reflectivity, Optical correlators, Image filtering, Fourier transforms, Joint transforms, Optoelectronics, Spatial light modulators, Computer simulations, Computing systems

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Proceedings Article | 15 July 2004 Paper

Texture synthesis based on transition probabilities and localized correlation

Dimitrios Charalampidis

Proceedings Volume 5438, (2004) https://doi.org/10.1117/12.546164

KEYWORDS: Fourier transforms, Structural design, Machine vision, Visualization, Electrical engineering, Image classification, Scene classification, Image segmentation, Computer graphics, Visual process modeling

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Proceedings Article | 8 August 2003 Paper

Texture synthesis based on cluster transition probabilities

Dimitrios Charalampidis

Proceedings Volume 5108, (2003) https://doi.org/10.1117/12.487850

KEYWORDS: Lithium, Image filtering, Autoregressive models, Visualization, Raster graphics, Linear filtering, Curium, Electronic filtering, Image segmentation, Statistical analysis

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Proceedings Article | 8 August 2003 Paper

Image compression using cascade of neural networks

Dimitrios Charalampidis, Chigozie Obiegbu

Proceedings Volume 5108, (2003) https://doi.org/10.1117/12.484830

KEYWORDS: Image compression, Chromium, Computer programming, Neural networks, Image processing, Image quality, Error analysis, Signal to noise ratio, Visual compression, Visualization

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Proceedings Article | 11 March 2002 Paper

Fuzzy ART and Fuzzy ARTMAP with adaptively weighted distances

Dimitrios Charalampidis, Georgios Anagnostopoulos, Michael Georgiopoulos, Takis Kasparis

Proceedings Volume 4739, (2002) https://doi.org/10.1117/12.458723

KEYWORDS: Distance measurement, Distributed interactive simulations, Neural networks, Electronic filtering, Fuzzy logic, Roads, Space operations, Databases, Network architectures, Image classification

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Proceedings Article | 26 March 2001 Paper

Rotationally invariant texture segmentation using directional wavelet-based fractal dimensions

Dimitrios Charalampidis, Takis Kasparis

Proceedings Volume 4391, (2001) https://doi.org/10.1117/12.421191

KEYWORDS: Image segmentation, Wavelets, Fractal analysis, Electronic filtering, Image processing algorithms and systems, Smoothing, Algorithm development, Atrial fibrillation, Feature extraction, Gaussian filters

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Proceedings Article | 13 July 2000 Paper

Use of multifractals to detect anomalous propagation (AP) in weather radar

Dimitrios Charalampidis, Takis Kasparis, Linwood Jones, Michael Georgiopoulos

Proceedings Volume 4048, (2000) https://doi.org/10.1117/12.391977

KEYWORDS: Image processing, Radar, Reflectivity, Algorithm development, Meteorology, Statistical analysis, Satellites, Signal processing, Calibration, Atmospheric propagation engineering

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Proceedings Article | 29 June 2000 Paper

Classification of noisy patterns using ARTMAP-based neural networks

Dimitrios Charalampidis, Georgios Anagnostopoulos, Takis Kasparis, Michael Georgiopoulos

Proceedings Volume 4041, (2000) https://doi.org/10.1117/12.390470

KEYWORDS: Image classification, Neural networks, Fractal analysis, Image filtering, Feature extraction, Interference (communication), Signal to noise ratio, Image segmentation, Artificial intelligence, Fuzzy logic

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Proceedings Article | 17 July 1998 Paper

Texture classification using ART-based neural networks and fractals

Dimitrios Charalampidis, Takis Kasparis, Michael Georgiopoulos

Proceedings Volume 3374, (1998) https://doi.org/10.1117/12.327099

KEYWORDS: Image classification, Image segmentation, Neural networks, Fractal analysis, Image filtering, Feature extraction, Fuzzy logic, Tolerancing, Protactinium, Distance measurement

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Proceedings Article | 6 July 1998 Paper

Segmentation of textured images based on multiple fractal feature combinations

Dimitrios Charalampidis, Takis Kasparis, Jannick Rolland

Proceedings Volume 3387, (1998) https://doi.org/10.1117/12.316413

KEYWORDS: Image segmentation, Image filtering, Fractal analysis, Image processing algorithms and systems, Feature extraction, Gaussian filters, Optical filters, Image classification, Nonlinear filtering, Linear filtering

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Showing 5 of 29 publications

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