Dr. Rupert C. D. Young Profile

Dr. Rupert C. D. Young

Reader at Univ of Sussex

SPIE Involvement:

Conference Program Committee | Author

Area of Expertise:

Optical Signal Processing , Pattern Recognition , Holography , Imaging Processing , Correlation Filters , Spatial Light Modulators

Websites:

Company Website

Publications (77)

Proceedings Article | 7 June 2024 Presentation + Paper

Improving pulmonary CT image generation with transformer-based generative adversarial networks

Yueying Tian, Xudong Han, Elif Ucurum, Chris Chatwin, Phil Birch, Rupert Young

Proceedings Volume 13040, 1304002 (2024) https://doi.org/10.1117/12.3017971

KEYWORDS: Computed tomography, 3D modeling, Education and training, Gallium nitride, 3D image processing, Data modeling, Image classification, Medical imaging

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SPIE Journal Paper | 28 October 2023

Scintillation and bit error rate analysis of zero-order Bessel–Gauss beams in atmospheric turbulence based on the extended Rytov theory

Yousef Shishter, Falah Ali, Rupert Young

OE, Vol. 63, Issue 04, 041205, (October 2023) https://doi.org/10.1117/12.10.1117/1.OE.63.4.041205

KEYWORDS: Scintillation, Error analysis, Turbulence, Receivers, Signal to noise ratio, Atmospheric propagation, Alternate lighting of surfaces, Optical engineering, Wave propagation, Modulation

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Proceedings Article | 11 May 2020 Presentation + Paper

Detection of moving human using optimized correlation filters in homogeneous environments

Naeem Akbar, Sara Tehsin, Ahmad Bilal, Saddaf Rubab, Saad Rehman, Rupert Young

Proceedings Volume 11400, 114000P (2020) https://doi.org/10.1117/12.2559578

KEYWORDS: Video, Detection and tracking algorithms, Real-time computing, Target detection, Cameras

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Proceedings Article | 27 April 2020 Presentation

Occluded illegally parked vehicle detection and long term tracking (Conference Presentation)

Xing Gao, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 11400, 114000C (2020) https://doi.org/10.1117/12.2558549

KEYWORDS: Algorithm development, Detection and tracking algorithms, Light sources and illumination, Electronic filtering

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Proceedings Article | 22 April 2020 Presentation + Paper

Selection of CPU scheduling dynamically through machine learning

Sara Tehsin, Yame Asfia, Naeem Akbar, Farhan Riaz, Saad Rehman, Rupert Young

Proceedings Volume 11400, 114000O (2020) https://doi.org/10.1117/12.2559540

KEYWORDS: Machine learning, Switching, Data modeling, Fuzzy logic, Analytical research, Data processing, Algorithm development, Software engineering, Computer engineering, Computer security

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Proceedings Article | 1 April 2020 Presentation + Paper

Implementations and optimisations of optical Conv2D networks designs

Philip Birch, Navid Rahimi, Peter Overburry, Rupert Young, Chris Chatwin

Proceedings Volume 11356, 113561C (2020) https://doi.org/10.1117/12.2554021

KEYWORDS: Neurons, Convolution, Network architectures, Optical networks, Spatial light modulators, Optical design, Multiplexing, Modulation, Phase only filters, Sensors

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Proceedings Article | 21 May 2019 Presentation + Paper

Wireless charging pad detection and alignment using a fisheye camera for electric vehicles

Nauman Javed, David Guerrero, Rupert Young, Phil Birch, Chris Chatwin

Proceedings Volume 10995, 109950F (2019) https://doi.org/10.1117/12.2519481

KEYWORDS: Detection and tracking algorithms, Automatic tracking, Visualization, Control systems, Target detection

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Proceedings Article | 13 May 2019 Presentation + Paper

Hardware design of correlation filters for target detection

Naeem Akbar, Sara Tehsin, Haseeb ur Rehman, Saad Rehman, Rupert Young

Proceedings Volume 10995, 109950E (2019) https://doi.org/10.1117/12.2519497

KEYWORDS: Field programmable gate arrays, Image filtering, Filtering (signal processing), MATLAB, Distortion, Target detection, Image processing

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Proceedings Article | 13 May 2019 Presentation + Paper

Enhanced target recognition employing spatial correlation filters and affine scale invariant feature transform

Akber Gardezi, Usman Malik, Saad Rehman, R. C. Young, P. Birch, C. Chatwin

Proceedings Volume 10995, 109950N (2019) https://doi.org/10.1117/12.2520555

KEYWORDS: Image filtering, Detection and tracking algorithms, Target detection, Object recognition, Composites, Tolerancing, Target recognition, Spatial filters, Light sources and illumination, Digital filtering

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SPIE Journal Paper | 14 September 2018 Open Access

Real-time unmanned aerial vehicle tracking of fast moving small target on ground

Junhua Yan, Jun Du, Yong Young, Christopher R. Chatwin, Rupert C. D. Young, Philip Birch

JEI, Vol. 27, Issue 05, 053010, (September 2018) https://doi.org/10.1117/12.10.1117/1.JEI.27.5.053010

KEYWORDS: Image filtering, Unmanned aerial vehicles, Electronic filtering, Optical filters, Target detection, Motion models, Optimal filtering, Image fusion, Detection and tracking algorithms, Digital filtering

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Proceedings Article | 24 May 2018 Paper

Low-cost polarimetric imaging for surveillance

Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 10677, 1067736 (2018) https://doi.org/10.1117/12.2307489

KEYWORDS: Cameras, Polarization, Polarimetry, Video, Image processing, Image segmentation, Surveillance, Polarizers, Calibration

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Proceedings Article | 9 May 2018 Presentation + Paper

ASIFT based recognition of fixed shape moving objects and tracking via modified particle filters

Haris Masood, Saad Rehman, Aimal Khan, Wasi Haider, Rupert Young, Phil Birch, Mohammad Alam

Proceedings Volume 10649, 106490C (2018) https://doi.org/10.1117/12.2304699

KEYWORDS: Particle filters, Object recognition, Detection and tracking algorithms, Image processing, Machine vision, Computer vision technology, Cameras, Zoom lenses, Environmental sensing

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Proceedings Article | 27 April 2018 Paper

Comparative study of local binary pattern and its shifted variant for osteoporosis identification

Hina Ajmal, Saad Rehman, Farhan Hussain, Muhammad Abbas, Aimal Khan, Rupert Young, Mohammad Alam

Proceedings Volume 10649, 1064908 (2018) https://doi.org/10.1117/12.2304721

KEYWORDS: Bone, Binary data, Radiography, Feature extraction, Image classification, Statistical analysis, Quantization, Image filtering, Image enhancement, Fractal analysis

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Proceedings Article | 27 April 2018 Presentation + Paper

A simplification of the Shor quantum factorization algorithm employing a quantum Hadamard transform

Rupert C. Young, Philip Birch, Chris Chatwin

Proceedings Volume 10649, 1064903 (2018) https://doi.org/10.1117/12.2309468

KEYWORDS: Quantum computing, Superposition, Fourier transforms, Computing systems, Quantum communications, Binary data, Signal processing, Algorithms, Matrices, Quantization

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Proceedings Article | 1 May 2017 Paper

Comparative analysis of zero aliasing logarithmic mapped optimal trade-off correlation filter

Sara Tehsin, Saad Rehman, Ahmed Bilal, Qaiser Chaudry, Omer Saeed, Muhammad Abbas, Rupert Young

Proceedings Volume 10203, 1020305 (2017) https://doi.org/10.1117/12.2261439

KEYWORDS: Image filtering, Optimal filtering, Target detection, Target recognition, Analytical research, Detection and tracking algorithms, Tolerancing, Gaussian filters, Image enhancement, Signal to noise ratio, Image analysis

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Proceedings Article | 27 April 2016 Paper

A wide field fluorescence lifetime imaging system using a light sheet microscope

Phil Birch, Lamar Moore, Xiaofei Li, Roger Phillips, Rupert Young, Chris Chatwin

Proceedings Volume 9887, 98871O (2016) https://doi.org/10.1117/12.2230908

KEYWORDS: Microscopes, Fluorescence lifetime imaging, Microchannel plates, Imaging systems, Time metrology, Microscopy, Photon counting, Image resolution, Photomultipliers, Sensors, Photons, Electron multiplying charge coupled devices, Distortion

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Proceedings Article | 20 April 2016 Paper

Vehicle monitoring under Vehicular Ad-Hoc Networks (VANET) parameters employing illumination invariant correlation filters for the Pakistan motorway police

A. Gardezi, T. Umer, F. Butt, R. C. Young, C. Chatwin

Proceedings Volume 9845, 984508 (2016) https://doi.org/10.1117/12.2228295

KEYWORDS: Image filtering, Optical filters, Image filtering, Roads, Target detection, Data modeling, Fluid dynamics, Safety, Stochastic processes, Digital filtering, Computing systems

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Proceedings Article | 20 April 2016 Paper

Improved maximum average correlation height filter with adaptive log base selection for object recognition

Sara Tehsin, Saad Rehman, Ahmad Awan, Qaiser Chaudry, Muhammad Abbas, Rupert Young, Afia Asif

Proceedings Volume 9845, 984506 (2016) https://doi.org/10.1117/12.2223621

KEYWORDS: Image filtering, Digital filtering, Electronic filtering, Object recognition, Pattern recognition, Image processing, Distortion, Target detection, Databases, Tolerancing, Target recognition, Sensors

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Proceedings Article | 20 April 2016 Paper

Considerations for the extension of coherent optical processors into the quantum computing regime

Rupert C. Young, Philip Birch, Chris Chatwin

Proceedings Volume 9845, 98450K (2016) https://doi.org/10.1117/12.2220396

KEYWORDS: Quantum computing, Superposition, Optical signal processing, Fourier transforms, Wavefronts, Image processing, Computer architecture, Optical image encryption, Multiphoton processes, Quantum optics, Spatial light modulators, Quantum communications, Image encryption, Binary data, Phase shift keying

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Proceedings Article | 20 April 2015 Paper

Comparison of spatial domain optimal trade-off maximum average correlation height (OT-MACH) filter with scale invariant feature transform (SIFT) using images with poor contrast and large illumination gradient

A. Gardezi, T. Qureshi, A. Alkandri, R. C. Young, P. Birch, C. Chatwin

Proceedings Volume 9477, 947706 (2015) https://doi.org/10.1117/12.2177451

KEYWORDS: Image filtering, Target detection, Light sources and illumination, Detection and tracking algorithms, Light sources, Digital filtering, Optical filters, Spatial filters, Tolerancing, Target recognition

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Proceedings Article | 20 April 2015 Paper

Human detection in sensitive security areas through recognition of omega shapes using MACH filters

Saad Rehman, Farhan Riaz, Ali Hassan, Muwahida Liaquat, Rupert Young

Proceedings Volume 9477, 947708 (2015) https://doi.org/10.1117/12.2176841

KEYWORDS: Image filtering, Cameras, Information security, Optical filters, Pattern recognition, Target recognition, Computer security, Sensors, Image processing, Object recognition

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Proceedings Article | 4 March 2015 Paper

Hierarchical video surveillance architecture: a chassis for video big data analytics and exploration

Sola Ajiboye, Philip Birch, Christopher Chatwin, Rupert Young

Proceedings Volume 9407, 94070K (2015) https://doi.org/10.1117/12.2083937

KEYWORDS: Video surveillance, Video, Cameras, Imaging systems, Computing systems, Surveillance, Safety, Analytics, Surveillance systems, Telecommunications

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Proceedings Article | 5 March 2014 Paper

PHACT: Parallel HOG and Correlation Tracking

Waqas Hassan, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 9026, 902602 (2014) https://doi.org/10.1117/12.2039181

KEYWORDS: Image filtering, Sensors, Detection and tracking algorithms, Optical correlators, Video, Electronic filtering, Fourier transforms, Cameras, Light sources and illumination, Optical filters

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Proceedings Article | 29 April 2013 Paper

Coherent optical implementations of the fast Fourier transform and their comparison to the optical implementation of the quantum Fourier transform

Rupert Young, Philip Birch, Chris Chatwin

Proceedings Volume 8748, 874806 (2013) https://doi.org/10.1117/12.2014042

KEYWORDS: Fourier transforms, Superposition, Waveguides, Wavefronts, Spatial light modulators, Quantum communications, Detection and tracking algorithms, Phase shifts, Quantum computing, Optical components

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Proceedings Article | 29 April 2013 Paper

Defining properties of speech spectrogram images to allow effective pre-processing prior to pattern recognition

Mohammed Al-Darkazali, Rupert Young, Chris Chatwin, Philip Birch

Proceedings Volume 8748, 87480G (2013) https://doi.org/10.1117/12.2014511

KEYWORDS: Fourier transforms, Image segmentation, Neodymium, Image processing, Analytical research, Pattern recognition, Image resolution, Interference (communication), Signal processing, Image filtering

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Proceedings Article | 19 March 2013 Paper

An improved background segmentation method for ghost removals

Waqas Hassan, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8663, 86630W (2013) https://doi.org/10.1117/12.2008653

KEYWORDS: Image segmentation, Light sources and illumination, Video surveillance, Video, Manganese, Computer security, Cameras, Surveillance systems, Convolution, Information science

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Proceedings Article | 23 April 2012 Paper

Improving OT-MACH filter performance for target recognition applications with the use of a Rayleigh distribution filter

Ahmad Alkandri, Nagachetan Bangalore, Akber Gardezi, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8398, 83980D (2012) https://doi.org/10.1117/12.918756

KEYWORDS: Image filtering, Linear filtering, Forward looking infrared, Gaussian filters, 3D modeling, Target recognition, Optical filters, Computer aided design, Target detection, Wavelets

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Proceedings Article | 13 October 2011 Paper

Application of speed-enhanced spatial domain correlation filters for real-time security monitoring

Akber Gardezi, Nagachetan Bangalore, Ahmed Al-Kandri, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8189, 81890R (2011) https://doi.org/10.1117/12.898915

KEYWORDS: Field programmable gate arrays, Image filtering, Forward looking infrared, Linear filtering, Target detection, Target recognition, Spatial filters, 3D modeling, Optical correlators, Image enhancement

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Proceedings Article | 28 September 2011 Paper

Automatic parameter adjustment of difference of Gaussian (DoG) filter to improve OT-MACH filter performance for target recognition applications

Ahmad Alkandri, Akber Gardezi, Nagachetan Bangalore, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8185, 81850M (2011) https://doi.org/10.1117/12.897309

KEYWORDS: Optical filters, Gaussian filters, 3D modeling, Target detection, Image filtering, Computer aided design, Forward looking infrared, Target recognition, Bandpass filters, 3D acquisition

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Proceedings Article | 3 June 2011 Paper

Door surveillance using edge map-based Harris corner detector and active contour orientation

Nagachetan Bangalore, Waqas Hassan, Bhargav Mitra, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8056, 805608 (2011) https://doi.org/10.1117/12.883843

KEYWORDS: Surveillance, Cameras, Sensors, Corner detection, Hough transforms, Video, Video surveillance, Detection and tracking algorithms, Surveillance systems, Image filtering

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Accurately generating an alarm for a moving door is a precondition for tracking, recognizing and segmenting objects or people entering or exiting the door. The challenge of generating an alarm when a door event occurs is difficult when dealing with complex doors, moving cameras, objects moving or an obscured entrance of the door, together with the presence of varying illumination conditions such as a door-way light being switched on. In this paper, we propose an effective method of tracking the door motion using edge-map information contained within a localised region at the top of the door. The region is located where the top edge of the door displaces every time the door is opened or closed. The proposed algorithm uses the edge-map information to detect the moving corner in the small windowed area with the help of a Harris corner detector. The moving corner detected in the selected region gives an exact coordinate of the door corner in motion, thus helping in generating an alarm to signify that the door is being opened or closed. Additionally, due to the prior selection of the small region, the proposed method nullifies the adverse effects mentioned above and helps prevent different objects that move in front of the door affecting its efficient tracking. The proposed overall method also generates an alarm to signify whether the door was displaced to provide entry or exit. To do this, an active contour orientation is computed to estimate the direction of motion of objects in the door area when an event occurs. This information is used to distinguish between objects and entities entering or exiting the door. A Hough transform is applied on a specific region in the frame to detect a line, which is used to perform error correction to the selected windows. The detected line coordinates are used to nullify the effects of a moving camera platform, thus improving the robustness of the results. The developed algorithm has been tested on all the Door Zone video sequences contained with the United Kingdom Home Office i-LIDs dataset, with promising results.

Proceedings Article | 26 April 2011 Paper

Enhancement of the speed of space-variant correlation filter implementations by using low-pass pre-filtering for kernel placement and applications to real-time security monitoring

Akber Gardezi, Ahmad Al-Kandri, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8055, 805509 (2011) https://doi.org/10.1117/12.883784

KEYWORDS: Image filtering, Linear filtering, Target detection, Target recognition, Optical filters, Forward looking infrared, Nonlinear filtering, Thermography, Detection and tracking algorithms, 3D modeling

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Proceedings Article | 26 April 2011 Paper

Parameter optimization of the optimal trade-off maximum average correlation height filter for FLIR imaging in high clutter environments

Ahmad Alkandri, Akber Gardezi, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8055, 805508 (2011) https://doi.org/10.1117/12.882823

KEYWORDS: Image filtering, Forward looking infrared, Digital filtering, Target detection, Computer aided design, Sensors, 3D modeling, 3D image processing, Target acquisition, Statistical modeling

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Proceedings Article | 26 April 2011 Paper

Tracking illegally parked vehicles using correlation of multi-scale difference of Gaussian filtered patches

Bhargav Mitra, Waqas Hassan, Nagachetan Bangalore, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8055, 805503 (2011) https://doi.org/10.1117/12.883821

KEYWORDS: Image filtering, Distortion, Bandpass filters, Electronic filtering, Video, RGB color model, Gaussian filters, Image segmentation, Video surveillance, Algorithm development

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Proceedings Article | 26 April 2011 Paper

Robust human intrusion detection technique using hue-saturation histograms

Waqas Hassan, Bhargav Mitra, Nagachetan Bangalore, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 8055, 80550J (2011) https://doi.org/10.1117/12.883973

KEYWORDS: Video, Distortion, RGB color model, Image segmentation, Light sources and illumination, Computer intrusion detection, Cameras, Chromium, Binary data, Detection and tracking algorithms

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SPIE Journal Paper | 1 November 2010

Efficient denoising of images using a nonaggressive median filtering scheme

Bhargav Mitra, Philip Birch, Rupert Young, Chris Chatwin

OE, Vol. 49, Issue 11, 117004, (November 2010) https://doi.org/10.1117/12.10.1117/1.3509367

KEYWORDS: Digital filtering, Image filtering, Optical filters, Denoising, Bridges, Optical engineering, Image processing, Image segmentation, Cameras, Fuzzy logic

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Proceedings Article | 12 October 2010 Paper

A space variant maximum average correlation height (MACH) filter for object recognition in real time thermal images for security applications

Akber Gardezi, Ahmed Alkandri, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 7838, 78380N (2010) https://doi.org/10.1117/12.865485

KEYWORDS: Image filtering, Forward looking infrared, Target detection, Optical filters, Image sensors, Target recognition, Thermography, Sensors, Optical correlators, Tolerancing

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Proceedings Article | 13 May 2010 Paper

Illumination invariant method to detect and track left luggage in public areas

Waqas Hassan, Bhargav Mitra, Chris Chatwin, Rupert Young, Philip Birch

Proceedings Volume 7696, 76961V (2010) https://doi.org/10.1117/12.849224

KEYWORDS: Databases, Binary data, Cameras, Electronic filtering, Image segmentation, Distortion, RGB color model, Gaussian filters, Imaging systems, Video

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Proceedings Article | 13 May 2010 Paper

Implementation of the Maximum Average Correlation Height (MACH) filter in the spatial domain for object recognition from clutter backgrounds

Akber Gardezi, Philip Birch, Ioannis Kypraios, Rupert Young, Christopher Chatwin

Proceedings Volume 7696, 76961S (2010) https://doi.org/10.1117/12.850216

KEYWORDS: Image filtering, Spatial filters, Object recognition, Optical correlators, Tolerancing, Holography, Distortion, Field programmable gate arrays, Target detection, Convolution

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Proceedings Article | 13 May 2010 Paper

Volume holographic MACH correlator

Philip Birch, Akber Gardezi, Rupert Young, Chris Chatwin

Proceedings Volume 7696, 76961L (2010) https://doi.org/10.1117/12.848705

KEYWORDS: Optical correlators, Spatial light modulators, Volume holography, Holography, Holograms, Charge-coupled devices, Optical filters, Image filtering, Video, Electronics

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Proceedings Article | 15 April 2010 Paper

A two-stage approach to detect abandoned baggage in public places

Bhargav Mitra, Waqas Hassan, Philip Birch, Akber Gardezi, Rupert Young, Chris Chatwin

Proceedings Volume 7701, 770107 (2010) https://doi.org/10.1117/12.849215

KEYWORDS: RGB color model, Binary data, Sensors, Detection and tracking algorithms, Distortion, Algorithm development, Cameras, Roentgenium, Information security, Intelligence systems

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Proceedings Article | 1 September 2009 Paper

Modified-hybrid optical neural network filter for multiple object recognition within cluttered scenes

Ioannis Kypraios, Rupert C. D. Young, Chris Chatwin

Proceedings Volume 7442, 74420P (2009) https://doi.org/10.1117/12.826556

KEYWORDS: Image filtering, Video, Optical filters, Nonlinear filtering, Neurons, Neural networks, Object recognition, Optical correlators, Linear filtering, Artificial neural networks

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Proceedings Article | 13 April 2009 Paper

An optical space domain volume holographic correlator

Philip Birch, Akber Gardezi, Bhargav Mitra, Rupert Young, Chris Chatwin

Proceedings Volume 7340, 734004 (2009) https://doi.org/10.1117/12.817828

KEYWORDS: Optical correlators, Spatial light modulators, Volume holography, Charge-coupled devices, Holography, Image filtering, Optical filters, Holograms, Sensors, Fourier transforms

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Proceedings Article | 13 April 2009 Paper

Logarithmic r-theta mapping for hybrid optical neural network filter for multiple objects recognition within cluttered scenes

Ioannis Kypraios, Rupert Young, Chris Chatwin, Phil Birch

Proceedings Volume 7340, 73400N (2009) https://doi.org/10.1117/12.818789

KEYWORDS: Video, Sensors, Image filtering, Neurons, Image sensors, Neural networks, Optical filters, Object recognition, Associative arrays, Hybrid optics

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Proceedings Article | 3 October 2008 Paper

Performance analysis of a modified moving shadow elimination method developed for indoor scene activity tracking

Bhargav Kumar Mitra, Muhammad Kamran Fiaz, Ioannis Kypraios, Philip Birch, Rupert Young, Chris Chatwin

Proceedings Volume 7119, 71190A (2008) https://doi.org/10.1117/12.800376

KEYWORDS: RGB color model, Video, Image segmentation, Surveillance systems, Distortion, Video processing, Sensors, Binary data, Statistical analysis, Data modeling

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Proceedings Article | 25 April 2008 Paper

On a method to eliminate moving shadows in video sequences

Bhargav Kumar Mitra, Philip Birch, Ioannis Kypraios, Rupert Young, Chris Chatwin

Proceedings Volume 7000, 700012 (2008) https://doi.org/10.1117/12.779744

KEYWORDS: RGB color model, Video, Distortion, Bismuth, Video surveillance, Statistical analysis, Data modeling, Data analysis, Light sources, Niobium

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Proceedings Article | 17 March 2008 Paper

Image watermarking extraction using Fourier domain Wiener filter

Philip Birch, Marios Pavlidis, Ankit Panwar, Ozoemena Nnamadim, Ioannis Kypraios, Bhargav Mitra, Rupert Young, Chris Chatwin

Proceedings Volume 6977, 69770L (2008) https://doi.org/10.1117/12.777040

KEYWORDS: Digital watermarking, Filtering (signal processing), Image filtering, Digital image processing, Digital imaging, Feature extraction, Image processing, Fourier transforms, Electronic filtering, Optimal filtering

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Proceedings Article | 9 April 2007 Paper

Fully invariant multiple object recognition and tracking using MACH and Kalman filters

Peter Bone, Rupert Young, Chris Chatwin

Proceedings Volume 6574, 65740A (2007) https://doi.org/10.1117/12.711141

KEYWORDS: Filtering (signal processing), Target detection, Image filtering, Video, Distortion, Optical filters, Cameras, Sensors, Object recognition, Tolerancing

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SPIE Journal Paper | 1 July 2006

Position-, rotation-, scale-, and orientation-invariant multiple object recognition from cluttered scenes

Peter Bone, Rupert Young, Christopher Chatwin

OE, Vol. 45, Issue 07, 077203, (July 2006) https://doi.org/10.1117/12.10.1117/1.2227362

KEYWORDS: Image filtering, Sensors, Target detection, Distortion, Tolerancing, Optical filters, Optical engineering, Bone, Object recognition, Electronic filtering

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Proceedings Article | 17 April 2006 Paper

Detection of moving individuals in cluttered scenes

G. Christogiannopoulos, R. Young, C. Chatwin

Proceedings Volume 6245, 624504 (2006) https://doi.org/10.1117/12.664891

KEYWORDS: RGB color model, Filtering (signal processing), Head, Image segmentation, Cameras, Video, Electronic filtering, Linear filtering, Video surveillance, Detection and tracking algorithms

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Proceedings Article | 17 April 2006 Paper

Position, rotation, scale, and orientation invariant object tracking from cluttered scenes

Peter Bone, Rupert Young, Chris Chatwin

Proceedings Volume 6245, 624508 (2006) https://doi.org/10.1117/12.664048

KEYWORDS: Image filtering, Video, Distortion, Target detection, Filtering (signal processing), Optical filters, Electronic filtering, Cameras, Sensors, Tolerancing

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Proceedings Article | 17 April 2006 Paper

Three dimensional texture analysis of multidetector computed tomography images of the liver

Balaji Ganeshan, Rupert Young, Kenneth Miles, Chris Chatwin

Proceedings Volume 6245, 62450K (2006) https://doi.org/10.1117/12.664027

KEYWORDS: Liver, 3D image processing, Electronic filtering, Colorectal cancer, Image filtering, Fourier transforms, Gaussian filters, Computed tomography, Optical filters, Image analysis

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Proceedings Article | 28 March 2005 Paper

A MEMS-based star tracker system

Leo Lam, Rupert Young, Kevin Ryu, Wousik Kim, Sung Kim, Christopher Chatwin, Russ Brown

Proceedings Volume 5816, (2005) https://doi.org/10.1117/12.607978

KEYWORDS: Mirrors, Microelectromechanical systems, Stars, Electrodes, Optical correlators, Space mirrors, Optical filters, Finite element methods, Switches, Electronic filtering

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Proceedings Article | 28 March 2005 Paper

Position, rotation, scale, and orientation invariant multiple object recognition from cluttered scenes

Peter Bone, Rupert Young, Christopher Chatwin

Proceedings Volume 5816, (2005) https://doi.org/10.1117/12.602105

KEYWORDS: Image filtering, Sensors, Target detection, Distortion, Tolerancing, Filtering (signal processing), Object recognition, Image processing, Target recognition, Raster graphics

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Proceedings Article | 21 February 2005 Paper

Segmentation of moving objects from cluttered background scenes using a running average model

Georgios Christogiannopoulos, Philip Birch, Rupert Young, Christopher Chatwin

Proceedings Volume 5822, (2005) https://doi.org/10.1117/12.612035

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Proceedings Article | 21 February 2005 Paper

Fully invariant object recognition in cluttered scenes

Peter Bone, Ioannis Kypraios, Rupert Young, Christopher Chatwin

Proceedings Volume 5822, (2005) https://doi.org/10.1117/12.612034

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SPIE Journal Paper | 1 August 2004

Automated vehicle occupancy monitoring

Philip Birch, Rupert Young, Frederic Claret-Tournier, Christopher Chatwin

OE, Vol. 43, Issue 08, (August 2004) https://doi.org/10.1117/12.10.1117/1.1766300

KEYWORDS: Image segmentation, Facial recognition systems, Neural networks, Cameras, RGB color model, Image processing, Neurons, Roads, Glasses, Signal detection

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SPIE Journal Paper | 1 August 2004

Object recognition within cluttered scenes employing a hybrid optical neural network filter

Ioannis Kypraios, Rupert Young, Philip Birch, Christopher Chatwin

OE, Vol. 43, Issue 08, (August 2004) https://doi.org/10.1117/12.10.1117/1.1767194

KEYWORDS: Image filtering, Optical filters, Nonlinear filtering, Neurons, Neural networks, Hybrid optics, Object recognition, Chlorine, Distortion, Linear filtering

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Proceedings Article | 12 April 2004 Paper

Performance assessment of Unconstrained Hybrid Optical Neural Network (U-HONN) filter for object recognition tasks in clutter

Ioannis Kypraios, Rupert Young, Chris Chatwin

Proceedings Volume 5437, (2004) https://doi.org/10.1117/12.542058

KEYWORDS: Image filtering, Optical filters, Neural networks, Hybrid optics, Nonlinear filtering, Distortion, Chlorine, Artificial neural networks, Optical correlators, Composites

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Proceedings Article | 6 August 2003 Paper

A nonlinear training set superposition filter derived by neural network training methods for implementation in a shift-invariant optical correlator

Ioannis Kypraios, Rupert Young, Philip Birch, Christopher Chatwin

Proceedings Volume 5106, (2003) https://doi.org/10.1117/12.486334

KEYWORDS: Image filtering, Nonlinear filtering, Neural networks, Neurons, Optical filters, Superposition, Linear filtering, Optical correlators, Composites, Nonlinear optics

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SPIE Journal Paper | 1 July 2002

Optical design of a miniature Fourier transform lens system for a hybrid digital-optical correlator

Philip Birch, Gongde Li, Frederic Claret-Tournier, Rupert Young, David Budgett, Christopher Chatwin

OE, Vol. 41, Issue 07, (July 2002) https://doi.org/10.1117/12.10.1117/1.1484497

KEYWORDS: Fourier transforms, Spatial light modulators, Optical correlators, Optical design, Cameras, Digital signal processing, Optics manufacturing, Signal processing, Lens design, Beam expanders

Proceedings Article | 6 March 2002 Paper

Incoherent correlator system for satellite orientation control

Aristodemos Kouris, Rupert Young, Christopher Chatwin, Philip Birch

Proceedings Volume 4734, (2002) https://doi.org/10.1117/12.458420

KEYWORDS: Stars, Mirrors, Optical correlators, Satellites, Optical filters, Control systems, Sensors, Space operations, Electronic filtering, CCD cameras

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SPIE Journal Paper | 1 January 2002

Optical and electronic design of a hybrid digital optical correlator system

Philip Birch, Frederic Claret-Tournier, David Budgett, Rupert Young, Christopher Chatwin

OE, Vol. 41, Issue 01, (January 2002) https://doi.org/10.1117/12.10.1117/1.1428293

KEYWORDS: Spatial light modulators, Optical correlators, Cameras, Optical design, Optical filters, Digital signal processing, Fourier transforms, Tolerancing, Modulation, Signal processing

SPIE Journal Paper | 1 January 2002

Computer-generated complex filter for an all-optical and a digital optical hybrid correlator

Philip Birch, Rupert Young, Frederic Claret-Tournier, David Budgett, Christopher Chatwin

OE, Vol. 41, Issue 01, (January 2002) https://doi.org/10.1117/12.10.1117/1.1425785

Proceedings Article | 20 March 2001 Paper

Fully complex filter implementation in all-optical and hybrid digital/optical correlators

Philip Birch, Rupert Young, Frederic Claret-Tournier, Triantafillos Koukoulas, Sovira Tan, David Budgett, Christopher Chatwin

Proceedings Volume 4387, (2001) https://doi.org/10.1117/12.421148

KEYWORDS: Spatial light modulators, Optical correlators, Optical filters, Filtering (signal processing), Fourier transforms, Image filtering, Digital filtering, Digital signal processing, Phase only filters, Modulation

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SPIE Journal Paper | 1 October 2000

Electronic compensation for nonideal spatial light modulator characteristics

David Budgett, James Sharp, P. Tang, Rupert Young, Brian Scott, Christopher Chatwin

OE, Vol. 39, Issue 10, (October 2000) https://doi.org/10.1117/12.10.1117/1.1287932

KEYWORDS: Phase modulation, Spatial light modulators, Analog electronics, Phase shift keying, Video, Modulation, Phase shifts, Optical correlators, Liquid crystals, Fourier transforms

Proceedings Article | 24 May 2000 Paper

Optical correlator with fully complex liquid crystal filter

Philip Birch, Rupert Young, David Budgett, Triantafillos Koukoulas, Gongde Li, Frederic Claret-Tournier, Christopher Chatwin

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386854

KEYWORDS: Spatial light modulators, Modulation, Optical filters, Optical correlators, Liquid crystals, Nonlinear filtering, Phase shift keying, Complex systems, Binary data, Fourier transforms

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Proceedings Article | 31 March 2000 Paper

Hardware implementation details of a hybrid digital/optical correlator system

Rupert Young, Frederic Claret-Tournier, Gongde Li, Philip Birch, David Budgett, Triantafillos Koukoulas, Christopher Chatwin

Proceedings Volume 4043, (2000) https://doi.org/10.1117/12.381611

KEYWORDS: Spatial light modulators, Fourier transforms, Digital signal processing, Optical correlators, Lithium, Signal processing, Charge-coupled devices, Field programmable gate arrays, Tolerancing, Digital Light Processing

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Proceedings Article | 9 March 1999 Paper

Implementation and performance considerations of hybrid digital/optical correlator configurations

Rupert Young, Shiping Huang, Gongde Li, Triantafillos Koukoulas, Malcolm Heywood, David Budgett, Christopher Chatwin

Proceedings Volume 3715, (1999) https://doi.org/10.1117/12.341296

KEYWORDS: Spatial light modulators, Digital signal processing, Optical correlators, Fourier transforms, Binary data, Modulation, Pattern recognition, Optical filters, Signal processing, Sensors

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SPIE Journal Paper | 1 October 1998

Holographic characterization of epoxy resins at 351.1 nm

Maria Farsari, Shiping Huang, Rupert Young, Malcolm Heywood, Patrick Morrell, Christopher Chatwin

OE, Vol. 37, Issue 10, (October 1998) https://doi.org/10.1117/12.10.1117/1.601815

KEYWORDS: Diffraction, Photopolymers, Stereolithography, Epoxies, Holography, Ultraviolet radiation, Refractive index, Diffraction gratings, Polymerization, Four wave mixing

Proceedings Article | 22 May 1998 Paper

Nonlinear preprocessing operation for enhancing correlation filter performance in clutter

Lamia Jamal-Aldin, Rupert Young, Christopher Chatwin

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308917

KEYWORDS: Nonlinear filtering, Image filtering, Linear filtering, Tolerancing, Bandpass filters, Electronic filtering, Fourier transforms, Optical filters, Pattern recognition, Phase only filters

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Proceedings Article | 23 March 1998 Paper

In-class distortion tolerance, out-of-class discrimination, and clutter resistance of correlation filters that employ a space domain nonlinearity applied to wavelet-filtered input images

Lamia Jamal-Aldin, Rupert Young, Christopher Chatwin

Proceedings Volume 3386, (1998) https://doi.org/10.1117/12.304755

KEYWORDS: Nonlinear filtering, Image filtering, Linear filtering, Distortion, Tolerancing, Bandpass filters, Wavelets, Phase only filters, Optical filters, Image processing

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SPIE Journal Paper | 1 January 1998

Analysis of the maintenance of correlation plane peak localization despite severe frequency plane modulus disruption

Rupert Young, Christopher Chatwin

OE, Vol. 37, Issue 01, (January 1998) https://doi.org/10.1117/12.10.1117/1.601837

KEYWORDS: Fourier transforms, Electronic filtering, Optical filters, Interference (communication), Optical engineering, Phase only filters, Optical correlators, Signal to noise ratio, Diffraction, Image filtering

SPIE Journal Paper | 1 October 1997

Experimental assessment of a photorefractive bandpass joint transform correlator

Rupert Young, Christopher Chatwin

OE, Vol. 36, Issue 10, (October 1997) https://doi.org/10.1117/12.10.1117/1.601469

KEYWORDS: Optical correlators, Bandpass filters, Crystals, Image filtering, Fourier transforms, Gaussian filters, Optical filters, Optical engineering, Modulation, Photography

Proceedings Article | 15 March 1996 Paper

Computation of the forward and inverse Radon transform via the central slice theorem employing a nonscanning optical technique

Rupert Young, Christopher Chatwin

Proceedings Volume 2752, (1996) https://doi.org/10.1117/12.235664

KEYWORDS: Hough transforms, Fourier transforms, Radon transform, Computer simulations, Optical signal processing, Mirrors, Optical components, Image segmentation, Image processing, Computer generated holography

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Proceedings Article | 5 July 1995 Paper

Wiener filter: synthetic discriminant function for target identification

Christopher Chatwin, Ruikang Wang, Rupert Young

Proceedings Volume 2484, (1995) https://doi.org/10.1117/12.213056

KEYWORDS: Filtering (signal processing), Electronic filtering, Image filtering, Phase only filters, Distortion, Correlation function, Optical pattern recognition, Pattern recognition, Image classification, Fourier transforms

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SPIE Journal Paper | 1 October 1993

High-speed hybrid optical/digital correlator system

Rupert Young, Christopher Chatwin, Brian Scott

OE, Vol. 32, Issue 10, (October 1993) https://doi.org/10.1117/12.10.1117/12.146387

KEYWORDS: Spatial light modulators, Holograms, Video, Volume holography, Optical correlators, Charge-coupled devices, 3D image reconstruction, Fourier transforms, Multiplexing, Modulation

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Proceedings Article | 1 July 1992 Paper

Design and simulation of a synthetic discriminant function filter for implementation in an updateable photorefractive correlator

Rupert Young, Christopher Chatwin

Proceedings Volume 1701, (1992) https://doi.org/10.1117/12.138333

KEYWORDS: Optical filters, Image filtering, Optical correlators, Fourier transforms, Detection and tracking algorithms, Linear filtering, Modulation, Holograms, Optical pattern recognition, Spatial light modulators

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Showing 5 of 77 publications

Conference Committee Involvement (23)

Pattern Recognition and Prediction XXXVI

16 April 2025 | Orlando, Florida, United States

Pattern Recognition and Prediction XXXV

24 April 2024 | National Harbor, Maryland, United States

Pattern Recognition and Tracking XXXIV

3 May 2023 | Orlando, Florida, United States

Pattern Recognition and Tracking XXXIII

4 April 2022 | Orlando, Florida, United States

Pattern Recognition and Tracking XXXII

12 April 2021 | Online Only, Florida, United States

Pattern Recognition and Tracking XXXI

27 April 2020 | Online Only, California, United States

Pattern Recognition and Tracking XXX

15 April 2019 | Baltimore, MD, United States

Pattern Recognition and Tracking XXIX

18 April 2018 | Orlando, FL, United States

Pattern Recognition and Tracking XXVIII

12 April 2017 | Anaheim, CA, United States

Optical Pattern Recognition XXVII

20 April 2016 | Baltimore, MD, United States

Optical Pattern Recognition XXVI

22 April 2015 | Baltimore, MD, United States

Optical Pattern Recognition XXV

7 May 2014 | Baltimore, MD, United States

Optical Pattern Recognition XXIV

29 April 2013 | Baltimore, Maryland, United States

Optical Pattern Recognition XXIII

26 April 2012 | Baltimore, Maryland, United States

Optical Pattern Recognition XXII

28 April 2011 | Orlando, Florida, United States

Optical Pattern Recognition XXI

8 April 2010 | Orlando, Florida, United States

Optical Pattern Recognition XX

16 April 2009 | Orlando, Florida, United States

Optical Pattern Recognition XIX

17 March 2008 | Orlando, Florida, United States

Optical Pattern Recognition XVIII

9 April 2007 | Orlando, Florida, United States

Optical Pattern Recognition XVII

20 April 2006 | Orlando (Kissimmee), Florida, United States

Optical Pattern Recognition XVI

31 March 2005 | Orlando, Florida, United States

Optical Pattern Recognition XV

15 April 2004 | Orlando, Florida, United States

Optical Pattern Recognition XIV

24 April 2003 | Orlando, Florida, United States

Showing 5 of 23 Conference Committees

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