Stephen Weddell

Senior Visiting Fellow
Visiting Senior Fellow

PUBLICATIONS

Conference Papers
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Clare RM; Engler BE; Weddell SJ; Le Louarn M; Verinaud C, 2021, 'Prism matching for piston segmentation correction with adaptive optics systems on extremely large telescopes', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ54163.2021.9653433
2021
Hickman S; Weddell S; Clare R, 2020, 'Test bench demonstration of the geometric wavefront sensor', in Proceedings of SPIE - The International Society for Optical Engineering, http://dx.doi.org/10.1117/12.2561166
2020
Liu Y; Li X; Xue Y; Weddell S; Yang L; Mihaylova L, 2020, 'Outlier-robust schmidt-kalman filter using variational inference', in Proceedings of 2020 23rd International Conference on Information Fusion, FUSION 2020, http://dx.doi.org/10.23919/FUSION45008.2020.9190507
2020
Clare RM; Engler BE; Weddell SJ, 2020, 'Wavefront reconstruction with the cone sensor', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ51579.2020.9290735
2020
Liu J; Muruganandan VA; Clare R; Trujillo MCR; Weddell SJ, 2020, 'A Tip-Tilt Mirror Control System for Partial Image Correction at UC Mount John Observatory', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ51579.2020.9290543
2020
Taghinia P; Muruganandan VA; Clare RM; Weddell SJ, 2020, 'A Wavefront Sensorless Tip/Tilt Removal method for Correcting Astronomical Images', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ51579.2020.9290688
2020
Hickman S; Muruganandan VA; Weddell S; Clare R, 2020, 'Image Metrics for Deconvolution of Satellites in Low Earth Orbit', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ51579.2020.9290535
2020
Engler B; Le Louarn M; Vérinaud C; Weddell S; Clare R, 2019, 'Pyramid wavefront sensing in the presence of thick spiders', in AO4ELT 2019 - Proceedings 6th Adaptive Optics for Extremely Large Telescopes
2019
Engler B; Weddell S; Clare R, 2019, 'A digital prism-based wavefront sensor testbench', in AO4ELT 2019 - Proceedings 6th Adaptive Optics for Extremely Large Telescopes
2019
Mariappan A; Sanal Kumar VR; Anand V; Weddell S; Jeung IS, 2019, 'A conceptual method to recycle space debris into fuels and artificial soil in the ISS for numerous applications', in AIAA Propulsion and Energy Forum and Exposition, 2019, http://dx.doi.org/10.2514/6.2019-4157
2019
Engler B; Weddell S; Clare R, 2019, 'A Digital Prism Wavefront Sensor for Ground-Based Astronomical Image Correction', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ.2018.8634797
2019
Li X; Liu Y; Mihaylova L; Yang L; Weddell S; Guo F, 2019, 'Enhanced Multiple Model GPB2 Filtering Using Variational Inference', in FUSION 2019 - 22nd International Conference on Information Fusion
2019
Krishnamoorthy V; Shoorangiz R; Weddell SJ; Beckert L; Jones RD, 2019, 'Deep Learning with Convolutional Neural Network for detecting microsleep states from EEG: A comparison between the oversampling technique and cost-based learning', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 4152 - 4155, http://dx.doi.org/10.1109/EMBC.2019.8857588
2019
Shoorangiz R; Buriro AB; Weddell SJ; Jones RD, 2019, 'Detection and Prediction of Microsleeps from EEG using Spatio-Temporal Patterns', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 522 - 525, http://dx.doi.org/10.1109/EMBC.2019.8857962
2019
Weddell S; Clare R; Muruganandan VA; Lambert A, 2019, 'A Hybrid Adaptive Optics System for Space Situational Awareness', in AOIM X11, Delft, The Netherlands, presented at AOIM X11, Delft, The Netherlands, 21 October 2019
2019
Hickman S; Weddell S; Clare R, 2019, 'Image Correction with Curvature and Geometric Wavefront Sensors in Simulation and On-sky', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ48456.2019.8961022
2019
Clare RM; Weddell SJ; Louarn ML, 2019, 'Centroiding of Truncated Shack-Hartmann Laser Guide Star Images with Known Reference Images', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ48456.2019.8961005
2019
Pal S; Lambert A; Clare R; Weddell SJ, 2018, 'Wavefront sensor optimisation with ridgelets for astronomical image restoration', in International Conference Image and Vision Computing New Zealand, pp. 1 - 6, http://dx.doi.org/10.1109/IVCNZ.2017.8402470
2018
Engler B; Weddell S; Clare R, 2018, 'Wavefront sensing with prisms for astronomical imaging with adaptive optics', in International Conference Image and Vision Computing New Zealand, pp. 1 - 7, http://dx.doi.org/10.1109/IVCNZ.2017.8402471
2018
Buriro AB; Shoorangiz R; Weddell SJ; Jones RD, 2018, 'Ensemble learning based on overlapping clusters of subjects to predict microsleep states from EEG', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 3036 - 3039, http://dx.doi.org/10.1109/EMBC.2018.8512962
2018
Pal S; Clare R; Lambert A; Weddell SJ, 2018, 'Slope-based wavefront sensor optimisation with multi-resolution analysis', in Proceedings of SPIE - The International Society for Optical Engineering, http://dx.doi.org/10.1117/12.2312260
2018
Engler B; Weddell S; Le Louarn M; Clare R, 2018, 'Effects of the telescope spider on extreme adaptive optics systems with pyramid wavefront sensors', in Proceedings of SPIE - The International Society for Optical Engineering, http://dx.doi.org/10.1117/12.2310050
2018
Clare RM; Engler BE; Weddell S; Shatokhina I; Obereder A; Le Louarn M, 2017, 'Numerical evaluation of pyramid type sensors for extreme adaptive optics for the European Extremely Large Telescope', in Adaptive Optics for Extremely Large Telescopes, 2017 AO4ELT5
2017
Pal S; Lambert A; Weddell SJ, 2017, 'Practical application of the geometric wavefront sensor for adaptive optics', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ.2016.7804427
2017
Baseer A; Weddell SJ; Jones RD, 2017, 'Prediction of microsleeps using pairwise joint entropy and mutual information between EEG channels', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 4495 - 4498, http://dx.doi.org/10.1109/EMBC.2017.8037855
2017
Shoorangiz R; Weddell SJ; Jones RD, 2017, 'Bayesian multi-subject factor analysis to predict microsleeps from EEG power spectral features', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 4183 - 4186, http://dx.doi.org/10.1109/EMBC.2017.8037778
2017
Motha J; Bainbridge-Smith A; Weddell S, 2016, 'Cryptographic techniques in redundant number systems', in 2015 International Conference on Field Programmable Technology, FPT 2015, pp. 232 - 235, http://dx.doi.org/10.1109/FPT.2015.7393156
2016
Weddell S; Pal S; Lambert A, 2016, 'Curvature and geometric wavefront sensor sensitivity to secondary mirror obscuration', in Optics InfoBase Conference Papers, http://dx.doi.org/10.1364/AOMS.2016.AOW1B.2
2016
Pal S; Lambert A; Weddell S, 2016, 'Comparison of restoration methods for deconvolution from wavefront sensing (DWFS)', in Optics InfoBase Conference Papers, http://dx.doi.org/10.1364/AOMS.2016.AOT2C.3
2016
Shoorangiz R; Weddell SJ; Jones RD, 2016, 'Prediction of microsleeps from EEG: Preliminary results', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 4650 - 4653, http://dx.doi.org/10.1109/EMBC.2016.7591764
2016
Peimankar A; Weddell SJ; Jalal T; Lapthorn AC, 2016, 'Ensemble classifier selection using multi-objective PSO for fault diagnosis of power transformers', in 2016 IEEE Congress on Evolutionary Computation, CEC 2016, pp. 3622 - 3629, http://dx.doi.org/10.1109/CEC.2016.7744248
2016
Ayyagari SSDP; Jones RD; Weddell SJ, 2015, 'Optimized echo state networks with leaky integrator neurons for EEG-based microsleep detection', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 3775 - 3778, http://dx.doi.org/10.1109/EMBC.2015.7319215
2015
Frank K; Spearpoint M; Weddell S, 2014, 'Finding the probability of doors being open using a continuous position logger', in Fire Safety Science, pp. 969 - 982, http://dx.doi.org/10.3801/IAFSS.FSS.11-969
2014
Ayyagari SSDP; Jones RD; Weddell SJ, 2014, 'EEG-based event detection using optimized echo state networks with leaky integrator neurons', in 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014, pp. 5856 - 5859, http://dx.doi.org/10.1109/EMBC.2014.6944960
2014
Larocco J; Innes CRH; Bones PJ; Weddell S; Jones RD, 2014, 'Optimal EEG feature selection from average distance between events and non-events', in 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014, pp. 2641 - 2644, http://dx.doi.org/10.1109/EMBC.2014.6944165
2014
Keith T; Weddell SJ, 2013, 'The echo state network on the graphics processing unit', in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), pp. 96 - 107, http://dx.doi.org/10.1007/978-3-642-38658-9_9
2013
Knopp S; Bones P; Weddell S; Innes C; Jones R, 2013, 'A wearable device for measuring eye dynamics in real-world conditions', in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, pp. 6615 - 6618, http://dx.doi.org/10.1109/EMBC.2013.6611072
2013
Glass I; Butler APH; Butler PH; Bones PJ; Weddell SJ, 2013, 'Physiological gating of the MARS spectral micro CT scanner', in International Conference Image and Vision Computing New Zealand, pp. 317 - 322, http://dx.doi.org/10.1109/IVCNZ.2013.6727036
2013
Knopp SJ; Bones PJ; Weddell SJ; Innes CRH; Jones RD, 2012, 'A miniature head-mounted camera for measuring eye closure', in ACM International Conference Proceeding Series, pp. 313 - 318, http://dx.doi.org/10.1145/2425836.2425898
2012
Weddell SJ; Takaoka T; Read T; Candy R, 2012, 'Maximum subarray algorithms for use in optical and radio astronomy', in Proceedings of SPIE - The International Society for Optical Engineering, http://dx.doi.org/10.1117/12.928318
2012
Weddell SJ; Webb RY; Bones PJ, 2011, 'Simulating wide-field optical wavefront propagation through single-layer turbulence', in Optics InfoBase Conference Papers
2011
Weddell SJ; Webb RY; Bones PJ, 2011, 'Simulating wide-field optical wavefront propagation through single-layer turbulence', in Optics InfoBase Conference Papers
2011
Weddell SJ; Webb RY; Bones PJ, 2011, 'Simulating wide-field optical wavefront propagation through single-layer turbulence', in Optics InfoBase Conference Papers
2011
Weddell SJ; Howe JR, 2010, 'An optical testbench and atmospheric turbulence emulator for astronomical image restoration', in International Conference Image and Vision Computing New Zealand, http://dx.doi.org/10.1109/IVCNZ.2010.6148808
2010
Weddell SJ; Webb RY, 2008, 'The restoration of extended astronomical images using the spatially-variant point spread function', in 2008 23rd International Conference Image and Vision Computing New Zealand, IVCNZ, http://dx.doi.org/10.1109/IVCNZ.2008.4762100
2008
Weddell SJ; Webb RY, 2006, 'Dynamic artificial neural networks for centroid prediction in astronomy', in Proceedings - Sixth International Conference on Hybrid Intelligent Systems and Fourth Conference on Neuro-Computing and Evolving Intelligence, HIS-NCEI 2006, http://dx.doi.org/10.1109/HIS.2006.264951
2006
Journal articles
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Engler B; Le Louarn M; Vérinaud C; Weddell S; Clare R, 2022, 'Flip-flop modulation method used with a pyramid wavefront sensor to correct piston segmentation on ELTs', Journal of Astronomical Telescopes, Instruments, and Systems, vol. 8, http://dx.doi.org/10.1117/1.JATIS.8.2.021502
2022
Mariappan A; Kumar VRS; Weddell SJ; Muruganandan VA; Jeung IS, 2021, 'Theoretical studies on space debris recycling and energy conversion system in the International Space Station', Engineering Reports, vol. 3, http://dx.doi.org/10.1002/eng2.12317
2021
Weddell SJ; Ayyagari S; Jones RD, 2021, 'Reservoir computing approaches to microsleep detection', Journal of Neural Engineering, vol. 18, http://dx.doi.org/10.1088/1741-2552/abcb7f
2021
Ayyagari SSDP; Jones RD; Weddell SJ, 2021, 'Detection of microsleep states from the EEG: a comparison of feature reduction methods', Medical and Biological Engineering and Computing, vol. 59, pp. 1643 - 1657, http://dx.doi.org/10.1007/s11517-021-02386-y
2021
Pal S; Clare R; Lambert A; Weddell S, 2021, 'Multiscale optimization of the geometric wavefront sensor', Applied Optics, vol. 60, pp. 7536 - 7544, http://dx.doi.org/10.1364/AO.423536
2021
Buriro AB; Ahmed B; Baloch G; Ahmed J; Shoorangiz R; Weddell SJ; Jones RD, 2021, 'Classification of alcoholic EEG signals using wavelet scattering transform-based features', Computers in Biology and Medicine, vol. 139, http://dx.doi.org/10.1016/j.compbiomed.2021.104969
2021
Pike MD; Bose SK; Mallinson JB; Acharya SK; Shirai S; Galli E; Weddell SJ; Bones PJ; Arnold MD; Brown SA, 2020, 'Atomic scale dynamics drive brain-like avalanches in percolating nanostructured networks', Nano Letters, vol. 20, pp. 3935 - 3942, http://dx.doi.org/10.1021/acs.nanolett.0c01096
2020
Clare RM; Weddell SJ; Le Louarn M, 2020, 'Mitigation of truncation effects in elongated Shack–Hartmann laser guide star wavefront sensor images', Applied Optics, vol. 59, pp. 6431 - 6442, http://dx.doi.org/10.1364/AO.394751
2020
Peimankar A; Weddell SJ; Jalal T; Lapthorn AC, 2018, 'Multi-objective ensemble forecasting with an application to power transformers', Applied Soft Computing Journal, vol. 68, pp. 233 - 248, http://dx.doi.org/10.1016/j.asoc.2018.03.042
2018
Weddell SJ; Bones PJ, 2018, 'Wavefront prediction with reservoir computing for minimizing the effects of angular anisoplanatism', Applied Optics, vol. 57, pp. 7140 - 7151, http://dx.doi.org/10.1364/AO.57.007140
2018
Buriro AB; Shoorangiz R; Weddell SJ; Jones RD, 2018, 'Predicting Microsleep States Using EEG Inter-Channel Relationships', IEEE Transactions on Neural Systems and Rehabilitation Engineering, vol. 26, pp. 2260 - 2269, http://dx.doi.org/10.1109/TNSRE.2018.2878587
2018
Knopp SJ; Bones PJ; Weddell SJ; Jones RD, 2017, 'A software framework for real-time multi-modal detection of microsleeps', Australasian Physical and Engineering Sciences in Medicine, vol. 40, pp. 739 - 749, http://dx.doi.org/10.1007/s13246-017-0559-x
2017
Peimankar A; Weddell SJ; Jalal T; Lapthorn AC, 2017, 'Evolutionary multi-objective fault diagnosis of power transformers', Swarm and Evolutionary Computation, vol. 36, pp. 62 - 75, http://dx.doi.org/10.1016/j.swevo.2017.03.005
2017
Weddell SJ; Lambert AJ, 2014, 'Optical test-benches for multiple source wavefront propagation and spatiotemporal point-spread function emulation', Applied Optics, vol. 53, pp. 8205 - 8215, http://dx.doi.org/10.1364/AO.53.008205
2014
Weddell SJ; Lambert AJ, 2014, 'Optical test-benches for multiple source wavefront propagation and spatiotemporal point-spread function emulation', Applied Optics, vol. 53, pp. 8205 - 8215, http://dx.doi.org/10.1364/AO.53.008205
2014
Basavaraju RM; Akondi V; Weddell SJ; Budihal RP, 2014, 'Myopic aberrations: Simulation based comparison of curvature and Hartmann Shack wavefront sensors', Optics Communications, vol. 312, pp. 23 - 30, http://dx.doi.org/10.1016/j.optcom.2013.09.004
2014
Weddell SJ; Read T; Thaher M; Takaoka T, 2013, 'Maximum subarray algorithms for use in astronomical imaging', Journal of Electronic Imaging, vol. 22, http://dx.doi.org/10.1117/1.JEI.22.4.043011
2013
Weddell SJ; Webb RY, 2008, 'Reservoir computing for prediction of the spatially-variant point spread function', IEEE Journal on Selected Topics in Signal Processing, vol. 2, pp. 624 - 634, http://dx.doi.org/10.1109/JSTSP.2008.2004218
2008
Organisational units
lensSchool of Engineering & Information Technology