Prof. Pier Luigi Dragotti Profile

Prof. Pier Luigi Dragotti

Lecturer at Imperial College London

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Author

Publications (16)

Proceedings Article | 9 August 2023 Presentation + Paper

Multimodal image registration and mosaicking of artworks: an approach based on mutual information

Maria Eugenia Villafane, Nathan Daly, Christine Kimbriel, Catherine Higgitt, Pier Luigi Dragotti

Proceedings Volume 12620, 1262004 (2023) https://doi.org/10.1117/12.2673427

KEYWORDS: Image registration, Image restoration, Image enhancement, Image processing, Potassium, Lead, Chemical elements, Image resolution, Image analysis, Medical imaging

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SPIE Journal Paper | 11 March 2022 Open Access

Comparing synthetic refocusing to deconvolution for the extraction of neuronal calcium transients from light fields

Carmel Howe, Peter Quicke, Pingfan Song, Herman Verinaz-Jadan, Pier Luigi Dragotti, Amanda Foust

NPh, Vol. 9, Issue 04, 041404, (March 2022) https://doi.org/10.1117/12.10.1117/1.NPh.9.4.041404

KEYWORDS: Deconvolution, Calcium, Luminescence, Reconstruction algorithms, 3D image reconstruction, Dendrites, Neurons, 3D image processing, Neurophotonics, Interference (communication)

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SPIE Journal Paper | 28 August 2020 Open Access

Subcellular resolution three-dimensional light-field imaging with genetically encoded voltage indicators

Peter Quicke, Carmel Howe, Pingfan Song, Herman Jadan, Chenchen Song, Thomas Knöpfel, Mark Neil, Pier Luigi Dragotti, Simon Schultz, Amanda Foust

NPh, Vol. 7, Issue 03, 035006, (August 2020) https://doi.org/10.1117/12.10.1117/1.NPh.7.3.035006

KEYWORDS: Signal to noise ratio, Deconvolution, 3D image processing, Image resolution, Luminescence, Dendrites, Point spread functions, Neurophotonics, Microscopes, Microlens

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Proceedings Article | 9 September 2019 Paper

Diffusion source detection in a network using partial observations

Roxana Alexandru, Pier Luigi Dragotti

Proceedings Volume 11138, 111380L (2019) https://doi.org/10.1117/12.2529418

KEYWORDS: Detection and tracking algorithms, Diffusion, Mathematical modeling, Social networks, Algorithm development, Inverse problems

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Proceedings Article | 26 September 2017 Presentation

Detecting neuronal activity from calcium imaging data using FRI methods (Conference Presentation)

Stephanie Reynolds, Jon Oñativia, Simon Schultz, Pier Luigi Dragotti

Proceedings Volume 10394, 103940Z (2017) https://doi.org/10.1117/12.2274043

KEYWORDS: Signal detection, Two photon imaging, Neuroimaging

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Proceedings Article | 27 September 2016 Presentation + Paper

Capturing the plenoptic function in a swipe

Michael Lawson, Mike Brookes, Pier Luigi Dragotti

Proceedings Volume 9971, 99710O (2016) https://doi.org/10.1117/12.2236981

KEYWORDS: Camera shutters, Cameras, Image processing, Point spread functions, Distortion, Information fusion, Consumer electronics, Distance measurement, Image segmentation, Switches

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Proceedings Article | 24 August 2015 Paper

Higher-order graph wavelets and sparsity on circulant graphs

Madeleine Kotzagiannidis, Pier Luigi Dragotti

Proceedings Volume 9597, 95971E (2015) https://doi.org/10.1117/12.2192003

KEYWORDS: Wavelets, Signal processing, Image processing, Social networks, Denoising, Image segmentation, Matrices, Data modeling, Nonlinear optics, Radon

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Proceedings Article | 26 September 2013 Paper

Approximate Strang-Fix: sampling infinite streams of Diracs with any kernel

Pier Luigi Dragotti, Jon Oñativia, Antonio Urigüen, Thierry Blu

Proceedings Volume 8858, 88580Y (2013) https://doi.org/10.1117/12.2023249

KEYWORDS: Reconstruction algorithms, Signal to noise ratio, Fourier transforms, Detection and tracking algorithms, Detection theory, Interference (communication), Algorithms, Signal detection, Statistical analysis, Electronics engineering

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Proceedings Article | 24 September 2011 Paper

Centralized and interactive compression of multiview images

Andriy Gelman, Pier Luigi Dragotti, Vladan Velisavljević

Proceedings Volume 8135, 81350J (2011) https://doi.org/10.1117/12.895982

KEYWORDS: Discrete wavelet transforms, Image compression, Computer programming, Cameras, Image segmentation, Wavelet transforms, Data compression, Quantization, Imaging arrays, Animal model studies

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Proceedings Article | 20 September 2007 Paper

Distributed video coding based on sampling of signals with finite rate of innovation

Varit Chaisinthop, Pier Luigi Dragotti

Proceedings Volume 6701, 67011C (2007) https://doi.org/10.1117/12.733234

KEYWORDS: Video coding, Neodymium, JPEG2000, Computer programming, Discrete wavelet transforms, Error analysis, Video, Wavelets, Adaptive optics, Mobile devices

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Proceedings Article | 20 September 2007 Paper

Image representation and compression using directionlets

Vladan Velisavljević, Baltasar Beferull-Lozano, Martin Vetterli, Pier Luigi Dragotti

Proceedings Volume 6701, 67010N (2007) https://doi.org/10.1117/12.730454

KEYWORDS: Transform theory, Image segmentation, Image compression, Visualization, Wavelets, Image quality, Visual compression, Quantization, Image filtering, Image processing algorithms and systems

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Proceedings Article | 17 September 2005 Paper

Exact sampling results for 1D and 2D signals with finite rate of innovation using Strang-Fix conditions and local reconstruction algorithms

Pier Dragotti

Proceedings Volume 5914, 59140Y (2005) https://doi.org/10.1117/12.616903

KEYWORDS: Reconstruction algorithms, Fourier transforms, Electronic filtering, Statistical analysis, Signal processing, Wavelets, Filtering (signal processing), Composites, Optical filters, Linear filtering

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Proceedings Article | 13 November 2003 Paper

Discrete directional wavelet bases and frames: analysis and applications

Pier Luigi Dragotti, Vladan Velisavljevic, Martin Vetterli, Baltasar Beferull-Lozano

Proceedings Volume 5207, (2003) https://doi.org/10.1117/12.506741

KEYWORDS: Wavelets, Wavelet transforms, Image processing, Denoising, Image filtering, Matrices, Image denoising, Nonlinear filtering, Algorithm development, Cameras

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Proceedings Article | 13 November 2003 Paper

Resolution enhancement and sampling with wavelets and footprints

Pier Luigi Dragotti, Martin Vetterli

Proceedings Volume 5207, (2003) https://doi.org/10.1117/12.504724

KEYWORDS: Wavelets, Resolution enhancement technologies, Reconstruction algorithms, Algorithm development, Wavelet transforms, Algorithms, Electronic filtering, Filtering (signal processing), Interference (communication), Signal to noise ratio

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Proceedings Article | 23 June 2003 Paper

Discrete directional wavelet bases for image compression

Pier Dragotti, Vladan Velisavljevic, Martin Vetterli, Baltasar Beferull-Lozano

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.509905

KEYWORDS: Wavelets, Wavelet transforms, Image processing, Denoising, Image compression, Matrices, Image filtering, Image denoising, Nonlinear filtering, Algorithm development

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Proceedings Article | 4 December 2000 Paper

Shift-invariant Gibbs-free denoising algorithm based on wavelet transform footprints

Pier Dragotti, Martin Vetterli

Proceedings Volume 4119, (2000) https://doi.org/10.1117/12.408672

KEYWORDS: Wavelets, Denoising, Wavelet transforms, Associative arrays, Signal processing, Filtering (signal processing), Algorithms, Signal to noise ratio, Linear filtering, Reconstruction algorithms

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Showing 5 of 16 publications

Conference Committee Involvement (2)

Wavelets and Sparsity XV

26 August 2013 | San Diego, California, United States

Wavelets XII

26 August 2007 | San Diego, California, United States

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