Dr. José F. López Profile

Dr. José F. López

at Univ de Las Palmas de Gran Canaria

SPIE Involvement:

Author | Editor

Publications (21)

Proceedings Article | 11 October 2018 Presentation

Setting up an autonomous hyperspectral flying platform for precision agriculture (Conference Presentation)

Aythami Salvador Rodriguez Valentin, Pablo Horstrand, José Fco. López , Sebastián López

Proceedings Volume 10792, 1079206 (2018) https://doi.org/10.1117/12.2503096

KEYWORDS: Agriculture, Sensors, Unmanned aerial vehicles, Inspection, Cameras, RGB color model, Vegetation, Software development, Spatial resolution, Earth observing sensors

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SPIE Journal Paper | 29 May 2015 Open Access

On the hardware implementation of the arithmetic elements of the pairwise orthogonal transform

Lucana Santos, Ian Blanes, Aday García, Joan Serra-Sagristà, José López, Roberto Sarmiento

JARS, Vol. 9, Issue 01, 097496, (May 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.097496

KEYWORDS: Field programmable gate arrays, Image compression, Digital signal processing, Hyperspectral imaging, Space operations, Multispectral imaging, Image quality standards, Satellites, Data compression, Data storage

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Proceedings Article | 17 November 2014 Paper

FPGA implementation of the hyperspectral Lossy Compression for Exomars (LCE) algoritm.

Aday García, L. Santos, S. López, G. Callicó, J. López, R. Sarmiento

Proceedings Volume 9247, 924705 (2014) https://doi.org/10.1117/12.2069493

KEYWORDS: Field programmable gate arrays, Image compression, Control systems, Algorithms, Hyperspectral imaging, Remote sensing, Signal processing, Sensors, Digital signal processing, Error analysis

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Proceedings Article | 15 October 2014 Paper

A novel highly-parallel algorithm for linearly unmixing hyperspectral images

Raúl Guerra, Sebastián López, Gustavo Callico, Jose López, Roberto Sarmiento

Proceedings Volume 9247, 92470H (2014) https://doi.org/10.1117/12.2068332

KEYWORDS: Hyperspectral imaging, Image processing, Signal to noise ratio, Reconstruction algorithms, Evolutionary algorithms, Computer simulations, Mathematical modeling, Image quality, Image filtering, Image analysis

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Proceedings Article | 22 May 2014 Paper

Efficient lossy compression implementations of hyperspectral images: tools, hardware platforms, and comparisons

Aday García, Lucana Santos, Sebastián López, Gustavo Callicó, Jose Lopez, Roberto Sarmiento

Proceedings Volume 9124, 912408 (2014) https://doi.org/10.1117/12.2051132

KEYWORDS: Field programmable gate arrays, Image compression, Hyperspectral imaging, Satellites, Algorithms, Sensors, Signal processing, Digital signal processing, Neodymium, Control systems

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Proceedings Article | 22 May 2014 Paper

On the acceleration of the N-FINDER algorithm for hyperspectral endmembers extraction

Raul Guerra, Sebastian López, Gustavo Callicó, Jose Lopez, Roberto Sarmiento

Proceedings Volume 9124, 91240H (2014) https://doi.org/10.1117/12.2050868

KEYWORDS: Hyperspectral imaging, Principal component analysis, Image processing, Evolutionary algorithms, Phase modulation, Signal to noise ratio, Data modeling, Feature extraction, Computer simulations, Algorithm development

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SPIE Journal Paper | 2 August 2013 Open Access

Lossy hyperspectral image compression on a graphics processing unit: parallelization strategy and performance evaluation

Lucana Falcon, Enrico Magli, Raffaele Vitulli, Antonio Nunez, Jose Lopez, Roberto Sarmiento

JARS, Vol. 7, Issue 01, 074599, (August 2013) https://doi.org/10.1117/12.10.1117/1.JRS.7.074599

KEYWORDS: Image compression, Hyperspectral imaging, Graphics processing units, Computer architecture, Error analysis, Quantization, Parallel computing, Image quality, Algorithms, Profiling

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Proceedings Article | 12 October 2011 Paper

Lossy hyperspectral image compression with state-of-the-art video encoder

Lucana Santos, Sebastian López, Gustavo Callicó, Jose F. López, Roberto Sarmiento

Proceedings Volume 8183, 81830G (2011) https://doi.org/10.1117/12.898523

KEYWORDS: Image compression, Hyperspectral imaging, Computer programming, Signal to noise ratio, Video, Video compression, Video coding, Algorithm development, Image quality standards, Standards development

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Proceedings Article | 3 May 2011 Paper

Performance analysis of the scalable video coding (SVC) extension of H.264/AVC for constrained scenarios

N. Suarez, Gustavo Callico, Sebastian Lopez, Jose Lopez, Roberto Sarmiento

Proceedings Volume 8067, 80670J (2011) https://doi.org/10.1117/12.888269

KEYWORDS: Scalable video coding, Video, Standards development, Video coding, On-screen displays, Spatial resolution, Signal to noise ratio, Temporal resolution, Computer programming, Lanthanum

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Proceedings Article | 28 May 2009 Paper

Survey of reconfigurable architectures for multimedia applications

T. Cervero, S. López, G. Callicó, F. Tobajas, V. de Armas, J. López, R. Sarmiento

Proceedings Volume 7363, 736303 (2009) https://doi.org/10.1117/12.821713

KEYWORDS: Multimedia, Field programmable gate arrays, Computer architecture, Switches, Data communications, Array processing, Computer programming, Process control, Signal processing, Video processing

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Proceedings Article | 28 May 2009 Paper

Anisotropic quality measurement applied to H.264 video compression

G. Callico, Sebastián Lopez, Salvador Gabarda, Elena Gil, Gabriel Cristobal, José Lopez, Roberto Sarmiento

Proceedings Volume 7363, 73630I (2009) https://doi.org/10.1117/12.821652

KEYWORDS: Image quality, Video compression, Anisotropy, Quality measurement, Video, Image compression, Image quality standards, Computer programming, Quantization, Visual system

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Proceedings Article | 10 May 2007 Paper

Toward the implementation of a baseline H.264/AVC decoder onto a reconfigurable architecture

S. López, A. Kanstein, J. López, M. Berekovic, R. Sarmiento, J.-Y. Mignolet

Proceedings Volume 6590, 65900A (2007) https://doi.org/10.1117/12.722042

KEYWORDS: Video, Embedded systems, Digital filtering, Video coding, Profiling, Computer programming, Control systems, Multimedia, Digital signal processing, Quantization

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Proceedings Article | 30 June 2005 Paper

A low-cost bidimensional smart pixel network for video coding operations

S. Lopez, G. Callico, J. Lopez, R. Sarmiento

Proceedings Volume 5837, (2005) https://doi.org/10.1117/12.608263

KEYWORDS: Discrete wavelet transforms, Image processing, Video coding, Multimedia, Prototyping, Wavelets, Computer programming, Control systems, Photodetectors, Video compression

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Proceedings Article | 30 June 2005 Paper

A quarter pixel precision motion estimation architecture for H.264/AVC video coding

S. Lopez, F. Tobajas, A. Villar, J. Bienes, V. de Armas, G. Callico, J. Lopez, R. Sarmiento

Proceedings Volume 5837, (2005) https://doi.org/10.1117/12.608240

KEYWORDS: Motion estimation, Computer architecture, Multiplexers, Video coding, Autoregressive models, Distortion, Signal processing, Image processing, Standards development, Field programmable gate arrays

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Proceedings Article | 30 June 2005 Open Access

Practical considerations for real-time super-resolution implementation techniques over video coding platforms

Gustavo Callico, Sebastian Lopez, Rafael Peset Llopis, Ramanathan Sethuraman, Antonio Nunez, Jose Lopez, Margarita Marrero, Roberto Sarmiento

Proceedings Volume 5837, (2005) https://doi.org/10.1117/12.608322

KEYWORDS: Intelligence systems, Algorithm development, Image processing, Video, Computer programming, Image quality, Super resolution, Image resolution, Motion estimation, Video surveillance

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Proceedings Article | 21 April 2003 Paper

0.25-µm technology arithmetic codec for mobile multimedia communicators

Alberto Alvarez, Sebastian Lopez, Jose Lopez, Roberto Sarmiento

Proceedings Volume 5117, (2003) https://doi.org/10.1117/12.499051

KEYWORDS: Computer programming, Image compression, Image processing, Multimedia, Wavelets, Data modeling, Telecommunications, Data compression, Prototyping, Image transmission

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Proceedings Article | 21 April 2003 Paper

State of the art in CMOS threshold logic VLSI gateimplementations and applications

Peter Celinski, Sorin Cotofana, Jose Lopez, Said Al-Sarawi, Derek Abbott

Proceedings Volume 5117, (2003) https://doi.org/10.1117/12.497792

KEYWORDS: Logic, Transistors, Molybdenum, Computer arithmetic, Capacitors, Very large scale integration, Picosecond phenomena, Switching, Binary data, Clocks

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Proceedings Article | 21 November 2001 Paper

Gallium arsenide multiplierless filter bank for two-dimensional discrete wavelet transform (2D-DWT) computation

Jose Lopez, S. Lalchand, Felix Tobajas, S. Lopez, Antonio Nunez, Roberto Sarmiento

Proceedings Volume 4591, (2001) https://doi.org/10.1117/12.449157

KEYWORDS: Discrete wavelet transforms, Gallium arsenide, Image compression, Image filtering, Linear filtering, Wavelets, Computer architecture, Very large scale integration, Video compression, Video

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Proceedings Article | 21 November 2001 Paper

Low-power high-speed threshold logic and its application to the design of novel carry lookahead adders

Peter Celinski, Jose Lopez, Said Al-Sarawi, Derek Abbott

Proceedings Volume 4591, (2001) https://doi.org/10.1117/12.449155

KEYWORDS: Logic, Clocks, Transistors, Logic devices, Amplifiers, Capacitors, Signal generators, Very large scale integration, Capacitance, Binary data

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Proceedings Article | 21 November 2001 Paper

Gallium arsenide processing elements for motion estimation full-search algorithm

Jose Lopez, P. Cortes, S. Lopez, Roberto Sarmiento

Proceedings Volume 4591, (2001) https://doi.org/10.1117/12.449139

KEYWORDS: Motion estimation, Gallium arsenide, Clocks, Image compression, Very large scale integration, Video compression, Chemical elements, Video, Data storage, Video processing

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Proceedings Article | 8 October 1999 Paper

Novel extension of neu-MOS techniques to neu-GaAs

Peter Celinski, Derek Abbott, Jose Lopez

Proceedings Volume 3893, (1999) https://doi.org/10.1117/12.368422

KEYWORDS: Transistors, Gallium arsenide, Capacitors, Molybdenum, Device simulation, Very large scale integration, Computer simulations, Composites, Microelectronics, Integrated circuit design

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