Mr. Francisco A. Gómez-Rodríguez Profile

Francisco A. Gómez-Rodríguez

at Univ de Sevilla

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Author

Publications (4)

Proceedings Article | 22 May 2007 Paper

Address-event-based platform for bioinspired spiking systems

A. Jiménez-Fernández, C. Luján, A. Linares-Barranco, F. Gómez-Rodríguez, M. Rivas, G. Jiménez, A. Civit

Proceedings Volume 6592, 659206 (2007) https://doi.org/10.1117/12.724156

KEYWORDS: Field programmable gate arrays, Prototyping, Computing systems, Neurons, Operating systems, Clocks, Telecommunications, Control systems, Signal processing, Receivers

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Address Event Representation (AER) is an emergent neuromorphic interchip communication protocol that allows a real-time virtual massive connectivity between huge number neurons, located on different chips. By exploiting high speed digital communication circuits (with nano-seconds timings), synaptic neural connections can be time multiplexed, while neural activity signals (with mili-seconds timings) are sampled at low frequencies. Also, neurons generate "events" according to their activity levels. More active neurons generate more events per unit time, and access the interchip communication channel more frequently, while neurons with low activity consume less communication bandwidth. When building multi-chip muti-layered AER systems, it is absolutely necessary to have a computer interface that allows (a) reading AER interchip traffic into the computer and visualizing it on the screen, and (b) converting conventional frame-based video stream in the computer into AER and injecting it at some point of the AER structure. This is necessary for test and debugging of complex AER systems. In the other hand, the use of a commercial personal computer implies to depend on software tools and operating systems that can make the system slower and un-robust. This paper addresses the problem of communicating several AER based chips to compose a powerful processing system. The problem was discussed in the Neuromorphic Engineering Workshop of 2006. The platform is based basically on an embedded computer, a powerful FPGA and serial links, to make the system faster and be stand alone (independent from a PC). A new platform is presented that allow to connect up to eight AER based chips to a Spartan 3 4000 FPGA. The FPGA is responsible of the network communication based in Address-Event and, at the same time, to map and transform the address space of the traffic to implement a pre-processing. A MMU microprocessor (Intel XScale 400MHz Gumstix Connex computer) is also connected to the FPGA to allow the platform to implement eventbased algorithms to interact to the AER system, like control algorithms, network connectivity, USB support, etc. The LVDS transceiver allows a bandwidth of up to 1.32 Gbps, around ~66 Mega events per second (Mevps).

Proceedings Article | 22 May 2007 Paper

AER image filtering

F. Gómez-Rodríguez, A. Linares-Barranco, R. Paz, L. Miró-Amarante, G. Jiménez, A. Civit

Proceedings Volume 6592, 659207 (2007) https://doi.org/10.1117/12.724216

KEYWORDS: Image filtering, Linear filtering, Computing systems, Field programmable gate arrays, Digital image processing, Image processing, Neurons, Retina, Digital filtering, Frame grabbers

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Proceedings Article | 16 September 2003 Paper

Smoke monitoring and measurement using image processing: application to forest fires

F. Gomez-Rodriguez, B. Arrue, A. Ollero

Proceedings Volume 5094, (2003) https://doi.org/10.1117/12.487050

KEYWORDS: Optical flow, Image segmentation, Wavelets, Image processing, Image analysis, Computing systems, Visualization, Wavelet transforms, Machine vision, Computer vision technology

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Proceedings Article | 16 July 2002 Paper

Aerial monitoring and measurement of forest fires

Luis Merino, Francisco Gomez-Rodriguez, Begona Arrue, Anibal Ollero

Proceedings Volume 4713, (2002) https://doi.org/10.1117/12.474435

KEYWORDS: 3D modeling, Image processing, Visualization, Cameras, Geographic information systems, 3D image processing, 3D metrology, Computing systems, Visual process modeling, Data modeling

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