Inter-spike-intervals analysis of AER Poisson-like generator hardware |
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Authors: | A. M. D. G. A. B. |
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Affiliation: | aArquitectura y Tecnología de Computadores. Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain;bInstitute of Neuroinformatics. UNI—ETH Zürich, Winterthurerstrasse 190, CH 8057 Zurich, Switzerland;cInstituto de Microelectrónica de Sevilla. CSIC, Av. Reina Mercedes s/n. Edificio CICA. 41012 Sevilla, Spain |
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Abstract: | Address–Event–Representation (AER) is a communication protocol for transferring images between chips, originally developed for bio-inspired image-processing systems. Such systems may consist of a complicated hierarchical structure with many chips that transmit images among them in real time, while performing some processing (for example, convolutions). In developing AER-based systems it is very convenient to have available some means of generating AER streams from on-computer stored images. Rank order coding (ROC) and Poisson rate coding are the extremes of spikes coding. In this paper, we present a pseudo-random hardware method for generating AER streams in real time from a sequence of images stored in a computer's memory. The Kolmogorov–Smirnov test has been applied to quantify that this method follows a Poisson distribution of the spikes. A USB–AER board, developed by our RTCAR group, have been used for the measurements. An example scenario of use under the EU CAVIAR project is presented. |
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Keywords: | Bio-inspired Neuro-inspired AER LFSR Poisson FPGA USB |
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