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Address event representation neuromorphics to epiretinal colour vision

Lookup NU author(s): Alex Jameson, Dr Graeme Chester, Professor Alex Yakovlev

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Abstract

Presented is a methodology of conversion of a conventional colour measure, e.g. 24-bit colour, to a neuromorphic representation for use with epiretinal prostheses. The conversion implemented, for a 4 by 4 image, within a field programmable gate array outputs three groups of timing signals. These three groups correspond to red (R), green (G) and blue (B) colour channels. In future work the channels will input to a retinal implant stimulator, via a receiver chip housed over the earlobe of a prosthesis recipient, to form biphasic pulses to drive electrodes stimulating the axons of colour specific retinal ganglion cells. A test setup was used to encode the hue pulses back to intensity to display test images on a VGA monitor for validation.


Publication metadata

Author(s): Jameson A, Chester EG, Yakovlev A

Publication type: Article

Publication status: Published

Journal: Electronics Letters

Year: 2013

Volume: 49

Issue: 3

Pages: 173-174

Print publication date: 31/01/2013

ISSN (print): 0013-5194

ISSN (electronic): 1350-911X

Publisher: IET

URL: http://dx.doi.org/10.1049/el.2012.2937

DOI: 10.1049/el.2012.2937


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