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