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Bio-inspired quantization

Abstract : This paper introduces a novel retina-inspired sparse representation which is applied to temporally constant 2D inputs. This architecture consists of the recently released retina-inspired filtering which mimics the transformation of the visual stimulus into current as it takes place in the retina. This transform is very redundant. As a result, we propose the Perfect Leaky Integrate and Fire (Perfect-LIF) as a model which sparsifies the over-complete retina-inspired decomposition mimicking the spike generation mechanisms of the neurons. The Perfect-LIF is a thresholding function based on a time-depended deadzone. Numerical results show the efficiency of our architecture which provides almost equivalent reconstruction results between the over-complete and the sparse representation of the input image.
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https://hal.archives-ouvertes.fr/hal-01562644
Contributor : Lionel Fillatre <>
Submitted on : Tuesday, June 4, 2019 - 4:12:34 PM
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Effrosyni Doutsi, Lionel Fillatre, Marc Antonini, Julien Gaulmin. Bio-inspired quantization. XXVIeme Colloque GRETSI, Sep 2017, Juan-les-Pins, France. ⟨hal-01562644⟩

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