Invariant visual object recognition: biologically plausible approaches

Biological cybernetics
Leigh Robinson, E T Rolls

Abstract

Key properties of inferior temporal cortex neurons are described, and then, the biological plausibility of two leading approaches to invariant visual object recognition in the ventral visual system is assessed to investigate whether they account for these properties. Experiment 1 shows that VisNet performs object classification with random exemplars comparably to HMAX, except that the final layer C neurons of HMAX have a very non-sparse representation (unlike that in the brain) that provides little information in the single-neuron responses about the object class. Experiment 2 shows that VisNet forms invariant representations when trained with different views of each object, whereas HMAX performs poorly when assessed with a biologically plausible pattern association network, as HMAX has no mechanism to learn view invariance. Experiment 3 shows that VisNet neurons do not respond to scrambled images of faces, and thus encode shape information. HMAX neurons responded with similarly high rates to the unscrambled and scrambled faces, indicating that low-level features including texture may be relevant to HMAX performance. Experiment 4 shows that VisNet can learn to recognize objects even when the view provided by the object changes ...Continue Reading

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Citations

Jan 16, 2016·Current Opinion in Neurobiology·Sidney R Lehky, Keiji Tanaka
Jan 30, 2018·Frontiers in Computational Neuroscience·Marcel van Gerven
Nov 7, 2019·Proceedings. Biological Sciences·Ahamed Miflah Hussain IsmailIsabelle Mareschal

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Methods Mentioned

BETA
feature extraction

Software Mentioned

VisNet
VisNet2
HMAX

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