Robust models for optic flow coding in natural scenes inspired by insect biology

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dc.contributor.authorBrinkworth, R.
dc.contributor.authorO'Carroll, D.
dc.contributor.editorGraham, L.J.
dc.date.issued2009
dc.description.abstractThe extraction of accurate self-motion information from the visual world is a difficult problem that has been solved very efficiently by biological organisms utilizing non-linear processing. Previous bio-inspired models for motion detection based on a correlation mechanism have been dogged by issues that arise from their sensitivity to undesired properties of the image, such as contrast, which vary widely between images. Here we present a model with multiple levels of non-linear dynamic adaptive components based directly on the known or suspected responses of neurons within the visual motion pathway of the fly brain. By testing the model under realistic high-dynamic range conditions we show that the addition of these elements makes the motion detection model robust across a large variety of images, velocities and accelerations. Furthermore the performance of the entire system is more than the incremental improvements offered by the individual components, indicating beneficial non-linear interactions between processing stages. The algorithms underlying the model can be implemented in either digital or analog hardware, including neuromorphic analog VLSI, but defy an analytical solution due to their dynamic non-linear operation. The successful application of this algorithm has applications in the development of miniature autonomous systems in defense and civilian roles, including robotics, miniature unmanned aerial vehicles and collision avoidance sensors.
dc.description.statementofresponsibilityRussell S. A. Brinkworth and David C. O’Carroll
dc.identifier.citationPLoS Computational Biology, 2009; 5(11):1-14
dc.identifier.doi10.1371/journal.pcbi.1000555
dc.identifier.issn1553-734X
dc.identifier.issn1553-7358
dc.identifier.orcidO'Carroll, D. [0000-0002-2352-4320]
dc.identifier.urihttp://hdl.handle.net/2440/57532
dc.language.isoen
dc.publisherPublic Library of Science
dc.relation.granthttp://purl.org/au-research/grants/arc/LP0667744
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0986683
dc.relation.granthttp://purl.org/au-research/grants/arc/LP0667744
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0986683
dc.source.urihttps://doi.org/10.1371/journal.pcbi.1000555
dc.subjectVisual Cortex
dc.subjectNerve Net
dc.subjectVisual Pathways
dc.subjectAnimals
dc.subjectDrosophila melanogaster
dc.subjectMotion Perception
dc.subjectBiomimetics
dc.subjectModels, Neurological
dc.subjectComputer Simulation
dc.titleRobust models for optic flow coding in natural scenes inspired by insect biology
dc.typeJournal article
pubs.publication-statusPublished

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