Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/57532
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Robust models for optic flow coding in natural scenes inspired by insect biology
Author: Brinkworth, R.
O'Carroll, D.
Citation: PLoS Computational Biology, 2009; 5(11):1-14
Publisher: Public Library of Science
Issue Date: 2009
ISSN: 1553-734X
1553-7358
Statement of
Responsibility: 
Russell S. A. Brinkworth and David C. O’Carroll
Abstract: The 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.
Keywords: Visual Cortex; Nerve Net; Visual Pathways; Animals; Drosophila melanogaster; Motion Perception; Biomimetics; Models, Neurological; Computer Simulation
RMID: 0020094625
DOI: 10.1371/journal.pcbi.1000555
Grant ID: http://purl.org/au-research/grants/arc/LP0667744
http://purl.org/au-research/grants/arc/DP0986683
Appears in Collections:Molecular and Biomedical Science publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.