Effects of compressive nonlinearity on insect-based motion detection

Sreeja Rajesh; Andrew Straw; David C. O'Carroll; Derek Abbott

doi:10.1117/12.598177

28 February 2005 Effects of compressive nonlinearity on insect-based motion detection

Sreeja Rajesh, Andrew Straw, David C. O'Carroll, Derek Abbott

Proceedings Volume 5649, Smart Structures, Devices, and Systems II; (2005) https://doi.org/10.1117/12.598177
Event: Smart Materials, Nano-, and Micro-Smart Systems, 2004, Sydney, Australia

Abstract

Motion detection and velocity estimation systems based on the study of insects tries to emulate the extraordinary visual system of insects with the aim of coming up with low power, computationally simple, highly efficient and robust devices. The Reichardt correlator model is one of the earliest and the most prominent models of motion detection based on insect vision. In this paper we try to extend the Reichardt correlator model to include an additional non-linearity which has been seen to be present in the fly visual system and we study its effect on the contrast dependance of the response and also try to understand its influence on pattern noise. Experiments are carried out by adding this compressive non-linearity at different positions in the model as has been postulated by previous works and comparison of the physiological data with modelling results is done.

Citation Download Citation

Sreeja Rajesh, Andrew Straw, David C. O'Carroll, and Derek Abbott "Effects of compressive nonlinearity on insect-based motion detection", Proc. SPIE 5649, Smart Structures, Devices, and Systems II, (28 February 2005); https://doi.org/10.1117/12.598177

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