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Pattern generation using Reaction-Diffusion and Asymmetry Measure of Stripe Patterns

June 18, 2015 @ 2:00 pm - 3:00 pm

Speaker :  Mr. Sreerag S N

ABSTRACT:

A Reaction-Diffusion(R-D) system has been proposed as a mechanism to model the formation of various coat patterns in animals. The R-D system is a set of differential equations. We discuss a discretized version of the system and we show that different spatial patterns can be obtained by varying certain parameters of the R-D system.

There exists a bilateral symmetry in the left and right stripe patterns of animals from zebrafish to tigers. However, in most of the animals there is a deviation from perfect symmetry. This asymmetry may be due to stress conditions during the development of the animal. We propose a method to measure the asymmetry by taking difference of the areas of the stripes in left and right sides of an individual zebrafish. We compare this method with Short Time Fourier Transform(STFT) based method which was proposed earlier to measure the asymmetry in tigers. The area based method is found to be more reliable than STFT based method to measure the asymmetry of zebrafish.

Details

Date:
June 18, 2015
Time:
2:00 pm - 3:00 pm
Event Category:

Venue

ESB 244

Organizer

Prof.R Aravind
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