@article{article_303854, title={Investigation Of Chaotic Structure Of IrısPattern By Using Lyapunov Exponents}, journal={Mus Alparslan University Journal of Science}, volume={5}, pages={405–408}, year={2017}, DOI={10.18586/msufbd.303854}, author={Bayraktar, Hüsniye Kevser and Mutlu, Özlem and Koçal, Osman Hilmi}, keywords={chaos,chaoticanalysis,iris,lyapunovexponent}, abstract={ Chaos theory examines dynamic systems, complex and nonlineer structures. Defining and classifying objects in the nature are also topics of interest to engineering discipline. In this study, the chaotic structure of iris tissue, which is used extensively in biometric systems, has been investigated. Iris pattern was handled from a different point of view and the chaotic structure in the pseudo-periodic orbits of iris was uncovered. In this research, UBIRIS database is used for iris patterns. The one dimensional array, obtained from the iris image, was transferred to the phase space to visual analysis and Lyapunov exponents were calculated in the MATLAB environment via TISEAN package software to investigate the chaotic behavior. The results show that iris has a chaotic structure. }, number={1}, publisher={Mus Alparslan University}