Comparative analysis of binarization methods for images of eye iris
DOI:
https://doi.org/10.18372/2225-5036.23.12094Keywords:
binarization, segmentation, iris of eye, fibre of storms, measure of contrastAbstract
The article analyzes the problem of binarization of the color image of the iris, for the task of user identification of access control systems. Modern versions of classical methods of binarization of images, whose model is described by a random irregular color field (brightness), are discussed. Preprocessing includes: aligning the overall brightness of the image, eliminating high-frequency noise and various artifacts on the source image, performing (if necessary) contrasting, binary and other functional transformations. But with all these transformations, one of the most important indicators should be the preservation of the maximum number of special elements of the initial information. Prospective directions of the further researches in the field of recognition of images of an iris of the eye are determined. As test data images from the open database of CASIO were used.References
J. Daugman, «Demodulation by complex-valued wavelets for stochastic pattern recognition», Int'l Journal of Wavelets, Multi-resolution and Information Processing, Vol. 1, № 1, p 1-17, 2003.
J. Sauvola, M. Petikainen, «Adaptive docu-ment image binarization», Pattern recognition 33, р. 225-236, 2000.
J. Bernsen, «Dynamic thresholding of grey-level images», Proceedings of the Eighth ICPR, pp. 1251-1255, 1986.
W Niblack, «An Introduction to Image Pro-cessing», Prentice-Hall, Englewood Cli!s, NJ, pp. 115-116, 1986.
S. Jarek, «Maximum Entropy Thresholding», [Online]. Available at:, http://ij-plugins.sf.net
А. Федоров, «Бинаризация черно –белых изображений: cостояние и перспективы развития», Электронный ресурс, Режим доступа: http://iu5.bms tu.ru/~philippovicha/ITS/IST4b/ITS4/Fyodorov.htm
В. Вдовин, А. Муравьёв, А. Певзнер, «Ме-тод адаптивной бинаризации растрового изобра-жения», Ярославский педагогический вестник, № 4, Том III, 2012.
V. Levenshtein, «Binary codes capable of cor-recting deletions, insertions and reversals», Sov. Phys. Dokl., 6, р. 707-710, 1966.
Л. Рябова, Є. Подгорний, Я. Мазур, «При-стрій для отримання зображення райдужної обо-лонки ока», Пат. 98230 України, МПК А61В 7/00, №u201410964 Заявл. 07.10.2014; Опубл.27.04.2015, Бюл. №8, 6 с.