Title :
A quality evaluation method of iris images sequence based on wavelet coefficients in "region of interest"
Author :
Zhu, Xiao-Dung ; Liu, Yuan-ning ; Ming, Xing ; Cui, Qing-liag
Author_Institution :
Coll. of Comput. Sci. & Technol., JiLin Univ., China
Abstract :
In this paper, a kind of analysis method using the wavelet coefficient in "region of interest (ROI)" is presented to evaluate the iris images sequence automatically. By use of Canny operator and fast Hough transform, the outer edge of the iris section is fast and accurately located. The ROI is determined according to human visual system property, at the same time, the image with acquisition deformation is filtered. Consequently, the quality evaluation factor is computed by means of the wavelet coefficient in corresponded ROI, then the iris images sequence quality is evaluated combining with the factors, such as the area of iris section and its ratio to the one of pupil section, and the experiment results indicate the correctness and validity of the method.
Keywords :
Hough transforms; eye; image recognition; image sequences; wavelet transforms; Canny operator; acquisition deformation; fast Hough transform; human visual system property; iris images sequence; pupil section; quality evaluation factor; quality evaluation method; region of interest; wavelet coefficient; wavelet coefficients; Character recognition; Frequency; Humans; Image quality; Image recognition; Image sequences; Iris recognition; Psychology; Visual system; Wavelet coefficients;
Conference_Titel :
Computer and Information Technology, 2004. CIT '04. The Fourth International Conference on
Print_ISBN :
0-7695-2216-5
DOI :
10.1109/CIT.2004.1357169
