A fast iris location method based on combined coarse-and fine-treatment
Yongjun Li · Journal of Lanzhou University of Technology · 2011
Iris location was introduced as an important process of iris identification and its speed and accuracy would determine the performance of the iris recognition system as a whole.According to the characteristic of the iris image,a fast coarse and fine combine iris location method was presented.According to the regularity of the grayscale distribution of the iris image,the center,inner-and outer-radius of the iris were coarsely located and the relative parameters of the iris image were determined first.Then,the iris was made binary-coded and the Canny operator was is used to detect the edge of the iris image.Finally Hough transform was used to localize the inner and outer edges of the iris precisely.It was shown by experimental result that this algorithm effectively improved the speed and accuracy of the iris positioning.