Two New Methods for Locating Outer Edge of Iris - Advances in Image and Graphics Technologies - page 350

(a a) (b)

(c c) (d)

Fig. 10. a) Outer edge of iris
method of calculus c) Outer ed
iris by used the method of line

by used the method of Hough, b) Outer edge of iris by used
dge of iris by used the method of circle integral d) Outer edg
ear segment

d the
ge of

Table 1. The time of four methods

Locati
Hough
calcul
circle
linear

ion method

times

h 0.75

lus 0.437

integral 0.015

segment 0.008

The average times by us
The two methods of this ess

sing these four methods are 0.76s, 0.42s, 0.01s and 0.00
say have already increased the speed.

03s.

6 Conclusions

The results of implementin
with 1.73GHZ processor an
CASIA1.0 database consist
proposed two algorithms fo
eyelids and eyelash and unw

ng the location methods by OpenCV and c on a compu
nd 1 GB RAM have been reported. Algorithm is tested
ting of 756 images of 108 persons. The present study
or the iris localization which robust against disturbance
wanted edges.

uter
d on
has
s of