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BIometrIC modeL for authentICatIon
images have different positions of the eyelids. We observed that, on
average, the eyelid hides 10 pixels of the radius of the iris ρ
iris
of both
the upper and lower poles. With the elimination of 10 pixels of these
two poles, we keep most of the biometric features for verification and
we have more efficiency (cf. Chapter 10, Section 10.2.3) in compari-
son with other methods (cf. Chapter 6, Section 6.2).
e determination of the raster T(m,n) is as follows:
• Initialization of the raster T(m,n) to –1
• Calculation of the angle θ′, which determines the four points of
intersection (M
1
, M
2
, M
3
, and M
4
) between the ...