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ISlT2003, Yokohama,Japan, June 29 -July 4,2003 On the Capacity of a Biometrical Identification System
 

Summary: ISlT2003, Yokohama,Japan, June 29 -July 4,2003
On the Capacity of a Biometrical Identification System
Fkans Willems, Ton Kalker, Jasper Goseling, and Jean-Paul Linnartz
Philips Research Laboratories, Eindhoven, The Netherlands
f.m.j.willemsQtue.nl ton.kalkerQieee.org j.goselingQieee.org j.p.linnartzQphilips.com
Abstract - We investigate fundamental properties
of biometrical identification systems. We focus on the
capacity, i.e. a measure for the number of individuals
that can be reliably identified. It can be expressed
using standard information-theoreticalconcepts.
I. MODELDESCRIPTION,RESULT
enrollment phase I identificationphase
We assume that there are M individuals with indices w E
{1,2,... ,M } . To each individual there corresponds a biomet-
rical data sequence xL = (x1,2 2 ,... ,Z L ) with components xi
for 1 = 1,L that assume a value from an alphabet X.Sequence
zL(w)is the sequence for individual w for w E {1,2,... ,M } .
It is supposed to be generated at random according to
Pr{XL(w) = x"} = &(ai),for all zLE X L , (1)
k 1 , L

  

Source: Al Hanbali, Ahmad - Department of Applied Mathematics, Universiteit Twente

 

Collections: Engineering