Iris Recognition


Nov 30, 2013 (4 years and 7 months ago)





Mohammed, Ashfaq Ahmed


Iris Recognition
is a

Technology which deals with identification
based on the human Iris.

It is considered to be the most accurate
biometric technology available today.

The Iris


is an internal organ of the body
which is visible from outside.

Located between the cornea and the lens
of the eyes.

The purpose of the iris is to control the
amount of light that enters the eye.


Iris (contd.)

The Iris (contd.)

The iris has complex random patterns

differ in each eye.

No two eyes can have the same iris
pattern, not even the two eyes of a
single individual.

The Iris (contd.)



The concept of Iris Recognition was first
proposed by Dr. Frank Burch in 1939.

It was first implemented in 1990 when Dr.
John Daugman created the algorithms for it.

These algorithms employ methods of
pattern recognition and some mathematical
calculations for iris recognition.

How it works?

The picture of the iris is captured by a
CCD camera attached on a wall, within a
distance of 5 to 25 inches or even within a
meter by more advanced cameras.

The image captured is then processed by a
special kind of software which isolates the
main iris patterns from the outer and the
inner boundaries of the iris.

How it works? (contd.)

The iris patterns from the processed
image are then encoded into a 512 bit code
called as the IrisCode, using Dr.
Daugman’s algorithms.

The IrisCode is encrypted as soon as it is
calculated to prevent it from theft.

How it works? (contd.)

The calculated IrisCode is then compared
to the codes stored in the database for any

The speed of searching the database can
be up to 10 thousand codes per second.

Thus, within a few seconds a person can
be identified without any user input or any
specific user action.


Many kinds of biometric technologies are
used like:

Fingerprint scanning

Face recognition

Voice recognition

Hand geometry scanning

Retinal scan

Comparisons (contd.)

These technologies have been useful but
none of these have always been as accurate
as iris recognition.

The high degree of randomness in iris
patterns makes iris recognition so accurate.


The largest application of iris recognition
has been in the aviation industry.

Many of the worlds largest airports like the
Heathrow airport of London, employ iris

The largest use of iris recognition is in
United Arab Emirates, where millions of
IrisCode comparisons are done each day at
all the air, land and sea ports.

Applications (contd.)

Other applications are as follows:

Information Security

Security in providing access to a


Security in providing access to a


Security in online business

Applications (contd.)

Security for government applications

Used by police departments and
government security agencies to keep a
record of criminals or suspects.


It will be difficult to capture an image of
handicap people sitting on wheel chair because
the cameras are usually attached on the wall
and capture an image up to a certain height.

The iris recognition systems are much
costlier than other biometric technologies.


The applications of iris recognition are rapidly
growing in the field of security, due to it’s
high rate of accuracy. This technology has the
potential to take over all other security
techniques, as it provides an hands
free, rapid
and reliable identification process.

The End