BIOMETRICS: FACIAL RECOGNITION TECHNOLOGY - Classweb

spectacularscarecrowAI and Robotics

Nov 17, 2013 (3 years and 4 months ago)

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BIOMETRICS: FACIAL
RECOGNITION
TECHNOLOGY



By Matthew Willert

PUAD 620


OUTLINE


WHAT IS BIOMETRICS?


WHAT IS FACIAL RECOGNITION
TECHNOLOGY?


CONTROVERSY


MY OPINION OF THIS TECHNOLOGY


QUESTIONS????????

WHAT IS BIOMETRICS?



BIOMETRICS


any automatically
measurable
,
robust

and
distinctive

physical
characteristic or personal trait that can be
used to identify an individual or verify the
claimed identity of an individual.

TWO MAIN USES

1) IDENTFICATION



-
figure out “Who is X?”



-
accomplished by system performing a

“one
-
to
-
many” search

2) VERIFICATION



-
answer the question “Is this X?”



-
accomplished by the system performing

a “one
-
to
-
one” search

TYPES OF BIOMETRICS

Iris Scanning


-
measures the iris patter in the colored part
of the eye

Retinal Scan


-
measures the blood vessel patterns in the
back of the eye


TYPES OF BIOMETRICS

Voice Recognition


-
measures the vocal characteristics of a
person using a specific phrase

Finger Printing



-
measures the unique pattern of lines on a
persons finger

FACIAL RECOGNITION


Facial recognition is a form of computer
vision that uses faces to attempt to identify
a person or verify a person’s claimed
identity. Regardless of specific method
used, the facial recognition is accomplished
in a five step process.

FIVE STEP PROCESS (STEP 1)

ACQUIRING THE IMAGE OF AN
INDIVIDUALS FACE

2 WAYS TO AQUIRE IMAGE

1)Digitally scan an existing photograph

2)Acquire a live picture of a subject


FIVE STEP PROCESS (STEP 2)

LOCATE IMAGE OF FACE


-
software is used to locate the faces in the
image that has been obtained


FIVE STEP PROCESS (STEP 2)

FIVE STEP PROCESS (STEP 3)

ANALYSIS OF FACIAL IMAGE


-
software measures face according to is
peaks and valleys (nodal points)


-
focuses on the inner region of the face
known as the “golden triangle”


-
nodal points are used to make a face print

FIVE STEP PROCESS (STEP 4)

COMPARISON


-
the face print created by the software is
compared to all face prints the system has
stored in its database.

FIVE STEP PROCESS (STEP 5)

MATCH OR NO MATCH


-
software decides whether or not any
comparisons from step 4 are close enough
to declare a possible match

FINAL STEP

THE HUMAN OPERATOR


CONTROVERSY

FALSE POSITIVES


-
FACIAL RECOGNITION VENDOR
TEST 2000


-
PALM BEACH INTERNATIONAL
AIRPORT


-
FACIAL RECOGNITION VENDOR
TEST 2002


CONTROVERSY

VIOLATION OF CONTITUTION RIGHT
AGAINST UNREASONABLE SEARCH?

United States v. Dionisio
, 410 U.S. 1, 14 (1973)


-
person does not have a reasonable expectation of
privacy of those physical characteristics that are
constantly exposed to the public such as one’s
facial features, voice and handwriting


CONTROVERSY

THE BORDER EXCEPTION


-
the fourth amendment recognizes the
longstanding right of the sovereign to
protect itself by stopping and examining
persons and property crossing into this
country





MY THOUGHTS ON FACIAL
RECOGNITION TECHNOLGY

REVIEW


WHAT IS BIOMETRIC?


WHAT IS FACIAL RECOGNTION
TECHNOLOGY?


CONTROVERSY


MY OPINION



QUESTIONS??????