Face Recognition - Download as PowerPoint by liwenting


									Face Recognition

   By: Thanh Do
    Warren Ju
     What is Face Recognition?
   Facial recognition systems are computer-
    based security systems that are able to
    automatically detect and identify human
The development stage for facial
recognition began in the late 1980s and
commercially available systems were
made available in the 1990s. While many
people first heard about facial recognition
after September 11th, 2001, football fans
were introduced to it at the 2004 Super
                  How does it work?
   The first step for a facial
    recognition system is to recognize
    a human face and extract it fro the
    rest of the scene.

   Next, the system measures nodal
    points on the face, (such as the
    distance between the eyes, the
    shape of the cheekbones and
    other distinguishable features.)

   These nodal points are then
    compared to the nodal points
    computed from a database of
    pictures in order to find a match.
          Pros of Face recognition
   Anywhere that you can put a camera, you can potentially use a facial
    recognition system. Many cameras can be installed throughout a location to
    maximize security coverage without disrupting traffic flow.

   Face recognition systems can be installed to require a person to explicitly
    step up to a camera and get their picture taken, or to automatically survey
    people as they pass by a camera. The later mode allows for scanning of
    many people at the same time

   Video or pictures can be replayed through a facial recognition system for
    surveillance or forensics work after an event.

   Face scanning is not noticeable, can be done at a comfortable distance and
    does not require the user to touch anything.
        Cons of Face recognition
   Such systems may be fooled
    by hats, beards, sunglasses
    and face masks

   Even changes of lighting and
    camera angle can have a
    significant effect on the
    accuracy of 2D systems

   Some people view mass-scale
    facial recognition cameras as
    the ultimate “big brother.”
 “false positives” which means wrongly
  matching innocent people with photos in
  the database
 “false negatives” not catching people even
  when their photo is in the database
 if a subject's face is stored in the database,
  a disguise or a minor change in
  appearance or even an unusual facial
  expression can confuse the system.
         Mission Impossible?
Facial Disguise?
-Only possible in
-Also too expensive.
       What about other Biometric
   Though Iris Scan, Finger Print and Hand
    Geometry biometric system have proven to be
    effective, it requires cooperation from the person
    being scanned.
    Where can Face Recognition be
   ATM machines-Face recognition at ATM
    machines prevents fraud identification and
    eliminates the usage of a personal
    identification number (PIN)

   Many people who don't use banks use
    check cashing machines. Facial
    recognition could eliminate possible
    criminal activity.

  Voting Places-This eliminate voter
Ex: Mexican Government (Presidential
     Privacy V.S. National Security
   The main issue
    concerning face
    recognition is Privacy
    V.S. National Security

Giving your consent to
  be scanned in order
  to live in a safer
Last Video
  Show of hands, who
believe this system would
 work to catch terrorists
      and criminals?
      THE END

Big Brother is watching you!!

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