Face Recognition

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Face Recognition

• By Thanh Do
• Warren Ju

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What is Face Recognition?

• Facial recognition systems are computer-based
  security systems that are able to automatically
  detect and identify human faces.

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• 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 Bowl.

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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.

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Video
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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.

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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.

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Effective?

• 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.

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Mission Impossible?

• Facial Disguise?
• -Only possible in Hollywood.
• -Also too expensive.

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What about other Biometric systems?

• Though Iris Scan, Finger Print and Hand Geometry
  biometric system have proven to be effective, it
  requires cooperation from the person being
  scanned.

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Where can Face Recognition be found?

• 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 fraud.
• Ex Mexican Government (Presidential Election)

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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 place.

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Last Video
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Show of hands, who believe this system
would work to catch terrorists and criminals?
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THE END

• Big Brother is watching you!!