Upload
avinash-singh
View
3.291
Download
0
Tags:
Embed Size (px)
Citation preview
Facial Recognition Technology
Avinash Kumar Singh
School Of Mechanical Engineering
Kalinga Institute Of Industrial Technology
Bhubaneswar (INDIA)
Avinash
Contents
What is Face Recognition?
How Does it Works?
Pros of Face Recognition system
Cons Of Face Recognition System
Where Can You Find It?
Recent improvements
On Your Part
Avinash
What is Face Recognition?
I
Facial recognition systems are computer-based security systems that are able to automatically detect and identify human faces.
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.
Keyboard and/orJoystick
Computer
Viewer
How Does It Works?
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 Standalone PTZ cam– Zoom out to overwatch the scene, and
zoom in to track down an intruding object;– Easy installation and an ideal operation
mode.
Template Matching Method
Store a template– Predefined: based on edges or regions
Deformable: based on facial contours (e.g., Snakes)
Templates are hand-coded (not learned) Use correlation to locate faces
Pros Of Face Recognition System
Typically used in security systems and can be compared to other biometrics such as fingerprint or eye iris recognition systems
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
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.
Intelligent Video Surveillance, Penpower Technology
Cons Of face Recognition System
Birds Flapping Birds Flapping
Crowd Crowd
Wavering Backgrounds Wavering Backgrounds
Rain Rain
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.”
System Configuration
Where Can You Find It?
Mostly installed at (indoor) exits, entrances, passages;
In addition to motion-sensitive analytics, also powered by face detection module for quick capture of human faces in the scene;
ATM machines-Face recognition at ATM machines prevents fraud identification and eliminates the usage of a personal identification number (PIN)
Mission Impossible. Facial Disguise?
-Only possible in Hollywood.
-Also too expensive.
Recent Improvement
In 2010, the performance of the latest face recognition algorithms were evaluated in the Face Recognition Grand Challenge (FRGC). High-resolution face images, 3-D face scans, and iris images were used in the tests. The results indicated that the new algorithms are 10 times more accurate than the face recognition algorithms of 2002 and 100 times more accurate than those of 1995. Some of the algorithms were able to outperform human participants in recognizing faces and could uniquely identify identical twins
Scene and Scenario Database Cameras: high sensitivity Illumination change: Cont. change v.s.
sudden change, indoor and outdoor, partial and overall;
Distance and range (view tilted from horizon 0~90o, object sized from tens of pixels to 90% of window. )
Questions Welcomed!!