Blob Analysis Key To Next Generation Computerized Lie Detectors

Computer-based lie detectors are in the Homeland Security budget this year. A $3.5 million grant has been given to Rutgers scientists led by Dimitris Metaxas, director at the Center of Compuational Biomedicine Imaging and Modeling. They are researching how body movements, such as shoulder shrugs, hand gestures or slight changes in facial expression, may indicate that a subject is lying.

The system will capture these images digitally, and have the computer provide real-time feedback on whether a subject is telling the truth. It is hoped that by tracking the faces and hands of an individual, objective behavioral indicators of deception can be isolated, extracted and synthesized - accurately detecting human deception.


(From Blob Analysis Paper [pdf])

"Blob analysis" refers to using computer systems to picture essential elements (hands and faces) and track them. After extracting the hand and face regions from an image sequence, the system computes elliptical "blobs" identifying candidates for the face and hands. From the blobs, the left hand, right hand and face can be continuously tracked throughout a session. From positions and movements of the hands and face further inferences about the torso and the relation of each body part to other people and objects can be made. This allows the identification of gestures, posture and other body expressions.


(From Blob Analysis Paper [pdf])

Two theories guide the development of automated systems for detecting deception through identifying agitated and controlled behavior - Interpersonal Deception Theory (IDT) and Expectancy Violations Theory (EVT). IDT states that deception is a dynamic process. Deception is portrayed as a game of moves and countermoves where the deceiver adjusts the message in response to the perceived trust or suspicion of the receiver. EVT is concerned with what nonverbal and verbal behavior patterns are considered normal or expected, what behaviors constitute violations of expectations, and what consequences violations create.

The modern lie detector was invented by Dr. William M. Marston in 1917. The machine was also called a polygraph - literally "many writings", referring to the method of recording several physiological responses at the same time. He also wrote under the pen name Charles Moulton - creating the Wonder Woman comic strip. Wonder Woman, as you may recall, had a magic lasso that caused anyone she caught with it to tell the absolute truth.

Lie detectors entered science fiction as well, in the form of the truth meter from Robert Heinlein's 1954 juvenile classic The Star Beast, and the Veridicator in H. Beam Piper's fine novel Little Fuzzy:

There was a bright conical helmet on his head, and electrodes had been clamped to various portions of his anatomy. On the wall behind him was a circular screen which ought to have been a calm turquoise blue, but which was flickering from dark blue through violet to mauve. That was simple nervous tension and guilt and anger at the humiliation of being subjected to veridicated interrogation.
(Read more about the Veridicator)

Read more at ZDnet and in this paper - Blob Analysis of the Head and Hands: A Method for Deception Detection.

Scroll down for more stories in the same category. (Story submitted 9/12/2005)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 7 )

Related News Stories - (" Surveillance ")

Adversarial Patches Trick Computer Vision
'The surveillance cameras can all see it, but then they forget they’ve seen it.' - William Gibson, 2010.

FLIR Black Hornet 3 Palm-sized Drone
These drones can provide situational awareness beyond visual line-of-sight capability.

Ionocraft Drone Powered By Electrohydrodynamic Thrust
'He saw one hiss by him as he rounded the corner, trailing a short whip antenna...' - Neal Stephenson, 1995.

UK Police AI To Stop Criminals Before They Strike
'... the computing mechanisms that studied and restructured the incoming material.' - Philip K. Dick, 1956.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Datagrid Model Generation Perfect For Eternal Cities Of Science Fiction
'... there was enough flexibility to allow for wide variation.

Kazahk Ironist Protester Arrested For Blank Sign Protest
'...a man carried a white rectangular sign, blank on both sides.'

Bitcoin Surges Again, To $7,000
'... electronic, private cash, unbacked by any government, untraceable, completely anonymous.'

China Develops Taste Testing Robots
'Install taste buds in the end of one tentacle...'

North Sea Stone Age Reconstruction And Philip K Dick
'Your Dip digs back into antiquity. Rome. Greece. Dust and old volumes.'

Tesla Robotaxis Will Automatically Recharge Themselves
'Then it appeared to make up its mind, and trundled over to a wall socket...'

New Lifelike Material Powered By Artificial Metabolism
'... The biological robots were not living creatures.'

Husqvarna Automower 435X AWD
'Gramp Stevens sat in a lawn chair, watching the mower at work...'

Elon Musk Foretells Tesla Sans Steering Wheel
'How about the steering wheel... I don't need one.'

Adversarial Patches Trick Computer Vision
'The surveillance cameras can all see it, but then they forget they’ve seen it.'

Amazon Warehouse Computer Can Fire People Now
'The system has already fired five people...'

BrainEx Restores Some Activity To Severed Pig Head
'... they placed the brain in a special solution, having all the properties of Nursing the brain cells.'

Yes, But Do Astrobees Have Lasers For Lightsaber Training?
'... Ancient weapons are no match for a good blaster at your side, kid.'

'Young Razorbacks Before Their Katanas Grow In'
'Twin robotic arms with gleaming three-foot sword blades unfolded from the forward hydraulic assemblies...'

A New Way To Run Into Things
'He made an adjustment, pointed the tube at the wall beside Etzwane, and projected a cone of light.'

'Metallic Wood' Strong Like Titanium, Floats In Water
'A metal... light as cork and stronger than steel...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.