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
(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 |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 7 )
Related News Stories -
Juggalo Face Paint Disrupts Facial Recognition
'... designed to foil facial recognition systems.' - Neal Stephenson, 2019
'Agression Detectors' Don't Work When Spying On Students
'The professional agitators had also learned how to modulate their voices below the danger level...' - Anne McCaffrey, 1973.
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.
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.
China Deploys Robot Traffic Police
'The robot came up smooth and fast as a rocket...'
Better Than Dune Chromoplastic? This Guy Might Have Done It
'But when Old Father Sun departs, the chromoplastic reverts to transparency in the dark.'
Gather, An AI Warehouse Inventory Drone Startup
'It extended three of its tiny arms sideways to lock onto the registration pins...'
China's Artificial Intelligence-Enhanced Education
'The grey gas not only cut off his vision, but also his other senses...'
Orbital Manufacturer 'Made in Space' Gets $73 Million NASA Contract
'Mass-produced in the orbiting factories...'
Soli Gesture Tech Will Be In Google Pixel 4
'I enjoy watching this way, but - He waved his hand and the circuit switched abruptly.'
Uber Eats Pairs Cars With Drones
Fresh grub? Let's hope they aren't delivering grubs.
Space-Based Solar Power Roundup
SF writers popularized and elaborated on this idea a generation before the first patents were filed.
Lost Language Meanings Found By Machine Learning
'The autopilot would need data before it could begin a translation...'
'Aerogel' Sheets For Martian Gardens
'Sealed to the ground along all the sides, Honey, he growled...'
France's 'Red Team' Of Science Fiction Authors
'They're the only experts we have.'
Dim The Sun With Stratospheric Controlled Perturbation Experiment
'Those twin volcanoes; d'ye see them, Mr. Renner?'
Mashambas Skyscraper Farm Design Wins
'...a towering eighty-story structure like the office In-and Out baskets stacked up to the sky.'
Self-Driving Tractors From China Plan Ahead
'Machines that seemingly with full consciousness walked out into the fields to do their daily work.'
Jet-Powered Hoverboard Works!
L'audace, l'audace, toujours l'audace!
Nobe 3-Wheel Electric Vehicle Parking Like I, Robot
Spidercar, Spidercar, does whatever a spidercar does.
More SF in the News Stories
More Beyond Technovelgy science news stories