Now, computer system that spots fake expressions of pain better than people
Washington: Researchers have found that a computer-vision system can distinguish between real or faked expressions of pain more accurately than can humans.
The study employed two experiments with a total of 205 human observers who were asked to assess the veracity of expressions of pain in video clips of individuals, some of whom were being subjected to the cold presser test in which a hand is immersed in ice water to measure pain tolerance, and of others who were faking their painful expressions.
Mark G. Frank, PhD, professor of communication, University at Buffalo, said human subjects could not discriminate real from faked expressions of pain more frequently than would be expected by chance, asserting that even after training, they were accurate only 55 percent of the time. The computer system, however, was accurate 85 percent of the time.
Bartlett noted that the computer system "managed to detect distinctive, dynamic features of facial expressions that people missed. Human observers just aren`t very good at telling real from faked expressions of pain."
The researchers employed the computer expression recognition toolbox ( CERT ), an end-to-end system for fully automated facial-expression recognition that operates in real time. It was developed by Marian Bartlett, PhD, research professor, Institute for Neural Computation, University of California, San Diego; Gwen C. Littlewort, PhD, co-director of the institute`s Machine Perception Laboratory, Frank and others to assess the accuracy of machine versus human vision.
They found that machine vision was able to automatically distinguish deceptive facial signals from genuine facial signals by extracting information from spatiotemporal facial-expression signals that humans either cannot or do not extract.
The study has been published in the journal Current Biology.
More from India
More from World
More from Sports
More from Entertaiment
- Ajinkya Rahane to captain India on Zimbabwe tour; Dhoni, Kohli rested
- Kejriwal knew Tomar possessed fake degree, says Yogendra Yadav
- Shiv Sena slams HC order banning erection of pandals on roads
- Top leader of NSCN(K) arrested for Manipur attacks by NIA
- Vijender Singh turns professional boxer, to miss 2016 Rio Olympics
- India vs Zimbabwe: Ajinkya Rahane to lead; MS Dhoni, Virat Kohli rested
- Tihar Jail's security breached: Lt Governor Najeeb Jung orders probe, Centre seeks report
- Chinese military research academy praises India's main battle tank Arjun, says it's 'very good'
- Gangster Abu Salem ready to tie the knot with girl seeking to marry him
- Vijender Singh brings down curtains on India career, turns professional