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Computer Can Now Reveal Your Fake Facial Expressions

According to the researchers, in fake smiles it is often only the mouth muscles which move but, as humans, we often don’t spot the lack of movement around the eyes. The computer software can spot this much more reliably

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Shanghai,
A U.S. Customs and Border Protection facial recognition device is ready to scan another passenger at a United Airlines gate (Representational image). VOA

Real and fake smiles can be tricky to distinguish, but researchers have now developed a computer software that can spot false facial expressions.

By analysing the movement of the smile across a person’s face, the software can determine whether or not the expression is genuine, said the study published in journal Advanced Engineering Informatics.

The most significant movements detected by the software were around the eyes, supporting popular theories that a spontaneous, genuine smile is one that can be seen in a person’s eyes.

“Techniques for analysing human facial expressions have advanced dramatically in recent years, but distinguishing between genuine and posed smiles remains a challenge because humans are not good at picking up the relevant cues,” said study lead author Hassan Ugail, Professor at University of Bradford in the UK.

The software works by first mapping a person’s face from within a video recording, and identifying the mouth, cheeks and eyes of the subject.

It then measures how these facial features move through the progress of the smile and calculates the differences in movement between the video clips showing real and fake smiles.

Shanghai,
Rana el Kaliouby, CEO of the Boston-based artificial intelligence firm Affectiva, demonstrates the company’s facial recognition technology, in Boston, April 23, 2018. (Representational image). VOA

Researchers tested the programme using two different datasets, one containing images of people expressing genuine smiles, and another in which the images portrayed posed smiles.

They found significant differences in the way the subjects’ mouths and cheeks moved when comparing the real and the fake expressions. The movements around the subjects’ eyes, however, showed the most striking variation, with genuine smiles generating at least 10 per cent more movement in these muscles.

“We use two main sets of muscles when we smile — the zygomaticus major, which is responsible for the curling upwards of the mouth, and the orbicularis oculi, which causes crinkling around our eyes,” Ugail said.

Also Read: Microsoft Acquires Data Privacy, Governance Service BlueTalon

According to the researchers, in fake smiles it is often only the mouth muscles which move but, as humans, we often don’t spot the lack of movement around the eyes. The computer software can spot this much more reliably.

“An objective way of analysing whether or not a smile is genuine could help us develop improved interactions between computers and humans — for example in biometric identification,” he added. (IANS)

Next Story

Here’s How Computer Can Cause Neck Pain

Solutions include increasing the font on your computer screen, wearing computer reading glasses or placing your computer on a stand at eye level.

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Indonesia, e-commerce, computer
Indonesian domestic workers attend a computer class during their day off at the Sekolah Indonesia Singapura (Indonesian School) in Singapore, Dec. 12, 2010. VOA

Do you tend to suffer from headaches or neck and backaches from computer work? If so, checking your posture may help, researchers say.

Sitting at a computer with jutting head forward to look more closely at the screen compresses the neck and can cause fatigue, headaches, poor concentration, increased muscle tension and can even lead to injury to the vertebrae over time.

It can even limit the ability to turn the head, the researchers explained.

computer
The researchers suggest to check posture and make sure the head is aligned on top of the neck, as if held by an invisible thread from the ceiling. Pixabay

“When your posture is tall and erect, the muscles of your back can easily support the weight of your head and neck — as much as 12 pounds,” said Erik Peper, Associate Professor at San Francisco State University.

“But when your head juts forward at a 45 degree angle, your neck acts like a fulcrum, like a long lever lifting a heavy object. Now the muscle weight of your head and neck is the equivalent of about 45 pounds. It is not surprising people get stiff necks and shoulder and back pain,” Peper added.

For the study, published in the journal Biofeedback, the team first asked 87 students to sit upright with their heads properly aligned on their necks and asked them to turn their heads.

Then the students were asked to “scrunch” their necks and jut their heads forward.

Ninety-two per cent reported being able to turn their heads much farther when not scrunching.

MBA, online training, skills, computer
Sitting at a computer with jutting head forward to look more closely at the screen compresses the neck and can cause fatigue, headaches.

In the second test, 125 students scrunched their necks for 30 seconds. Afterwards, 98 per cent reported some level of pain in their head, neck or eyes.

The researchers also monitored 12 students with electromyography equipment and found that trapezius muscle tension increased in the scrunched, head forward position.

Also Read: iPad Neck Pain More Common Among Women Than Men

The researchers suggest to check posture and make sure the head is aligned on top of the neck, as if held by an invisible thread from the ceiling.

Other solutions include increasing the font on your computer screen, wearing computer reading glasses or placing your computer on a stand at eye level, all to make the screen easier to read without strain. (IANS)