Real and fake smiles can be tricky to tell apart, but researchers at the University of Bradford have now developed 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. 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.
“A smile is perhaps the most common of facial expressions and is a powerful way of signalling positive emotions,” says Hassan Ugail, Professor of Visual Computing at the University of Bradford, who led the research. “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.”
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.
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,” explains Professor Ugail. “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.”
He adds: “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. It could also be important to social and clinical scientists aiming to gain more insight into human behaviour and emotion.”
The Latest on: Facial expressions
via Google News
The Latest on: Facial expressions
- 'Smiling eyes' may not signify true happiness after allon January 21, 2021 at 12:50 pm
A smile that lifts the cheeks and crinkles the eyes is thought by many to be truly genuine. But new research casts doubt on whether this joyful facial expression necessarily tells others how a person ...
- Hillel's Tech Corner: Emotiplay: ‘Emotion gym’ for kids with autismon January 21, 2021 at 11:20 am
Children on the spectrum can be taught to recognize emotions, facial expressions and social cues they don’t perceive intuitively.
- UP: Lucknow Police Deploying AI Cameras To Capture Facial Expressions Of Women Under Threaton January 21, 2021 at 8:44 am
The Lucknow police will initially install five AI-based cameras which will get activated after detecting facial expressions of women.
- Smart cameras to be set up in Lucknow to track facial expression of women in distress, alert policeon January 21, 2021 at 2:53 am
Policy experts and researchers have criticised the initiative, which is a part of the Uttar Pradesh government’s Mission Shakti programme.
- Lucknow: AI-cameras will read 'distressed' women's facial expressions, alert policeon January 21, 2021 at 2:49 am
The capital of Uttar Pradesh, Lucknow, will get artificial intelligence-enabled cameras in public places that will conclude if a woman is in distress by reading the change in her facial expressions | ...
- Lucknow Police Deploys Facial Expression-Recognising Camera to Find Women Under Threaton January 21, 2021 at 2:12 am
Notably, the new mission will help reduce cases of harassment of women subjected to stalking and threat in the city.
- Facial recognition tech deployed in UP to help women in distresson January 21, 2021 at 1:57 am
The Lucknow police are deploying facial recognition technology backed by security cameras that will read expressions of women in distress and alert their nearest police station.
- A new, unprecedented solution for human behavior analysison January 20, 2021 at 10:48 pm
Herta launches a new advanced facial expression analysis solution for the study of human behavior in videos Herta is thrilled to announce the launch of our new video analysis solution, BioObserver.
- A Taxonomy of Donald Trump’s Facial Expressionson January 20, 2021 at 7:55 am
The outgoing president’s journey from reality television to the Oval Office is evident in every smile and every scowl.
- 16 facial expressions ‘universal’, overlap in 70% social contexts globally: Researchon January 20, 2021 at 3:14 am
Google researchers have found that 16 facial expressions occur universally in similar contexts across the world ...
via Bing News