IMAGE: Example of the facial stream strains when two androids (left and center) and grownup males (proper) lifted their inside eyebrow.
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Credit: Ishihara, Iwanaga, and Asada, Comparison between the Facial Flow Lines of Androids and Humans, Frontiers in Robotics and AI, 2021

Osaka, Japan – Researchers from the Graduate School of Engineering and Symbiotic Intelligent Systems Research Center at Osaka University used movement seize cameras to match the expressions of android and human faces. They discovered that the mechanical facial actions of the robots, particularly within the higher areas, didn’t totally reproduce the curved stream strains seen within the faces of precise individuals. This analysis might result in extra lifelike and expressive synthetic faces.

The subject of robotics has superior a fantastic deal over the previous a long time. However, whereas present androids can seem very humanlike at first, their lively facial expressions should be unnatural and barely unsettling to us. The actual causes for this impact have been troublesome to pinpoint. Now, a analysis staff at Osaka University has used movement seize know-how to watch the facial expressions of 5 android faces and in contrast the outcomes with precise human facial expressions. This was achieved with six infrared cameras that monitored reflection markers at 120 frames per second and allowed the motions to be represented as three-dimensional displacement vectors.

“Advanced artificial systems can be difficult to design because the numerous components have complex interactions with each other. The appearance of an android face can experience surface deformations that are hard to control,” research first writer Hisashi Ishihara says. These deformations could be as a consequence of interactions between parts such because the smooth pores and skin sheet and the skull-shaped construction, in addition to the mechanical actuators.

The first distinction the staff discovered between the androids and grownup males was of their stream strains, particularly the attention and brow areas. These strains tended to be nearly straight for the androids however had been curved for the human grownup males. Another main distinction was with the pores and skin floor undulation patterns within the higher a part of the face.

“Redesigning the face of androids so that the skin flow pattern resembles that of humans may reduce the discomfort induced by the androids and improve their emotional communication performance,” senior writer Minoru Asada says. “Future work may help give the android faces the same level of expressiveness as humans have. Each robot may even have its own individual “persona” that will help people feel more comfortable.”


The article, “Comparison between the facial flow lines of androids and humans,” was printed in Frontiers in Robotics and AI at DOI:

About Osaka University

Osaka University was based in 1931 as one of many seven imperial universities of Japan and is now certainly one of Japan’s main complete universities with a broad disciplinary spectrum. This energy is coupled with a singular drive for innovation that extends all through the scientific course of, from elementary analysis to the creation of utilized know-how with constructive financial impacts. Its dedication to innovation has been acknowledged in Japan and world wide, being named Japan’s most modern college in 2015 (Reuters 2015 Top 100) and some of the modern establishments on this planet in 2017 (Innovative Universities and the Nature Index Innovation 2017). Now, Osaka University is leveraging its function as a Designated National University Corporation chosen by the Ministry of Education, Culture, Sports, Science and Technology to contribute to innovation for human welfare, sustainable improvement of society, and social transformation.


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