Osaka - Japan's affection for robots is no secret.

But is the feeling mutual in the country's amazing androids?

We may now be a step closer to giving androids greater facial expressions to communicate with.

While robots have featured in advances in healthcare, industrial, and other settings in Japan, capturing humanistic expression in a robotic face remains an elusive challenge.

This is owing to factors such as the huge range and asymmetry of natural human facial movements, the restrictions of materials used in android skin, and of course the intricate engineering and mathematics driving robots' movements.

A trio of researchers at Osaka University has now found a method for identifying and quantitatively evaluating facial movements on their android robot child head.

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