The emotion recognition software analyses the video on the tiny computer hidden inside the Google eye-wear and reveals emotions. It can gauge emotions such as anger, happiness, sadness and surprise and displays this information on screen, media reports said.

"This opens up an entire spectrum of new smart eye-wear applications, including communication aids for people with disorders such as autism, many of whom have difficulty interpreting emotions through facial expressions," its developers from Germany-based Fraunhofer Institute for Integrated Circuits were quoted as saying.

The app is ‘trained’ by accessing a database of more than 10,000 annotated faces. The technology is also available for desktop computers, reports added.

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