emotion recognition
What is facial emotion recognition? Why is emotion detection important?

Facial recognition and biometric scanning systems also use computer vision technology to identify individuals for security purposes. The most common example of computer vision in facial recognition is for securing smartphones. More advanced uses of facial recognition and biometrics include in residential or business security systems that use unique physiological features of individuals to verify their identity. Deep learning algorithms can identify the unique patterns in a person’s fingerprints and use it to control access to high-security areas such as high-confidentiality workplaces, such as nuclear powerplants, research labs, and bank vaults.

A facial recognition system uses biometrics to map facial features from a photograph or video. It compares the information with a database of known faces to find a 
The interest around emotion recognition has been developing since the beginning of 21st century and reached its peak around 2016. At the edge of 2015 -2016