I was asked this question in my last interview and here is a short and crisp answer of this.
A face recognition is a biometric solution which recognizes human face without physical contact required.
It runs through an algorithm that matches facial nodes to images saved in database.
It first recognizes unique features like nose, eyes, Iris, nose width and length, lips, cheeks, eye brows, jaws etc.
We extract these features from image than compare in database
Its accuracy is 99.31%
The accuracy sometimes decreases because of
- Lights
- Face positions
- Makeup
- Hair style
- Accessories
Application of face recognition
- Criminal Identification
- Surveillance
- Police authorities
- Tracking attendance
- Defense services
- Online payment services
Thanks for reading <3
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