What is Face Recognition
Identifying a person by face
Face Recognition is a computer vision technology for identifying or verifying a person by their face in an image or video.
How It Works
- Face detection — locating a face in an image
- Feature extraction — identifying key points (eyes, nose, mouth)
- Embedding creation — converting the face into a numerical vector
- Comparison — matching against a database of faces
Applications
- Device unlocking (Face ID)
- Access control (PACS)
- Person search (law enforcement)
- Service personalization (retail, banking)
- Identity verification (KYC)
Technologies and Algorithms
- DeepFace — Facebook/Meta
- FaceNet — Google
- ArcFace — modern SOTA algorithm
- OpenCV — computer vision library
Ethical Considerations
The technology raises discussions about privacy, biometric data, and surveillance capabilities. In some jurisdictions, usage is legally restricted.