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Faces: Exploring Human Expressions

📑 5 slides 👁 23 views 📅 2/5/2026
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Introduction to Faces

Faces are central to human identity and communication, expressing emotions and intentions.

Introduction to Faces
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The Science of Facial Expressions

  • Paul Ekman identified 7 universal facial expressions: joy, sadness, anger, fear, surprise, disgust, contempt.
  • Microexpressions last less than 1/25th of a second and reveal true emotions.
  • The fusiform face area in the brain specializes in facial recognition.
The Science of Facial Expressions
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Faces in Art History

  • Ancient Egyptian portraits focused on profile views with symbolic proportions.
  • Renaissance artists like da Vinci studied facial anatomy to achieve realism.
  • Picasso's cubist faces broke traditional representations in the 20th century.
Faces in Art History
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Facial Recognition Technology

  • Modern facial recognition systems use 68-128 landmark points for identification.
  • Accuracy rates exceed 99% in controlled conditions but raise privacy concerns.
  • Liveness detection prevents spoofing with photos or videos.
Facial Recognition Technology
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The Future of Faces

  • Biometric facial authentication is replacing passwords for digital security.
  • AI can generate hyper-realistic synthetic faces that don't exist in reality.
  • Facial analysis is helping diagnose genetic conditions and neurological disorders.
The Future of Faces
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