मुख्य सामग्री पर जाएँ

चेहरा पहचान

तय करना कि दो चेहरे एक ही व्यक्ति के हैं

दृष्टि बोधमध्यवर्ती #16
इनपुटइमेजटेबल

यह पृष्ठ अंग्रेज़ी में प्रस्तुत है; शीर्षक और सारांश का स्थानीयकरण किया गया है।

यह क्षमता क्या है

Takes one or two face images and outputs an identity decision: verification answers whether the two are the same person, while identification asks who in a gallery a face matches. Faces are first aligned and encoded into feature vectors, then compared by distance. Unlike classification the class set is not fixed; the comparison target comes from a dynamic gallery.

तकनीकी रूप से कैसे

The pipeline typically detects a face, aligns it by keypoints, and extracts a feature vector with a deep network trained by metric learning to pull the same person together and push others apart. Early systems relied on hand-crafted features; deep metric learning around 2014 pushed accuracy past the practical threshold. Liveness detection, which separates a live person from a photo or a mask, is an indispensable part of any deployment.

प्रतिनिधि उत्पाद

1

संबंधित संस्थान

सामान्य उपयोग

  • Access control and ID verification
  • Automatic people grouping in photo albums
  • Identity confirmation for remote account opening
  • Video search and person tracking

इसका मूल्यांकन कैसे होता है

1:1 verification accuracy
Correct same-or-different decisions
TAR@FAR
True accept rate at a fixed false accept rate
Identification mAP
Ranking quality when searching a gallery

सीमाएँ और कठिनाइयाँ

  • Large pose differences, age gaps and harsh lighting push the same person apart in feature space
  • Uneven training data produces systematic bias across skin tones and genders
  • Photos, replayed video and realistic masks can fool the system, so liveness detection is required, not optional

इसके पीछे की अवधारणाएँ