optical fingerprint

OPPO Kernel Craftsman

Mar 26, 2021 · Fundamentals

Optical Fingerprint Sensors: Principles, Common Issues, and Gabor Filter Preprocessing

Optical fingerprint sensors capture ridge patterns via illuminated light through an under‑display lens, offering full‑screen designs but facing challenges like incomplete presses, lighting failures, and dirty or wet fingers, while Gabor filter preprocessing enhances image texture to improve recognition robustness and guide future hardware‑algorithm improvements.