An AI-Powered Lie Detection System Using Facial Micro-Expressions

Deciding whether a person is telling the truth matters in security screening, forensic questioning, recruitment interviews, and fraud inquiries, yet the available instruments are weak.The polygraph demands attached sensors and a trained operator, and unaided human judges perform only marginally above chance.Micro-expressions, which are involuntary facial movements lasting roughly a twenty-fifth to a fifth of a second, give a contactless cue, but they pass too quickly for people to follow reliably.This paper describes the design and prototype of a video-based deception analysis system built aro