Gait recognition

Gait is the peculiar way one walks and is a complex spatio-temporal biometric. Gait is not supposed to be very distinctive, but is sufficiently discriminatory to allow verification in some low-security applications. Gait is a behavioural biometric and may not remain invariant, especially over a long period of time, due to fluctuations in body weight, major injuries involving joints or brain, or due to dipsomania.

Acquisition of gait is similar to acquiring a facial picture and, hence, may be an acceptable biometric for visual surveillance purposes. However, since gait-based systems use the video-sequence footage of a walking person to measure several different movements of each articulate joint, it is input intensive and computationally expensive.

Relatively recent additions to research databases seem focused on exploiting the relations between behaviour biometrics and its corresponding prints.