Reference Footage
Definition
Footage of a known person used for comparison with questioned footage. Its suitability depends on image quality, viewpoint, walking conditions and the features visible in both recordings.
Related terms
- Continuous Authentication
- An authentication approach that verifies user identity throughout an active session rather than only at login, using passively collected behavioural signals to...
- Covariate Problem
- In forensic gait analysis and computer-vision gait recognition, the degradation in accuracy caused by variations in viewpoint, clothing, footwear, walking speed, surface,...
- Dwell Time
- The period between an attacker gaining initial access and their detection. Reducing dwell time is a primary goal of threat hunting. The...
- Equal Error Rate (EER)
- The point on a classifier's detection error tradeoff curve where the false accept rate equals the false reject rate. Lower EER indicates...
- Flight Time
- For the release-to-press definition, the next key-down timestamp minus the preceding key-up timestamp. It can be negative when the two keypresses overlap....
- Forensic Gait Analysis
- The comparison of an unknown person's gait as captured on CCTV or other footage against reference gait footage of a known individual,...
- Free-Text Keystroke Dynamics
- Keystroke analysis of content that need not be the same between reference and test samples. Performance depends on the available samples, device,...
- Mouse Dynamics
- The statistical characteristics of cursor movement patterns, including velocity, acceleration, path curvature, jitter, and click timing, used as a continuous behavioural authentication...
- Touch Dynamics
- Behavioural features derived from touchscreen interaction, such as tap timing and swipe trajectories. Pressure and contact-area measurements require appropriate hardware and recording...