Inspec keywords: graph theory; biometrics (access control); statistical analysis; image matching

Other keywords: biometric recognition systems; error rate improvement; biologically plausible distortions; real data; periocular biometrics; local angular movement avoidance; periocular region; edge-cost function; nonlinear distortion modelling; unconstrained data acquisition; vertex similarity measurement; biological tissue; facial expressions; synthetic data; test graphs; recognition performance; GC-EGM algorithm; model graphs; globally-coherent EGM algorithm; statistical analysis; elastic graph matching algorithm constraint; vertex locations

Subjects: Image recognition; Other topics in statistics; Combinatorial mathematics; Combinatorial mathematics; Other topics in statistics; Computer vision and image processing techniques