Figure 1.

Example species with sufficient spot patterning that could be useful for automated photo-identification. Shown are (a) whale shark (Rhincodon typus – Photo ^© G. Taylor) indicating the reference area defined as the area encompassed by the reference points (yellow circles); (b) spotted tree frog (Hyla leucophyllata – Photo ^© D. Bickford); (c) northern quoll, (Dasyurus hallucatus – Photo ^© J. Kirwan); (d) Amazon spotted frog (Hyla punctata – Photo ^© D. Bickford); (e) striped blue crow (Euploea mulciber – Photo ^© D. Lohman); and (f) mangrove snake (Boiga dendrophilia – Photo ^© D. Bickford).