Figure 1.

Colour analysis of the selected scale images. (A) The region of interest (ROI) used for image analysis (i) localized area at the inner corner of the left eye—inner corner; (ii) area covering most of the left under‐eye area—infraorbital; (iii) a localized area close to the left cheek bone outside the under‐eye area, representing background skin colour—cheek bone. (B) L* and ITA values from the inner corner (i & iii) and infraorbital (ii & iv) ROIs of the dark circles were compared to grades. (C) L* and ITA values from the inner corner (i & iii) and infraorbital (ii & iv) ROIs of the dark circles adjusted for background skin colour and compared to grades. (r = Person’s correlation coefficient; with correspondingPvalues).