The Association of Quantitative Facial Color Features with Cold Pattern in Traditional East Asian Medicine

Table 1

The extraction method of facial regions of interests.

Region (region number)	Description
	Center point position	Radius
Whole face	Determined by spline interpolation from points 1 to 17 and from 69 to 73. Lip, nose tip (3136), eyes (4348, 3740), eyebrows (2327 & 7779, 1822 & 7476) regions and nonskin regions are excluded
Forehead ()		Distance (center point, pt22) 0.7
Upper cheek ()	Left: Right:	Distance (center point, pt47) 0.8; Distance (center point, pt42) 0.8
Lower cheek ()	Left: Right:	Distance (center point, pt13) 0.7; Distance (center point, pt5) 0.7
Nose ()		Distance (center point, pt31) 1.4
Chin ()		Distance (center point, pt58) 0.8
Lip	Determined by spline interpolation from points 49 to point 60 (outer) and from 61 to 68 (inner)