Significant Geometry Features in Tongue Image Analysis

Table 3

Optimized classification result between various classes having identical tongue shape.

Tongue shape	Class comparison	Optimal feature(s)	Average accuracy
Circle or square	Healthy versus EG	1, 7	88.65%
Obtuse triangle	DM versus. CHD	1, 7, 4, 11, 13, 2	76.23%
Acute triangle	NR versus CG	2	70.00%
Rectangle	GV versus NS	9, 4, 7, 8, 2, 13, 12, 1	70.07%