Table 2. Exact and 1-off accuracy of age estimation (this work) for Adience dataset age groups.

Age group (years range)	Exact accuracy	1-off accuracy
25-32	0.68	0.98
33-38	0.50	1.00
38-44	0.63	0.95
44-48	0.55	0.92
48-54	0.60	0.97
54-60	0.54	0.99
60-69	0.78	0.98

1-off accuracy represents the accuracy when the result is off by 1 adjacent age label left or right [7].