Self-Learning Facial Emotional Feature Selection Based on Rough Set Theory

Table 2

33 features defined on 52 feature points.

feature	description	feature	description	feature	description
d 0	dis(11,19)	d 11	dis(39,44)	d 22	dis(44,48)/2
d 1	dis(18,31)	d 12	dis(39,48)	d 23	dis(45,51)
d 2	dis(21,25)	d 13	dis(44,48)	d 24	dis(47,49)
d 3	dis(20,26)	d 14	dis(46,50)	d 25	dis(14,23)
d 4	dis(22,24)	d 15	dis(39,3)	d 26	dis(15,27)
d 5	dis(29,33)	d 16	dis(21,A)	d 27	dis(19,23)/2
d 6	dis(28,34)	d 17	dis(A,25)	d 28	dis(27,31)/2
d 7	dis(30,32)	d 18	hei(A,44)	d 29	(wid(19,23)+wid(27,31))/2
d 8	dis(39,46)	d 19	dis(29,B)	d 30	(hei(11,39)+hei(18,39))/2
d 9	dis(23,44)	d 20	dis(B,33)	d 31	(hei(14,39)+hei(15,39))/2
d 10	dis(27,48)	d 21	hei(B,48)	d 32	(hei(44,39)+hei(48,39))/2