Recognition of Facial Expressions under Varying Conditions Using Dual-Feature Fusion

Algorithm 1

The procedure of feature extraction and fusion.

	Input: Training sample images with size
	Testing sample images
	Output:
	Procedure
(1)	For each do
(2)
(3)	For each do
(4)	using equations (3) and (4)
(5)
(6)
(7)	End For
(8)	End For
(9)	For each do
(10)
(11)	For each do
(12)	using equations (3) and (4)
(13)
(14)
(15)	End For
(16)	End For
(17)	For each do
(18)
(19)
(20)	End For
(21)	For each do
(22)	using equation (7)
(23)	End For
(24)