An Example-Based Super-Resolution Algorithm for Selfie Images

Table 3

Comparison of computational efficiency of the proposed algorithm with various SR algorithms.

Algorithm	Training; time	Recovery time (in seconds)
		Lena	Test image (#1)	Test image (#3)	Test image (#5)
Dong et al.	—	352.6	468.4	186.2	261.4
He et al.	—	3360.3	3960.2	2460.8	3123.4
Yang et al.	12 hours	11.8	24.1	18.2	29.6
Kim et al.	24 hours	32.6	41.8	26.3	38.1
Proposed	49 s	4.2	2.6	1.8	2.8