Customized Dictionary Learning for Subdatasets with Fine Granularity

Table 2

PSNR for superresolution on test images.

Task	Bicubic		DL3	Cus3	DL6	Cus6	DL9	Cus9
1	32.5	34.4	33.1	35.0	34.1	35.4	35.6	35.7
2	33.8	36.2	36.1	36.9	35.0	36.8	37.0	37.2
3	32.9	35.8	32.4	36.6	31.8	37.0	36.7	37.3
4	32.0	34.0	34.0	34.7	32.1	34.9	33.8	35.1
5	36.2	38.1	37.6	38.7	36.7	38.9	38.7	38.9