Multi-level contrast filtering in image difference metrics

EURASIP Journal on Image and Video Processing

Table 3 Spearman correlation for WLF-DEE and the selected state-of-the-art metrics on all databases

Metric	TID (masked noise)	TID (quantization noise)	TID (image denoising)	TID (contrast change)	Ajagamelle	Pedersen
	Linear	Linear	Linear	Linear	Linear	Linear
PSNR	0.55	0.47	0.53	0.45	0.71	0.72
PSNR-HVS-M	0.53	0.46	0.53	0.45	0.70	0.72
S-CIELAB	0.66	0.63	0.69	0.62	0.72	0.77^a
SSIM	0.74^a	0.83^a	0.78^a	0.74^a	0.72^a	0.49
VSNR	0.48	0.39	0.49	0.43	0.14	0.02
WLF-DEE-C I	0.60^b	0.71^b	0.66^b	0.63^b	0.61^b	0.43
WLF-DEE-C J	0.59	0.69	0.65	0.59	0.59	0.42
WLF-DEE-C K	0.59	0.70	0.66^b	0.60	0.57	0.44^b
WLF-DEE-C L	0.57	0.65	0.62	0.59	0.60	0.43
WLF-DEE-C M	0.43	0.48	0.50	0.46	0.56	0.37
WLF-DEE-C N	0.50	0.56	0.56	0.48	0.55	0.38
WLF-DEE-C O	0.53	0.59	0.58	0.48	0.53	0.38
WLF-DEE-C P	0.48	0.51	0.53	0.47	0.56	0.37