Table 5.

$r$, $rs$, mean, SD, $b$, $a$, and RMSE for four IQMs. 480 images.

	$r$	$rs$	Mean	SD	$b$	$a$	RMSE
4-G-SSIM	0.67	0.66	0.45	0.24	0.78	0.06	0.22
4-MS-G-SSIM-0.31	0.75	0.81	0.41	0.19	1.10	$-0.04$	0.18
$4\text{-}\mathrm{G}\text{-}{r}^{*}$	0.69	0.66	0.37	0.23	0.82	0.11	0.21
$4\text{-}\mathrm{MS}\text{-}\mathrm{G}\text{-}{r}^{*}\text{-}0.25$	0.71	0.76	0.41	0.21	0.94	0.03	0.20

Note: Observers: $\text{mean}=0.41$, $\mathrm{SD}=0.28$.