Table 2.

Average relative errors for different sampling patterns and masking levels.

	Scattered low masking (%)	Scattered medium masking (%)	Scattered high masking (%)
No noise	$0.20$	$0.20$	$0.24$
With noise	$0.16$	$0.20$	$0.24$

	Ring low masking (%)	Ring medium masking (%)	Ring high masking (%)
No noise	$0.60$	$0.92$	$1.00$
With noise	$0.60$	$1.14$	$0.91$

	Grid-edge low masking (%)	Grid-edge medium masking (%)	Grid-edge high masking (%)
No noise	$0.78$	$0.97$	$1.11$
With noise	$0.82$	$0.99$	$1.09$