Hierarchical Feature Extraction Assisted with Visual Saliency for Image Quality Assessment

Table 1

Basic information of four databases.

Database	Reference images	Distorted images	Distortion types	Resolution	Observers
LIVE	29	779	5	Various	161
CSIQ	30	866	6	512 × 512	35
TID2008	25	1700	17	512 × 384	838
TID2013	25	3000	24	512 × 384	971