At LIVE (in collaboration with The Department of Psychology at the University of Texas at Austin), an extensive experiment was conducted to obtain scores from human subjects for a number of images distorted with different distortion types. These images were acquired in support of a research project on generic shape matching and recognition.
TID is intended for evaluation of full-reference image visual quality assessment metrics. TID allows estimating how a given metric corresponds to mean human perception.
The CSIQ database consists of 30 original images, each is distorted using six different types of distortions at four to five different levels of distortion. CSIQ images are subjectively rated base on a linear displacement of the images across four calibrated LCD monitors placed side by side with equal viewing distance to the observer. The database contains 5000 subjective ratings from 35 different observers, and ratings are reported in the form of DMOS.