A Fast Computation Method for IQA Metrics Based on their Typical Set
Vittoria Bruni, Domenico Vitulano · 2014
This paper deals with the {\em typical set} of an image quality assessment (IQA) measure. In particular, it focuses on the well known and widely used Structural SIMilarity index (SSIM). In agreement with Information Theory, the {\em visual distortion typical set} is composed of the least amount of information necessary to estimate the quality of the distorted image. General criteria for an effective and fruitful computation of the set will be given. As it will be shown, the typical set allows to increase IQA efficiency by considerably speeding up its computation.