Mrm. Nijenhuis et Fjj. Blommaert, PERCEPTUAL-ERROR MEASURE AND ITS APPLICATION TO SAMPLED AND INTERPOLATED SINGLE-EDGED IMAGES, Journal of the Optical Society of America. A, Optics, image science,and vision., 14(9), 1997, pp. 2111-2127
Error metrics quantify the difference between a reproduced image and t
he corresponding unprocessed original image. A drawback of the commonl
y used metrics such as the mean square error is their poor correlation
with the perceived quality of the reproduced image. We present a fram
ework for an alternative metric that uses the distance in a perceptual
space to predict the perceived impairment of reproduced images. The p
erceptual space is spanned by perceptual artifacts that are introduced
by image-reproduction techniques. For image reproduction using sampli
ng and interpolation it is shown how such a multidimensional space can
be determined from the image. The sensory strengths of the artifacts'
periodic structure and blur are two of the orthogonal dimensions of t
his space. In addition, we demonstrate that, after the perceptual-erro
r metric is calibrated to a particular observer, this metric can succe
ssfully predict experimentally determined subjective image quality of
sampled and interpolated simple black-and-white images. (C) 1997 Optic
al Society of America.