How different are two images when viewed by a human observer? Such knowledge is
needed in many situations including when one has to judge the degree to which a graphics …

How different are two images when viewed by a human observer? There is a class of
computational models which attempt to predict perceived differences between subtly …

In medical images, the data often represent information with a quantitative meaning, such as
the radiation absorption by tissues. Therefore, it is crucial that this quantitative information is …

We discuss a few selected hypotheses on how the visual system judges differences of color
images. We then derive five image-difference features from these hypotheses and address …

In this paper I present a distortion metric for color video sequences. It is based on a contrast
gain control model of the human visual system that incorporates spatial and temporal …

In the proposed study, we focus on the measure of colour contrast. The underlying idea is to
define an objective metric which is consistent with observer valuation. The main goal of the …

Evaluation of image difference including colour and spatial aspects is often required in
colour reproduction industry. The objective of a successful image difference model should …

In this paper, we propose and discuss some approaches for measuring perceptual contrast
in digital images. We start from previous algorithms by implementing different local …

For the visual system, luminance contrast is a fundamental property of images, and is one of
the main inputs of any simulation of visual processing. Many models intended to evaluate …

We have carried out a psychophysical experiment to register perceived contrast. 17
observers viewed 15 images, each image was shown for 40 seconds where the observer …