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 …

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 …

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 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 …

Color appearance models are usually based on equations with fixed numerical coefficients
that were predetermined to yield optimal agreement for a selected standard observer. Here …

An accurate image-difference measure would greatly simplify the optimization of imaging
systems and image processing algorithms. The prediction performance of existing methods …

Color difference research has recently culminated in the creation of the CIEDE2000 color
difference equation. This equation has been shown to accurately predict perceived …

The spatiochromatic properties of the human visual system are described in terms of the
contrast-sensitivity function (CSF). An experiment is described that measures the luminance …

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 …

For developing color difference formulas, there are several choices to be made on the
psychophysical method used for gathering visual (observer) data. We tested three different …