A psychophysical experiment was performed to determine the direction of least and most preferred color shifts for digital images. 360 images were subdivided into 18 hue regions. The pixels in each hue region were shifted eight directions in IPT color space, and observers were asked to classify which direction was least preferred, and which was most preferred. From these data preference maps wer...

This paper demonstrates a technique for constructing a mapping between pixel values and pixel colours to create a composite colour image in which the colours are distributed uniformly in RGB colour space. Visual inspection of such an image utilises the full range of the human visual system, both in terms of intensity and hue. The perceived result is an enhanced image which usually has a subject...