Transformations of digitized color images in perceptually-uniform CIELUV color space and their perceptual relevance were investigated. Chroma variation was chosen as the first step of a series of investigations into possible transformations (including lightness, hue-angle, chroma, etc.). To obtain the information about the perceptual consequences of the chosen transformations, perceptual image quality, naturalness, and colorfulness were measured by means of scaling. The results suggest that in general a more colorful image than the original one is preferred.
Elena A. Fedorovskaya, Frans J. J. Blommaert, Huib de Ridder, "Perceptual Quality of Color Images of Natural Scenes Transformed in CIELUV Color Space" in Proc. IS&T 1st Color and Imaging Conf., 1993, pp 37 - 40, https://doi.org/10.2352/CIC.1993.1.1.art00008