@inproceedings {Padilla2006a, title = {Measurement of Perceptual Roughness in Fractal Surfaces}, url = {http://www.macs.hw.ac.uk/texturelab/publications/papers/Papers_PDF/Measurement%20of%20Perceptual%20Roughness%20in%20Fractal%20Surfaces.pdf}, abstract = {In this paper we present an investigation into visually perceived surface roughness. First we present psychophysical evidence that suggests that there is a simple relationship between perceived roughness and two well known surface parameters: fractal dimension and rms roughness. And that neither are good estimators, on there own, of perceived roughness. Second we present a measurement model for deriving the perceived roughness of a surface from its height function which is motivated by the spatial frequency channel model of the human visual system.}, author = {S. Padilla and Ondrej Drbohlav and P. R. Green and M. J. Chantler}, year = {2006}, booktitle = {Proc. CIE Expert Symposium on Visual Appearance} }