In this paper, we present a spatially adaptive filter for color median filtering. Several alternative implementations of such a filter are given, using different ways of gradient computation. Then, several methods of color median filtering are compared in terms of performance on a particular image. Vector median filters are considered as well as median filters inspired by grey-level methods.
F. Robert-Inacio, J. Angulo, É. Dinet, "Contour and Detail Detection for Spatially Adaptive Color Median Filtering" in Proc. IS&T CGIV 2008/MCS'08 4th European Conf. on Colour in Graphics, Imaging, and Vision 10th Int'l Symp. on Multispectral Colour Science, 2008, pp 388 - 393, https://doi.org/10.2352/CGIV.2008.4.1.art00084