3duBuf J M H, Campbel T G. A quantitative comparison of edge -preserving smoothing techniques [ J ]. Signal Processing, 1990,21 (4) :289-301.
4Shiji A, Hamada N. Color image segmentation method usingwatershed algorithm and contour information[ C//Proceed- ings of international conference on image processing. Kobe, Japan: [ s. n. ] ,1999:405-409.
5Shafarenko L, Petrou M, Kittler J. Automatic watershed seg- mentation of randomly textured color images[ J]. IEEE Trans- actions on Image Processing, 1997,6 ( 11 ) : 1530-1544.