Sequential fuzzy cluster extraction by a graph spectral method
Sequential extraction method is presented for fuzzy clusters from a set of point data which is represented by a weighted graph. Nodes and links in the graph have nonnegative real weights. Memberships of data in a cluster are evaluated by the principal eigenvector of the weighted adjacency matrix of the graph. Node weights are successively reduced after extraction of clusters. The extraction of clusters is stopped when the volume of an extracted cluster reveals abrupt rebound. The method is applied to image segmentation and extraction of skin color regions from color images.
fuzzy clustering graph spectral method weighted graph image segmentation