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We address the problem of unsupervised segmentation of textural images by relying on morphological image representations and active contours. More precisely, starting with the assumption that textures are statistical ensembles of local image structures, known as textons, we first suggest to represent a texture image through a tree of ellipses, which are derived from the level lines of the image; we then investigate the statistical properties on the tree of ellipses and finally achieve adoi:10.5244/c.25.122 dblp:conf/bmvc/XiaY11 fatcat:2xvobk4bczc6zekqnqhypl6ez4