Integration of spatial and spectral information by means of unsupervised extraction and classification for homogenous objects applied to multispectral and hyperspectral data. - Luis O. Jimenez; Jorge L. Rivera-Medina; Eladio Rodriguez-Diaz; Emmanuel Arzuaga-Cruz; Mabel Ramírez-Vélez (IEEE Trans. Geosci. Remote. Sens., 2005)