Combinatorics and counting -- Thinning and watersheds -- Distances -- Image representation and segmentation -- Invited paper : Polygonal approximation of point sets / Longin Jan Latecki, Rolf Lakaemper, Marc Sobel -- Approximations I -- Digital topology -- Shape and matching -- Invited paper : Computational aspects of digital plane and hyperplane recognition / David Coeurjolly, Valentin E. Brimkov -- Approximations II -- Combinatorics and grammars -- Tomography -- Poster session