“…Interactions between the cells of a CNN are only local and usually translation invariant, i.e., a connection from a cell j towards another cell i only exists if j is part of i's neighborhood and its type and strength depend only on the relative position of j with respect to i. Thus, the number of connections increases only linearly with the number of cells, a property that already enabled hardware realization of CNN (Cruz and Chua, 1992;Espejo et al, 1996;Carmona et al, 2003;Rodriguez-Vazquez et al, 2005;Flak et al, 2006) (see (Roska and Rodriguez-Vazquez, 2002;Roska, 2005Roska, , 2007 for an overview), as opposed to other types of ANN.…”