Motivated by recent findings in the field of visual perception, we present a novel approach for enhancing shape depiction and perception surface details. We propose shading-based technique that relies on locally adjusting direction light to account different components materials. Our ensures congruence between shading flows, leading an effective enhancement details while impairing neither light...

Dynamical scaling and ageing in disordered systems far from equilibrium is reviewed. Particular attention is devoted to the question to what extent a recently introduced generalization of dynamical scaling to local scale-invariance can describe data for either non-glassy systems quenched to below Tc or else for spin glasses at criticality. The dependence of the scaling behaviour on the distribu...

An exact nonlinear scaling transformation is presented for the local three-dimensional dynamical equations of motion for differentially rotating disks. The result is relevant to arguments that have been put forth claiming that numerical simulations lack the necessary numerical resolution to resolve nonlinear instabilities that are supposedly present. We show here that any time dependent velocit...

A new method is presented for solving equivalence problems for the extended jet of nite order of the scale space corresponding to a 2-dimensional input image and the groups of spatially homogeneous aane and orthogonal transformations of local cartesian coordinate frames. By means of this method complete and irreducible sets of algebraic invariants are found that may describe any local and (or) ...