Artificial mosaic generation with gradient vector flow and tile cutting

Mosaics are images obtained by cementing together small colored fragments and are an ancient example of discrete primitive-based images. artificial mosaics are illustrations composed by a set of small images called tiles that tessellate a source image aiming to reproduce the original visual information in a mosaic-like style. in this paper,we propose a mosaic generation technique based on gradient vector flow (gvf) together with a set of tile cutting heuristics evaluated according to aesthetic criteria. the effectiveness of the proposed approach has been confirmed by a series of tests and comparisons with state-of-the-art techniques. © 2013 sebastiano battiato et al.