Stone polishing digital evaluation

Ornamental stone slabs and tiles present different market values according to their physical-mechanic characteristics. The last ones are strongly related with the “pictorial” attributes of the surfaces. Such attributes are influenced by the lithotype and colour characteristics and by the degree and quality of polishing of the exposed surfaces. Such attributes are influenced by the lithotype texture and colour characteristics and by the degree and quality of polishing of the exposed surfaces. The polishing degree in fact dramatically condition surface appearance. Furthermore it influences the durability of the stones themselves. In this paper a procedure is described to analyse the degree of polishing of ornamental stone surfaces in the perspective of a further digital based evaluation.