Articles - Leather Technology Magazine Nš84
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Appearance: a first step towards the
physical definition of leather aspect
ABSTRACT
The Leather aspect can be defined, either in crust or finished,
by appearance interpretation. This allows us just by sight, to
discriminate among different species (goatskin, sheepskin, bovine
skins, reptile, etc.) and even a finishing type (crust, aniline,
brush off, patent Leather, etc.).
Appearance is defined in terms of chromatic attributes and
geometric attributes. The first allows us to define the plain colour
(Black, Red, Green, etc.) while the second includes topographic
characteristics such as density, deepness, and
dimension of follicles, wrinkles, direction and combing sense of
fibers in nubuk and splits etc.), and physical such as retro reflectivity,
pearlescence, opacity, specularity, etc).
The scope of this paper is to demonstrate how light can interact
on colour definition of Leather articles, presenting the fundamental
psychophysical variables, which may influence
perception and which can lead to the instrumental total appearance
definition. |
