Tehnički glasnik, Vol. 7 No. 2, 2013.
Izvorni znanstveni članak
Testing the Impact of Paper Characteristics on a Parameter w of the Lorentz Shaped Point Spread Function
Katja Pertic Maretić
; Grafički fakultet, Sveučilište u Zagrebu, Zagreb, Hrvatska
Damir Modrić
orcid.org/0000-0002-0110-2952
; Grafički fakultet, Sveučilište u Zagrebu, Zagreb, Hrvatska
Marin Milković
; Veleučilište u Varaždinu, Varaždin, Hrvatska
Sažetak
Subsurface scattering of light in paper (fabric or other transparent material) has been calculated in the framework of Monte Carlo simulation, which has given the Lorentz shaped point spread function (PSF) as the result. The paper was modelled with respect to various parameters of the paper description: coating, the composition of paper, and a dependence on the wavelength of the light by which the paper was illuminated. Given the fact that the Lorentz distribution is parametric, the following was calculated: the dependence of the Lorentz distribution parameter w on the thickness of paper coating, on the asymmetry factor of cellulose fibres as a component of paper, and on the wavelength of the light that falls onto the paper. It has been shown that in addition to cellulose fibres, other components of paper have no influence on the parameter w.
The results have shown that the parameter w is smaller for coated paper, for less asymmetric components of paper and a smaller wavelength of light, which depends on the absorption coefficients and scattering of light in a paper and on the wavelength of light.
Ključne riječi
Monte Carlo simulation; point spread function; Lorentz distribution parameter w
Hrčak ID:
105599
URI
Datum izdavanja:
15.6.2013.
Posjeta: 1.299 *