Naslov
Determination of point-spread function of paper substrate based on light-scattering simulation

Autori
Modrić, Damir ; Petric Maretić, Katja ; Hladnik, Aleš

Izvornik
Applied optics (0003-6935) 53 (2014), 33; 7854-7862

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
imaging systems ; image reconstruction techniques ; light propagation in tissues

Sažetak
The objective of this work was to establish the relationship between the calculated subsurface scattered-photon distribution and the mathematical quantity known as point-spread function (PSF). Photon distribution of subsurface scattered light was calculated using the Monte Carlo method developed for describing reflectance and opacity of paper and of images printed on paper. The obtained normalized photon distribution made it possible to separate optical and mechanical components of dot gain for the paper-ink system. In the presented method of obtaining the reflectance profile of a screen element, the PSF convolves with a modelled reflectance profile of that element. It was found that the PSF can be better approximated by means of the Lorentzian function when compared to the Gaussian profile that was used in the past research on this topic.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Grafička tehnologija, Računarstvo

POVEZANOST RADA