Open AccessPERFORMANCE OF LEVEL SLICING USING FILM NONLINEARITY
Author(s) -
Hongjun Zhang,
Jianhua Dai,
LU Nai-guang
Publication year - 1980
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.29.956
Subject(s) - slicing , nonlinear system , computer science , relation (database) , simple (philosophy) , optics , algorithm , materials science , computer graphics (images) , physics , data mining , philosophy , epistemology , quantum mechanics
A new method for level slicing operation of optical images, utilizing the nonlinear characteristics of photographic film and the complementary properties of the positive-negative is described. The mathematical model of the characteristics curve is proposed, and the relation between the contrast of level slicing, the γ value and the exposure is discussed. The experimental results are presented. The advantage of this method is that it employs noncoherent source and is very simple.