ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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12
Issue
vol 59 / DECEMBER, 2016
Article
UDC 681.51

MATHEMATICAL PRINCIPLES OF DIGITAL HALFTONING

V. N. Drozdov
ITMO Univresity, 197101, Saint-Petersburg, Russian Federation; Professor


E. A. Shefer
St. Petersburg State University of Technology and Design, Department of Automated Printery Equipment; Engineer


Abstract. The problem of replacement of continuously varying light flow reflected from absorbing filter on a substrate by two-level signal is considered. The problem is reduced to pulse-width modulation of two-dimensional signal. Various methods of signal conversion to binary raster data are analyzed.
Keywords: digital image processing, halftoning, transformation of spectra.