MATHEMATICAL PRINCIPLES OF DIGITAL HALFTONING
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.