Open AccessNovel approach for extending the depth of field of Barcode decoders by using RGB channels of information
Author(s) -
Benjamin Milgrom,
Naim Konforti,
Michael Golub,
Emanuel Marom
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.017027
Subject(s) - barcode , rgb color model , optics , channel (broadcasting) , computer science , detector , lens (geology) , depth of field , phase imaging , field (mathematics) , computer vision , physics , telecommunications , microscopy , mathematics , pure mathematics , operating system
A specially designed phase mask embedded in the lens assembly of an imaging system is shown to provide different response in the three major color bands, R, G and B of a detector array. Each channel provides optimal performance for different depth of field regions, such that the three channels jointly provide an imaging system with wide depth of field. The approach is useful in particular for Barcode imagers.