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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 18 — Jun. 20, 2014
  • pp: 4072–4078

Research on the relationship of grayscale between digital grating and the host image

Qi Wang and Xiaobo Wang  »View Author Affiliations


Applied Optics, Vol. 53, Issue 18, pp. 4072-4078 (2014)
http://dx.doi.org/10.1364/AO.53.004072


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Abstract

To get the most clear security image for optimal security, the relationship of grayscale between the digital grating and host image was studied using the optical properties of the transmission grating. In this anticounterfeiting technology, the correspondence between the digital grating and the host image was analyzed. The same security patterns were embedded into eight host images of different tones. The clarity of the extracted security information was evaluated to determine the best relationship of grayscale between digital grating and host image. Studies have shown that the security of a bright tone image is better. When the grayscale of the host image is 40%, the anticounterfeiting effectiveness is the best; when the grayscale is more than 60%, this anticounterfeiting technology no longer applies. At the same time, the corresponding curves of the grayscale between the digital grating and the host image with common screen size were provided and the mathematical model for expressing their correlation was established.

© 2014 Optical Society of America

OCIS Codes
(040.1880) Detectors : Detection
(050.2770) Diffraction and gratings : Gratings
(100.2000) Image processing : Digital image processing
(100.2810) Image processing : Halftone image reproduction

ToC Category:
Image Processing

History
Original Manuscript: February 18, 2014
Revised Manuscript: April 30, 2014
Manuscript Accepted: May 13, 2014
Published: June 20, 2014

Citation
Qi Wang and Xiaobo Wang, "Research on the relationship of grayscale between digital grating and the host image," Appl. Opt. 53, 4072-4078 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-18-4072


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