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IJSTR >> Volume 10 - Issue 8, August 2021 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Maximum Dynamic Range Of GCR Based On Metamerism And Application

[Full Text]

 

AUTHOR(S)

Guang-wu Lv, Peng Cao, Yuan Huang

 

KEYWORDS

Gray Component Replacement (GCR), Metamerism, Maximum Dynamic Range, Information Hiding.

 

ABSTRACT

It is of great value to reduce amount of ink usage and solve the restriction of color printing image quality of reproduction, the more accurate Gray Component replacement (GCR) mathematical model of CMYK color printing and maximum dynamic range of replacement has been researched. The scientific contribution of this paper is in using the metameric data of color space conversion collected through experiments, and then the ridge regression algorithm has been created for constructing a GCR mathematical model to characterize the optimal GCR maximum dynamic range of the metameric image printed which suitable to embed watermark information. The gradient descent method enables the C, M, Y (Cyan, Magenta, Yellow) values of metameric data solved by customizing the K (Carbon ink) channel data and the RGB color data, information hiding and printing anti-counterfeiting achieved by the K channel image, information will be recognized by applying special instruments in the Infrared wavelength range. This model is utilized to meet the challenge of printing information anti-counterfeiting and saving of printing ink, also deal with the basic problem of the maximum dynamic range of metameric GCR based on common CMYK ink. The effect of metameric image, with anti duplication and anti-counterfeiting properties, modulated be verified after printing and testing by this model. it, simultaneously, provided with the preponderance of good effect of information protection and full coverage of information.

 

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