Yule-Nielsen based multi-angle reflectance prediction of metallic halftones

Vahid Babaei; Roger D. Hersch

doi:10.1117/12.2076380

8 February 2015 Yule-Nielsen based multi-angle reflectance prediction of metallic halftones

Vahid Babaei, Roger D. Hersch

Proceedings Volume 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications; 93950H (2015) https://doi.org/10.1117/12.2076380
Event: SPIE/IS&T Electronic Imaging, 2015, San Francisco, California, United States

Abstract

Spectral prediction models are widely used for characterizing classical, almost transparent ink halftones printed on a diffuse substrate. Metallic-ink prints however reflect a significant portion of light in the specular direction. Due to their opaque nature, multi-color metallic halftones require juxtaposed halftoning methods where halftone dots of different colors are laid out side-by-side. In this work, we study the application of the Yule-Nielsen spectral Neugebauer (YNSN) model on metallic halftones in order to predict their reflectances. The model is calibrated separately at each considered illumination and observation angle. For each measuring geometry, there is a different Yule-Nielsen n-value. For traditional prints on paper, the n-value expresses the amount of optical dot gain. In the case of the metallic prints, the optical dot gain is much smaller than in paper prints. With the fitted n-values, we try to better understand the interaction of light and metallic halftones.

Citation Download Citation

Vahid Babaei and Roger D. Hersch "Yule-Nielsen based multi-angle reflectance prediction of metallic halftones", Proc. SPIE 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications, 93950H (8 February 2015); https://doi.org/10.1117/12.2076380

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available