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  4. Optimized Selection of Image Tiles for Ink Spreading Calibration
 
conference paper

Optimized Selection of Image Tiles for Ink Spreading Calibration

Bugnon, T.  
•
Hersch, R. D.  
2011
Color Imaging Xvi: Displaying, Processing, Hardcopy, And Applications
Conference on Color Imaging XVI - Displaying, Processing, Hardcopy, and Applications

The Yule-Nielsen modified spectral Neugebauer model (YNSN) enables predicting reflectance spectra from ink surface coverages of halftones. In order to provide an improved prediction accuracy, this model is enhanced with an ink spreading model accounting for ink spreading in all superposition conditions (IS-YNSN). As any other spectral reflection prediction model, the IS-YNSN model is conceived to predict the reflection spectra of uniform patches. Instead of uniform patches, we investigate if tiles located within color images can be accurately predicted and how they can be used to facilitate the calibration of the ink spreading model. In the present contribution, we first detail an algorithm to automatically select image tiles as uniform as possible from color images by relying on the CMY or CMYK pixel values of these color tiles. We show that if these image tiles are uniform enough, they can be accurately predicted by the IS-YNSN model. The selection algorithm incorporates additional constraints and is verified on 6 different color images. We finally demonstrate that the ink spreading model can be calibrated with as few as 5 to 10 image tiles.

  • Details
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Type
conference paper
DOI
10.1117/12.872407
Web of Science ID

WOS:000293627700033

Author(s)
Bugnon, T.  
Hersch, R. D.  
Date Issued

2011

Publisher

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa

Published in
Color Imaging Xvi: Displaying, Processing, Hardcopy, And Applications
ISBN of the book

978-0-8194-8403-1

Series title/Series vol.

Proceedings of SPIE; 7866

Start page

786612

Subjects

color prints

•

color reproduction

•

dot gain

•

halftones

•

ink spreading

•

prediction model calibration

•

spectral reflection prediction

•

automatic selection

•

image tiles

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LSP  
Event nameEvent placeEvent date
Conference on Color Imaging XVI - Displaying, Processing, Hardcopy, and Applications

San Francisco, CA

Jan 24-27, 2011

Available on Infoscience
December 16, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/73648
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