Image-based Discrimination and Spatial Non-uniformity Analysis of Effect Coatings

Jiří Filip, Radomír Vávra, Frank Maile, Bill Eibon

2019

Abstract

Various industries are striving for novel, more reliable but still efficient approaches to coatings characterization. Majority of industrial applications use portable instruments for characterization of effect coatings. They typically capture a limited set of in-plane geometries and have limited ability to reliably characterize gonio-apparent behavior typical for such coatings. The instruments rely mostly on color and reflectance characteristics without using a texture information across the coating plane. In this paper, we propose image-based method that counts numbers of effective pigments and their active area. First, we captured appearance of eight effect coatings featuring four different pigment materials, in in-plane and out-of-plane geometries. We used a gonioreflectometer for fixed viewing and varying illumination angles. Our analysis has shown that the proposed method is able to clearly distinguish pigment materials and coating applications in both in-plane and out-of-plane geometries. Finally, we show an application of our method to analysis of spatial non-uniformity, i.e. cloudiness or mottling, across a coated panel.

Paper Citation

in Harvard Style

Filip J., Vávra R., Maile F. and Eibon B. (2019). Image-based Discrimination and Spatial Non-uniformity Analysis of Effect Coatings.In Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM, ISBN 978-989-758-351-3, pages 683-690. DOI: 10.5220/0007413906830690

in Bibtex Style

@conference{icpram19,
author={Jiří Filip and Radomír Vávra and Frank Maile and Bill Eibon},
title={Image-based Discrimination and Spatial Non-uniformity Analysis of Effect Coatings},
booktitle={Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,},
year={2019},
pages={683-690},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007413906830690},
isbn={978-989-758-351-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods - Volume 1: ICPRAM,
TI - Image-based Discrimination and Spatial Non-uniformity Analysis of Effect Coatings
SN - 978-989-758-351-3
AU - Filip J.
AU - Vávra R.
AU - Maile F.
AU - Eibon B.
PY - 2019
SP - 683
EP - 690
DO - 10.5220/0007413906830690