TY - JOUR
T1 - A method for the registration of spectral images of paintings and its evaluation
AU - Zacharopoulos, Athanasios
AU - Hatzigiannakis, Kostas
AU - Karamaoynas, Polykarpos
AU - Papadakis, Vassilis M.
AU - Andrianakis, Michalis
AU - Melessanaki, Kristalia
AU - Zabulis, Xenophon
PY - 2018
Y1 - 2018
N2 - This work concerns the automatic registration of spectral images of paintings upon planar, or approximately planar, surfaces. An approach that capitalizes upon this planarity is proposed, which estimates homography transforms that register the spectral images into an aligned spectral cube. Homography estimation methods are comparatively evaluated for this purpose. A non-linear, robust estimation method that is based on keypoint features is adopted, as the most accurate. A marker-based, quantitative evaluation method is proposed for the measurement of multispectral image registration accuracy and, in turn, utilized for the comparison of the proposed registration method to the state of the art. For the same purpose, characteristic for this application domain, benchmark datasets that are annotated with correctly corresponding points have been compiled and are publicly availed.
AB - This work concerns the automatic registration of spectral images of paintings upon planar, or approximately planar, surfaces. An approach that capitalizes upon this planarity is proposed, which estimates homography transforms that register the spectral images into an aligned spectral cube. Homography estimation methods are comparatively evaluated for this purpose. A non-linear, robust estimation method that is based on keypoint features is adopted, as the most accurate. A marker-based, quantitative evaluation method is proposed for the measurement of multispectral image registration accuracy and, in turn, utilized for the comparison of the proposed registration method to the state of the art. For the same purpose, characteristic for this application domain, benchmark datasets that are annotated with correctly corresponding points have been compiled and are publicly availed.
KW - Image registration
KW - Paintings
KW - Spectral cube
KW - Spectral imaging
KW - Spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85026760950&partnerID=8YFLogxK
U2 - 10.1016/j.culher.2017.07.004
DO - 10.1016/j.culher.2017.07.004
M3 - Article
AN - SCOPUS:85026760950
SN - 1296-2074
VL - 29
SP - 10
EP - 18
JO - Journal of Cultural Heritage
JF - Journal of Cultural Heritage
ER -