RT Journal Article T1 Energy optimization of a light projection system for buildings that virtually restores artworks A1 Vázquez Moliní, Daniel A1 Álvarez Fernández-Balbuena, Antonio A1 Canabal Boutureira, Héctor A1 Muro, Carmen A1 Durmus, D A1 Davis, w A1 Benítez Iglesias, Antonio Jesús A1 Mayorga Pinilla, Santiago AB The need to achieve energy efficiency standards in the lighting systems of buildings makes it necessary to optimize all aspects of them. Here, the development of a light projection system that achieves this goal by studying and modifying the spectral output, compared to conventional illumination, is described. A lighting system that estimates the reflectance characteristics of artwork and emits optimized lighting can reduce light absorption. A damage-minimizing point-by-point light projection system is developed using an optimization algorithm, to improve the appearance of the surfaces of artworks whose color has faded. In this case, a simulation of an aged oil painting was made by manipulating the original photograph, which was printed and to which the proposed system was applied. The results show that, when the aged printed image is illuminated with the optimized light source, it appears indistinguishable from the non-aged oil painting. PB Elsevier SN 2212-054 YR 2019 FD 2019-11 LK https://hdl.handle.net/20.500.14352/5982 UL https://hdl.handle.net/20.500.14352/5982 LA eng NO Received 18 June 2019, Revised 5 November 2019, Accepted 22 November 2019, Available online 27 November 2019. NO Ministerio de Ciencia e Innovación (MICINN) DS Docta Complutense RD 1 may 2024