2012 Fiscal Year Final Research Report

Investigation of methods for decision of original coloring from monochrome photographs

Research Project

Project/Area Number	23650573
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Cultural property science
Research Institution	Independent Administrative Institution National Institutes for Cultural Heritage Tokyo National Research Institute for Cultural Properties
Principal Investigator	YOSHIDA Naoto 独立行政法人国立文化財機構東京文化財研究所, 保存修復科学センター, 主任研究員 (80370998)
Co-Investigator(Kenkyū-buntansha)	MATSUSHIMA Tomohide 高知大学, 総合教育センター, 特任准教授 (60533594) KARINOKA Yoko , 日本学術振興会・特別研究員 (40570065)
Project Period (FY)	2011 – 2012
Keywords	材質分析 / 彩色文化財 / 画像解析
Research Abstract	Based on an assumption that the black and white contrasts of monochrome photographs are dependent on (i) the characteristic of photosensitive materials, (ii) illumination spectra of light source, it was found that taking monochrome photographs of coloring samples under the same conditions as the reference photographs and comparing the contrasts of both can lead to the decision of original coloring. Using this method, decision of the original coloring of a portrait of a king of Ryukyu Kingdom Sho-Iku (1813-1847), which has been reported to have been lost during the World War II, was carried out.

(4 results)