[OPTICAL REVIEW Vol. 6, No. 1 (1999) 57-61]
Limitation of Color Samples for Spectral Estimation from Sensor Responses in Fine Art Painting
Norimichi TSUMURA, Hideki SATO, Takayuki HASEGAWA, Hideaki HANEISHI and Yoichi MIYAKE
Department of Information and Image Sciences, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba, 263-8522 Japan
(Received November 4, 1997; Accepted November 2, 1998)
A new technique is proposed to improve the way of selecting samples used to estimate spectral reflectance from sensor responses in multi-band images. This technique limits the samples of reflectance spectra based on the spectral reflectance estimated by the conventional estimation method, and estimates it again using the limited samples. Vector angle and distance among reflectance spectra as the criteria for the limitation can be applied to improve the estimation of reflectance spectra.
Key words : high quality imaging system, spectral estimation, color samples, oil color painting, computer color mixture