Koichi TAKASE^*, Norimichi TSUMURA, Toshiya NAKAGUCHI and Yoichi MIYAKE

Department of Information and Image Sciences, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan

(Received September 28, 2004; Accepted November 17, 2004)

We propose a fast estimation algorithm for calculation of a reflectance map from measured radiances based on Wiener estimation technique. This technique uses many sample data of reflectance maps to decide transformation for accurate estimation. Reflectance maps of objects are estimated rapidly by linear operation between a vector of measured radiances and an estimation matrix previously calculated based on the sample data.

Key words: reflectance map, Wiener estimation, BRDF, light field, linear operation

^*E-mail address: takase@graduate.chiba-u.jp