Blar i NTNU Open på forfatter "Hirai, Keita"
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Appearance Reconstruction of Fluorescent Objects Based on Reference Geometric Factors
Tominaga, Shoji; Hirai, Keita; Horiuchi, Takahiko (Journal article; Peer reviewed, 2019)An approach is proposed for the reliable appearance reconstruction of fluorescent objects under arbitrary conditions of material and illuminant based on reference geometric factors. First, a large set of spectral images ... -
Appearance Reconstruction of Mutual Illumination Effect between Plane and Curved Fluorescent Objects
Tominaga, Shoji; Hirai, Keita; Horiuchi, Takahiko (Journal article; Peer reviewed, 2019)This paper considers appearance reconstruction of 3D fluorescent objects with mutual illumination effect. We examined the mutual illumination between flat plane and curved objects, by placing a cylinder on a flat plane. ... -
Estimation of Fluorescent Donaldson Matrices Using a Spectral Imaging System
Tominaga, Shoji; Hirai, Keita; Horiuchi, Takahiko (Journal article; Peer reviewed, 2018)The present paper proposes a method to estimate the bispectral Donaldson matrices of fluorescent objects in a scene with a spectral imaging system. Multiple ordinary light sources with continuous spectral-power distributions ... -
Spectral reconstruction of fluorescent objects with mutual illumination effects
Tominaga, Shoji; Hirai, Keita; Horiuchi, Takahiko (Peer reviewed; Journal article, 2019)An approach is proposed for appearance reconstruction of fluorescent objects with mutual illumination effects under different conditions of material and illumination. We focus on the problem of reconstructing a realistic ...