Blar i NTNU Open på forfatter "Tominaga, Shoji"
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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. ... -
Appearance synthesis of fluorescent objects with mutual illumination effects
Tominaga, Shoji; Guarnera, Giuseppe Claudio (Peer reviewed; Journal article, 2021)We propose an approach for the appearance synthesis of objects with matte surfaces made of arbitrary fluorescent materials, accounting for mutual illumination. We solve the problem of rendering realistic scene appearances ... -
Bidirectional Reflectance Measurement and Reflection Model Fitting of Complex Materials Using an Image-Based Measurement Setup
Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter; Tominaga, Shoji (Journal article; Peer reviewed, 2018)Materials with a complex visual appearance, like goniochromatic or non-diffuse, are widely used for the packaging industry. Measuring optical properties of such materials requires a bidirectional approach, and therefore, ... -
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 ... -
Evaluating an image-based bidirectional reflectance distribution function measurement setup
Sole, Aditya Suneel; Farup, Ivar; Nussbaum, Peter; Tominaga, Shoji (Journal article; Peer reviewed, 2018)We evaluate an image-based multiangle bidirectional reflectance distribution function measurement setup by comparing it to measurements from two commercially available goniospectrophotometers. The image-based setup uses ... -
Measurement and estimation of spectral sensitivity functions for mobile phone cameras
Tominaga, Shoji; Nishi, Shogo; Ohtera, Ryo (Journal article; Peer reviewed, 2021) -
Measuring, Modeling, and Reproducing Material Appearance from Specular Profile
Tominaga, Shoji; Guarnera, Giuseppe Claudio (Journal article; Peer reviewed, 2019)A method is proposed for measuring, modeling, and reproducing material appearance from the specular profile representing reflectance distribution around a specular highlight. Our method is aimed at opaque materials with a ... -
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 ... -
Spectral Reflectance Estimation from Camera Responses Using Local Optimal Dataset
Tominaga, Shoji; Sakai, Hideaki (Peer reviewed; Journal article, 2023)A novel method is proposed to estimate surface-spectral reflectance from camera responses using a local optimal reflectance dataset. We adopt a multispectral imaging system that involves an RGB camera capturing multiple ...