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Development of techniques to measure, analyze, and reproduce the appearance of glossy and fluorescent objects

Research Project

Project/Area Number 20K11893
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 61010:Perceptual information processing-related
Research InstitutionNagano University

Principal Investigator

Tominaga Shoji  長野大学, 企業情報学部, 研究員 (10103342)

Co-Investigator(Kenkyū-buntansha) 田中 法博  長野大学, 企業情報学部, 教授 (90387415)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords質感 / 光沢 / 蛍光 / アピアランス / HDR画像 / 分光イメージング / 植物蛍光 / HDR画像 / 分光反射率 / 質感計測 / 質感解析 / 質感再現 / 光沢と蛍光 / 蛍光物体 / 光沢物体 / 見えの計測・解析・再現
Outline of Research at the Start

質感に重要な役割を果たす光沢と蛍光を有する物体の見えを計測・解析・再現する総合的な技法を確立する.
質感計測では,スペクトルイメージング系と,光沢鏡面プロファイルを計測するシステムを構築する.また漆器を多数撮影して漆器の画像データベースを作成する.
質感解析では,物体の反射・発光特性を記述するための数理モデルを構築する.漆器の画像データベースにCNNを適用して質感特徴を抽出する.さらに材質の識別と同定,反射・発光特性を推定するアルゴリズムを開発する.
質感再現では,質感の数量化の妥当性を検証し,レンダリングにより質感の映像再現で評価を行う.最後に,質感マネージメントシステムを完成させる.

Outline of Final Research Achievements

This study aimed to develop methods to measure, analyze, and reproduce the appearance of objects with gloss and fluorescence. In appearance measurement, we constructed a spectral imaging system that enables to control the light source and camera. We also constructed a system to measure object surfaces with strong gloss using a gloss meter. We further created an HDR image database of metals. In appearance analysis, we considered a mathematical model that describes the reflection and luminescence characteristics of fluorescent objects. A CNN approach was proposed to extract the appearance features of the HDR image database and predict the HDR images from LDR images. In appearance reproduction, we developed a rendering method for the appearances of fluorescent objects and metal objects with a strong gloss. The validity was confirmed through visual evaluation experiments.

Academic Significance and Societal Importance of the Research Achievements

蛍光の開発手法は実用的な機器の開発につながり,また色を正しく予測できるので,複数蛍光物体の展示に有用である.金属の開発手法は,現存する飽和したLDR画像からHDR画像を生成でき,映像産業への応用が期待できる.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (34 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (19 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 16 results,  Open Access: 6 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] High Dynamic Range Image Reconstruction from Saturated Images of Metallic Objects2024

    • Author(s)
      Tominaga Shoji、Horiuchi Takahiko
    • Journal Title

      Journal of Imaging

      Volume: 10 Issue: 4 Pages: 1-17

    • DOI

      10.3390/jimaging10040092

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 歴史調査に基づく歴史文化財の 3DCG再現2024

    • Author(s)
      望月宏祐,田中法博
    • Journal Title

      色彩学

      Volume: 3 Pages: 21-26

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] An HDR image database construction and LDR-to-HDR mapping for metallic objects2023

    • Author(s)
      Tominaga Shoji、Horiuchi Takahiko
    • Journal Title

      Proc. 31st Color and Imaging Conference

      Volume: 1 Pages: 138-143

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spectral Reflectance Estimation from Camera Responses Using Local Optimal Dataset2023

    • Author(s)
      Tominaga Shoji、Sakai Hideaki
    • Journal Title

      Journal of Imaging

      Volume: 9 Issue: 2 Pages: 47-47

    • DOI

      10.3390/jimaging9020047

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 歴史建造物の3DCGレンダリングにおける GPUアーキテクチャの比較2023

    • Author(s)
      望月宏祐、田中法博
    • Journal Title

      長野大学紀要

      Volume: 44 Pages: 133-138

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improved method for spectral reflectance estimation and application to mobile phone cameras2022

    • Author(s)
      Tominaga Shoji、Nishi Shogo、Ohtera Ryo、Sakai Hideaki
    • Journal Title

      Journal of the Optical Society of America A

      Volume: 39 Issue: 3 Pages: 494-494

    • DOI

      10.1364/josaa.449347

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Appearance estimation and reconstruction of glossy object surfaces based on the dichromatic reflection model2022

    • Author(s)
      Tominaga Shoji、Yong Roseline Kim Fong
    • Journal Title

      Color Research and Application

      Volume: 47 Issue: 6 Pages: 1313-1329

    • DOI

      10.1002/col.22824

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spectral Reflectance Estimation with Smoothness Constraint2022

    • Author(s)
      Tominaga Shoji、Nishi Shogo、Ohtera Ryo、Sakai Hideaki
    • Journal Title

      Color and Imaging Conference

      Volume: 30 Issue: 1 Pages: 141-146

    • DOI

      10.2352/cic.2022.30.1.26

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] VR技術と反射特性計測に基づいた肌と化粧品の質感表現2022

    • Author(s)
      田中法博
    • Journal Title

      Fragrance Journal

      Volume: 60

    • Related Report
      2021 Research-status Report
  • [Journal Article] AI 技術を用いた肌の反射特性解析と化粧品への応用2022

    • Author(s)
      田中法博
    • Journal Title

      Cosmetic Stage

      Volume: 15 Pages: 29-35

    • Related Report
      2021 Research-status Report
  • [Journal Article] Measurement and Estimation of Spectral Sensitivity Functions for Mobile Phone Cameras2021

    • Author(s)
      Tominaga Shoji、Nishi Shogo、Ohtera Ryo
    • Journal Title

      Sensors

      Volume: 21 Issue: 15 Pages: 4985-4985

    • DOI

      10.3390/s21154985

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of a System to Measure the Optical Properties of Facial Skin using a 3D Camera and Projector2021

    • Author(s)
      Kikuchi Kumiko、Tominaga Shoji、Hardeberg Jon Y.
    • Journal Title

      Journal of Imaging Science and Technology

      Volume: 65 Issue: 5 Pages: 050403-1-050403-15

    • DOI

      10.2352/j.imagingsci.technol.2021.65.5.050403

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Appearance synthesis of fluorescent objects with mutual illumination effects2021

    • Author(s)
      Tominaga Shoji、Guarnera Giuseppe Claudio
    • Journal Title

      Color Research & Application

      Volume: 47 Issue: 3 Pages: 615-629

    • DOI

      10.1002/col.22747

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectral-Reflectance Estimation under Multiple Light Sources2021

    • Author(s)
      Tominaga Shoji
    • Journal Title

      Color and Imaging Conference

      Volume: 29 Issue: 1 Pages: 25-30

    • DOI

      10.2352/issn.2169-2629.2021.29.25

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation of bispectral characteristics of fluorescent objects based on multispectral imaging data2021

    • Author(s)
      Tominaga Shoji
    • Journal Title

      Optical Engineering

      Volume: 60 Issue: 03

    • DOI

      10.1117/1.oe.60.3.033102

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Difference in Impression between Genuine and Artificial Leather: Quantifying the Feeling of Authenticity2020

    • Author(s)
      Watanabe Shuhei、Tominaga Shoji、Horiuchi Takahiko
    • Journal Title

      Journal of Perceptual Imaging

      Volume: 3 Issue: 2 Pages: 020501-1-020501-11

    • DOI

      10.2352/j.percept.imaging.2020.3.2.020501

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spectral Estimation of Multiple Light Sources based on Highlight Detection2020

    • Author(s)
      Tominaga Shoji、Hirai Keita、Horiuchi Takahiko
    • Journal Title

      Journal of Imaging Science and Technology

      Volume: 64 Issue: 5 Pages: 106-109

    • DOI

      10.2352/j.imagingsci.technol.2020.64.5.050408

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation Method of Fluorescent Donaldson Matrices Based on Multispectral Imaging Data2020

    • Author(s)
      Tominaga Shoji
    • Journal Title

      Color and Imaging Conference

      Volume: 2020 Issue: 1 Pages: 227-231

    • DOI

      10.2352/issn.2169-2629.2020.28.36

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Computer Graphics Reproduction of Ultraviolet Degraded Materials Using a Multi-spectral Reflection Model2020

    • Author(s)
      Tanaka Norihiro, Kosuke Mochizuki
    • Journal Title

      Proc. Kansei Engineering and Emotion Research

      Volume: 2020 Pages: 1-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] A method for estimating spectral reflectance from camera responses using local optimal dataset and neural network2024

    • Author(s)
      Tominaga Shoji、Sakai Hideaki
    • Organizer
      Electronic Imaging Symposium 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 相互照明効果を有する蛍光物体のアピアランス生成2024

    • Author(s)
      富永昌二
    • Organizer
      日本色彩学会視覚情報基礎研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 光反射計測と3DCG技術に基づいた文化財デジタルアーカイブ2023

    • Author(s)
      田中法博
    • Organizer
      光学系四学会関西支部「光と芸術」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 3DCG 技術に基づいた化粧シミュレーションアプリの実用化に向けた検証2023

    • Author(s)
      池野太心,下田大貴,小林空美,望月宏祐,田中法博
    • Organizer
      日本色彩学会 画像色彩研究会 2023年度研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 化粧品と肌の 3DCG 再現のための光反射モデルの検討と実装2023

    • Author(s)
      池野太心、西村綾莉、望月宏祐、田中法博
    • Organizer
      日 本色彩学会画像色彩研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Estimating spectral reflectances using mobile phone cameras2022

    • Author(s)
      Tominaga Shoji, Nishi Shogo, Ohtera Ryo
    • Organizer
      IS&T International Sympo. on Electronic Imaging 2022, Color Imaging XXVII
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 光反射モデルに基づいた化粧塗膜の視覚的質感の計測とCG再現2022

    • Author(s)
      田中法博,望月宏祐
    • Organizer
      情報処理学会第84回全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 小諸城の建造物と地形の3次元モデル構築2022

    • Author(s)
      望月宏祐,田中法博
    • Organizer
      情報処理学会第84回全国大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Appearance Reconstruction of Fluorescent Objects - From Spectral Image To Video -2021

    • Author(s)
      Tominaga Shoji
    • Organizer
      The 29th Color and Imaging Conference, Workshop “Color: from images to videos”
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Estimating Spectral Sensitivities of a Smartphone Camera2021

    • Author(s)
      Tominaga Shoji, Nishi Shogo, Ohtera Ryo
    • Organizer
      IS&T International Sympo. on Electronic Imaging 2021, Color Imaging XXVI
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 古文書と計測情報に基づいた小諸城内の門の3DCG 復元2021

    • Author(s)
      林風花,亀山歩,望月宏祐,田中法博
    • Organizer
      日本色彩学会画像色彩研究会研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 分光放射輝度計を用いた人の肌の変角分光計測2021

    • Author(s)
      西村綾莉,滝澤楓,望月宏祐,田中法博
    • Organizer
      日本色彩学会画像色彩研究会研究発表会
    • Related Report
      2020 Research-status Report
  • [Presentation] 絹織物の分光反射率計測法と色再現2020

    • Author(s)
      望月宏祐,田中法博
    • Organizer
      画像電子学会年次大会
    • Related Report
      2020 Research-status Report
  • [Remarks]

    • URL

      https://researchmap.jp/shojitominaga

    • Related Report
      2023 Annual Research Report
  • [Remarks]

    • URL

      http://www.ntnu.edu/employees/shoji.tominaga

    • Related Report
      2023 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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