• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of accurate 3D measurement for trancelucent objects based on optical analysis

Research Project

Project/Area Number 17K00257
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Perceptual information processing
Research InstitutionHiroshima Institute of Technology

Principal Investigator

Ohtani Kozo  広島工業大学, 情報学部, 教授 (40351978)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords半透明物体 / 3次元形状計測 / 表面下散乱 / 光線追跡 / スポット光 / スポット光投影法 / 三次元形状計測 / 光線追跡法 / 計測工学 / 画像 / 形状計測
Outline of Final Research Achievements

In this study, we simulated the subsurface scattering of translucent objects using the ray tracing method, and examined a shape-measurement method for three-dimensional translucent objects by the spotlight projection method using the simulation results.
We modeled colloidal particles inside a translucent object and simulated the behavior of subsurface scattering using the ray tracing method. We found it was possible to visualize the behavior of light scattering inside the object. Moreover, parameters related to colloidal particles were estimated by a method focusing on the Tyndall phenomenon of a translucent object, and the correlation between the position of light incident on the translucent object and that of emitted light and statistically analyzed.
In the future, An optical 3-D shape measurement method for translucent object will be established using the results.

Academic Significance and Societal Importance of the Research Achievements

本研究では,半透明物体の3次元形状を高精度に計測する新たな光学的計測法の開発に取り組んだ.半透明物体に投影した光は内部で散乱し(表面下散乱),入射した位置とは異なる位置から出射する.そのため,半透明物体の光学的3次元計測は困難な問題の一つとなっていた.開発した計測法では,まず,半透明物体の光学特性をモデル化し,表面下散乱を光線追跡法でシミュレートする.そして,入射光位置と出射光位置の相関を統計的に解析し,実測した3次元計測データを補正するものである.いくつかの課題は残ったが,本手法が確立すれば,あらゆる光学特性をもつ物体へ適用可能な3Dスキャナを構築することができ,工学的価値は非常に大きい.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Liquid Refractive Index Measurement Based on Inverse Raytracing Using an Optical Angle Sensor2019

    • Author(s)
      Ohtani Kozo、Baba Mitsuru
    • Journal Title

      2019 12th Biomedical Engineering International Conference (BMEiCON)

      Pages: 1-4

    • DOI

      10.1109/bmeicon47515.2019.8990221

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Light scattering analysis for measuring the 3-D shape of a translucent object2019

    • Author(s)
      Ohtani Kozo、Baba Mitsuru
    • Journal Title

      2019 58th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE)

      Pages: 151-155

    • DOI

      10.23919/sice.2019.8859968

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 逆光線追跡法による半透明物体の3次元形状計測 -光線追跡シミュレータによる表面下散乱の解析2018

    • Author(s)
      大谷幸三,佐々木英二,新宮陽太,馬場充
    • Organizer
      第23回知能メカトロニクスワークショップ
    • Related Report
      2018 Research-status Report
  • [Presentation] Surface Finishing Inspection Using a Fisheye Camera System2017

    • Author(s)
      N.Kogumasaka, K.Ohtani and M.Baba
    • Organizer
      SICE Annual Conference 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 広島工業大学ホームページ

    • URL

      http://www.it-hiroshima.ac.jp/faculty/information/computer/teacher/ohtani_kozo/research/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi