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An alignment-free multispectral polarization imaging method using random photonic crystals

Research Project

Project/Area Number 21K11952
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 InstitutionUtsunomiya University

Principal Investigator

Shinoda Kazuma  宇都宮大学, 工学部, 准教授 (50639200)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords画像処理 / 分光イメージング / 偏光イメージング / フィルタアレイ / 圧縮センシング / フォトニック結晶 / 分光画像 / 偏光画像
Outline of Research at the Start

RGBを超えた分光および偏光画像の撮影はスマート農業や自動運転への貢献が期待されており,撮影系の小型化と製造容易性の確保が課題となっている.本研究では,世界的に前例のないランダム構造を持つフォトニック結晶フィルタを開発し,モノクロカメラに位置合わせをせずに取り付けるだけ(アライメントフリー)で,分光・偏光・RGB画像を単一露光で撮影できるイメージング法を創出する.

Outline of Final Research Achievements

In this study, we develop a photonic crystal filter with a random structure and establish an imaging method that can capture spectral, polarization, and RGB images with a single camera and a single exposure by simply mounting the filter on a monochrome imager without alignment. The proposed filter works as a specific multispectral polarization filter array due to its randomness no matter how the filter is moved or rotated on the sensor plane, so that the desired camera can be completed by simply mounting the filter without alignment. In this research period, both the filter pattern and the image restoration method were newly developed, and it was confirmed that high-quality spectropolarization images can be restored from a mosaic image.

Academic Significance and Societal Importance of the Research Achievements

本研究は,アライメントフリーの概念・ナノマテリアル・情報処理を相補的に融合することで分光偏光RGBの同時イメージングを達成することに本研究の独自性がある.本研究の成果は,フィルタアレイの枠を超えた新たなイメージング体系を学術的に開拓することに創造性があることに加え,小型・安価・製造容易な分光偏光RGBカメラの実現可能性を同時に示すことで,自動運転や小型内視鏡への貢献が期待できる点に社会的創造性がある.

Report

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

    (5 results)

All 2023 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (3 results) (of which Invited: 2 results)

  • [Journal Article] Unsupervised design for broadband multispectral and polarization filter array patterns2023

    • Author(s)
      Shinoda Kazuma
    • Journal Title

      Applied Optics

      Volume: 62 Issue: 27 Pages: 7145-7145

    • DOI

      10.1364/ao.499545

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] General demosaicking for multispectral polarization filter arrays using total generalized variation and weighted tensor nuclear norm minimization2021

    • Author(s)
      Kazuma Shinoda, Kota Yokoyama, and Madoka Hasegawa
    • Journal Title

      Applied Optics

      Volume: 60 Issue: 20 Pages: 5967-5976

    • DOI

      10.1364/ao.426263

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 分光・偏光・RGB画像の単一露光同時撮影2021

    • Author(s)
      篠田一馬
    • Organizer
      第150回オプティクス教育研究セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 分光・偏光・RGB同時撮影のためのフォトニックナノ構造体の開発2021

    • Author(s)
      篠田一馬
    • Organizer
      文部科学省ナノテクノロジープラットフォーム令和3年度利用成果発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] スナップショット分光偏光カメラの開発2021

    • Author(s)
      篠田一馬
    • Organizer
      レーザー学会学術講演会第42回年次大会
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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