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Study on experimental use of measuring thermal environmental by using a multispectral thermal infrared camera

Research Project

Project/Area Number 02555128
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 建築環境・環境工学
Research InstitutionTokyo Institute of Technology

Principal Investigator

HOYANO Akira  Tokyo Institute of Technology Environmental Engineering Associate professor, 大学院・総合理工学研究所, 助教授 (50108213)

Co-Investigator(Kenkyū-buntansha) KUROKAWA Takesi  NEC San-ei Co. ltd, 工業計測器技術本部, 次長
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 1991: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥3,800,000 (Direct Cost: ¥3,800,000)
Keywordsalgorithm for detecting of exfoliation of wall / image processing / multispectral thermal image / visible digital image / exfoliation of wall / frame integration / heat valance / 赤外線放射カメラ / 建築熱環境 / 表面温度
Research Abstract

In this study, the measurement algorithm for detecting exfoliation and crack of wall in outdoor environment was discussed with the experimental results by using a new thermal infrared camera and the calculated results by simulation of heat valance.
We have made a new thermal infrared camera which have spectral responsibility in the wavelength region of water vapor absorption and of atmospheric window before the measurement algorithm is developed. The CCD・camera with visible wavelength region was furnished with thermal infrared camera for estimating the reflectance index of solar radiation and the shape of stain of walls. It was shown that the effectiveness of a new thermal infrared camera was shown with following reasons from experimental results for detecting exfoliation and crack. 1) It was able to reduce the influence of reflectance of surroundings. 2) The estimated value of the reflectance index of solar radiation has enough accuracy when the thermal images are made by simulation of heat valance.
An effective measurement of the thermal infrared camera for detecting exfoliation of wall and analyzing method of thermal images were discussed by the calculated results of heat valance. The nomograph which shows temperature difference between exfoliated parts and normal parts was made with the simulation using HASP. The method which removes stains and cracks on the exfoliated part effectively was proposed. The simulated thermal images were made by FEM using spectral information of stains and cracks of the wall obtained from visible digital images.
The parts of exfoliation with removed stains were extracted by subtracting the simulated thermal image difference from the actual thermal-images. The effectiveness of this method has been shown as the comparison of the shape of actual exfoliation part with the shape of extracted image.
The most effective algorithm for detecting exfoliation of wall was made from the results of above discussion.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Akira HOYANO et al.: "Automatic correction method for atmospheric effect on thermal image and application to urban thermal environment" Proceedings of the 4th international conference on computing in civil and building engineering. 299-306 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "赤外線による外壁剥離検知に関する研究" 日本建築学会大会学術講演梗概集(東北). D. 1509-1510 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "熱画像における大気の自動補正アルゴリズムの開発" 日本建築学会大会学術講演梗概集(東北). D. 1511-1512 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "多重分光熱画像及び可視ディジタル画像の併用システムの提案とその有効正に関する検討(赤外線による外壁剥離検知に関する基磯的研究その1)" 日本建築学会大会学術講演梗概集(北陸). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "熱画像と熱収支シミュレ-ション画像を用いた壁面における表面性状の影響の除去に関する検討(赤外線による外壁剥離検知に関する基磯的研究その2)" 日本建築学会大会学術講演梗概集(北陸). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "画像処理による剥離抽出画像の作成と外壁剥離検知における総合診断アルゴリズムに関する検討(赤外線による外壁剥離検知に関する基磯的研究その3)" 日本建築学会大会学術講演梗概集(北陸). (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Mamoru Yokoyama, Akira Hoyano, Norimitu Takahara: "Study on detective system for exfoliated mortat on the wall by using a thermal infrared camera" Summary of technical papers of annual meeting architectural institute of Japan. 1509-1510 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuo Uchiyama, Akira Hoyano: "Development of algorithm for automatic correction of atmospheric effect on thermal images" Summary of technical papers of annual meeting architectural institute of Japan. 1511-1512 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Akira HOYANO, Kazuo UCHIYAMA: "Automatic Correction Method for Atmospheric Effect on Thermal Image and Application to Urban Thermal Environment" Proceeding of 4th International Conference on Computing in Civil and Building Engineering. July 29-31. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 梅干野 晁他: "赤外線による外壁剥離検知システムに関する研究" 日本建築学会大学学術講演梗概集(東北). D. 1509-1510 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 梅干野 晁他: "熱画像における大気の自動補正アルゴリズムの開発" 日本建築学会大学学術講演梗概集(東北). D. 1511-1512 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Akira HOYANO etal.: "Automatic Correction Method for Atmospheric Effect on Thermal Image and Application to Urban Thermal Environment" Proceedings of the 4th International Conference on Computing in Civil and Building Engineering. 299-306 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 川合 博英,梅干野 晃,笠井 豊: "赤外線放射カメラ(波長感度6.5〜8.6μm)の有効性について(多重分光赤外線画像による建築熱環境の計測その4)" 日本建築学会大会学術講演梗概集. 805-806 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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