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An Automatic Image Stitching Method for Visual Inspection of Concrete Structures

Research Project

Project/Area Number 24760364
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionYamaguchi University

Principal Investigator

FUJITA Yusuke  山口大学, 医学(系)研究科(研究院), 准教授 (40509527)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords画像処理 / コンクリート構造物 / 維持管理 / 画像合成 / ひび割れ / 外観検査
Research Abstract

In this study, an image stitching method for effective visual inspection of the concrete structure is developed. At first, a self-calibration method using straight lines on concrete surfaces was proposed. Even if the focal distance of an image is different from that of other images, lens distortion are corrected automatically before image stitching. Further, images of multiple views are used for image stitching, to acquire a composite image having a supplemented dead angle region part. Thus, the dead angle area of an overview image is canceled and the operator can recognize the damages such as cracks within the dead angle area of the overview image. After that, the contrasts of each pixel existing in the same position between the synthesized image data are compared with each other, to take out the pixel whose contrast is maximum and create an overview image data, to improve contrast the composite image.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (4 results)

All 2014 2012

All Presentation (4 results)

  • [Presentation] コンクリート構造物の外観検査のための画像合成法2014

    • Author(s)
      和田脩平,藤田悠介,浜本義彦
    • Organizer
      情報処理学会第76回全国大会
    • Place of Presentation
      東京電機大学(足立区)(情報処理学会第76回全国大会予稿集,2,355-356)
    • Related Report
      2013 Final Research Report
  • [Presentation] コンクリート構造物の外観検査のための画像合成法2014

    • Author(s)
      和田脩平,藤田悠介,浜本義彦
    • Organizer
      情報処理学会第76回全国大会
    • Place of Presentation
      東京電機大学(足立区)
    • Related Report
      2013 Annual Research Report
  • [Presentation] 画像処理によるコンクリート構造物のひび割れ幅の分類2012

    • Author(s)
      藤田悠介,中村秀明,浜本義彦
    • Organizer
      コンクリート工学年次論文集
    • Place of Presentation
      広島国際会議場(広島市)(Vol. 34, No. 1)
    • Related Report
      2013 Final Research Report
  • [Presentation] 画像処理によるコンクリート構造物のひび割れ幅の分類2012

    • Author(s)
      藤田 悠介, 中村 秀明, 浜本 義彦
    • Organizer
      コンクリート工学年次論文集
    • Place of Presentation
      広島国際会議場
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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