QUANTITATIVE EVALUATION OF VISUAL INFORMATION OF EXPOSED CONCRETES BY 2DIMENSIONAL FOURIER TRANSFORMATION

• KITAGAKI Ryoma

  Dept. of Architecture, Faculty of Engineering, University of Tokyo

• KANEMATSU Manabu

  Dept. of Architecture, Faculty of Engineering, University of Tokyo

• NOGUCHI Takafumi

  Dept. of Architecture, Faculty of Engineering, University of Tokyo

Bibliographic Information

Other Title

• 2次元フーリエ変換による打放しコンクリート視覚情報の定量的評価に関する研究
• 2ジゲン フーリエ ヘンカン ニ ヨル ウチハナシ コンクリート シカク ジョウホウ ノ テイリョウテキ ヒョウカ ニ カンスル ケンキュウ

Abstract

Requirement of long-term use of existing buildings has been increasing in aspect of environmental and economical issues, and the visual impression of building materials from the view point of aesthetics is considered as an important factor for long-term use of buildings. In this research, the new methodology by using 2dimensional Fourier Transformation has been developed for evaluation of stains on exposed concrete surfaces. As a result, various shapes of stains on the constant distance have been explained by the slope of power spectra by frequencies which make up a digital image including stains.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 70 (597), 33-38, 2005

  Architectural Institute of Japan

Keywords

• 2dimensional Fourier Transform
• Image Processing
• Quantitative Evaluation
• Aptitude of Stain
• Power Spectrum

Details

• CRID: 1390001205638102400
• NII Article ID: 110004839828
• NII Book ID: AN10438559
• DOI: 10.3130/aijs.70.33_3
• ISSN: 18818153
• ISSN: 13404202
• ISSN: http://id.crossref.org/issn/13404202
• NDL BIB ID: 7719231
• Web Site: http://id.ndl.go.jp/bib/7719231
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7719231
• Web Site: https://www.jstage.jst.go.jp/article/aijs/70/597/70_KJ00004392968/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed