Displacement measurement by phase-shifting digital holography with convolution technique

Hirotaka Otaki, Kenichi Sakaue, Masahisa Takashi

研究成果: Conference article

抄録

Phase-shifting digital holography enables the measurement of surface displacements on an object body. In the present study, the convolution integral technique is adopted to reconstruct holographic images. The most important feature of the technique is that spatial resolution is independent on the distance of image reconstruction, and is suitable for displacement measurement of a body with depth. Also, the resolution obtained by the technique is expected to be higher than that obtained by the conventional reconstruction technique. The displacement fields are obtained using phase difference data before and after deformation. In this paper, experimental results of the case of a cantilever beam show good agreement with theory, also the algorithm developed for the convolution integral technique is shown to be effective and useful to the image reconstruction.

本文言語English
論文番号66
ページ(範囲)407-413
ページ数7
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
5852 PART I
DOI
出版ステータスPublished - 2005 12 12
イベントThird International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics - Singapore, Singapore
継続期間: 2004 11 292004 12 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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