Displacement measurement by phase-shifting digital holography with convolution technique

Hirotaka Otaki, Kenichi Sakaue, Masahisa Takashi

研究成果: Conference article査読


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.

ジャーナルProceedings of SPIE - The International Society for Optical Engineering
5852 PART I
出版ステータスPublished - 2005
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月 292004 12月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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