Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2011 Feb 15;36(4):526-8. doi: 10.1364/OL.36.000526.

Dynamic phase evaluation in sparse-sampled temporal speckle pattern sequence.

Author information

  • 1State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou, Zhejiang Province, China.


The rapid progress of modern manufacturing technology has posed stringent requirements for inspecting techniques for vibration characterization and dynamic testing. Because of its simplicity, accuracy, and whole-field character, speckle interferometry has served as one of the major techniques for dynamic measurement, where normally a dense-sampled temporal speckle sequence is captured for phase retrieval using Fourier or wavelet transforms. In this Letter, a method is proposed for phase evaluation of sparse-sampled speckle patterns when the sampling rate is lower than two points per temporal cycle. Dynamic experiments using a high-speed camera demonstrated the effectiveness of the proposed method for complicated wrapped phase retrieval in electronic/digital speckle pattern interferometry.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Write to the Help Desk