Vision measurement for amplitude of high frequency vibration

Guobao Wang, Shigang Wang, Xinrui Yu, Wei Xu

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Mathematical models are researched in space domain and frequency domain for motion-blurred image. Series of dark stripes can be found on spectrums of motion-blurred images of a vibrating object with high frequency, which is due to zero value of Bessel function. Adding 2-D Fourier transform on a vibration-blurred image recorded by CCD, linear stripes are inspected and located in spectrum images and the image measurement of vibration amplitudes are realized. Measurement results can reach sub-pixel precision.

Original languageEnglish (US)
Pages (from-to)85-88
Number of pages4
JournalJixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
Volume40
Issue number4
StatePublished - Apr 1 2004
Externally publishedYes

Keywords

  • Amplitude measuring
  • Bessel function
  • Motion-blurred image
  • Spectrum
  • Stripe

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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