VISION MEASUREMENT FOR AMPLITUDE OF HIGH FREQUENCY VIBRATION

Abstract

Abstract: Mathematical modelal 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 realize the image measurement of vibration amplitudes. Measurement results can reach sub-pixel precision.

Key words: Amplitude measuring, Bessel function, Motion-blurred image, Spectrum, Stripe

CLC Number:

TB936 TP391

Wang Guobao;Wang Shigang;Yu Xinrui;Xu Wei. VISION MEASUREMENT FOR AMPLITUDE OF HIGH FREQUENCY VIBRATION[J]. , 2004, 40(4): 85-88.

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VISION MEASUREMENT FOR AMPLITUDE OF HIGH FREQUENCY VIBRATION

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