A Proposal of Vibration Imaging Method for Vibrating Objects with Translation

Abstract

We propose a vibration imaging method for HFR-video-based localization of vibrating objects with large translations. When the ratio of the translation speed of a target to its vibration frequency is large, it is difficult to obtain its frequency response in image intensities because one or no waves are observable at the same pixel. Our method can precisely localize such moving objects with vibration by virtually translating multiple image sequences for pixel-level short time Fourier transform so that multiple waves are observable at the same pixel. Its effectiveness is demonstrated by analyzing several HFR videos for flying insects in real scenarios,