A High-Speed Imaging Method Based on Compressive Sensing for Sound Extraction Using a Low-Speed Camera.

ABSTRACT: This paper reports an efficient method for sound extraction from high-speed light spot videos reconstructed from the coded light spot images captured with a low-speed camera based on compressive sensing, but at the expense of consuming time. The proposed method first gets the high-speed video of the light spot that is illuminated on the vibrating target caused by sound. Then the centroid of the light spot is used to recover the sound. Simulations of the proposed method are carried out and experimental results are demonstrated. The results show that high-speed videos with a frame rate of 2000 Hz can be reconstructed with a low-speed (100 Hz) charge-coupled device (CCD) camera, which is randomly modulated by a digital micro-mirror device (DMD) 20 times during each exposure time. This means a

SUBMITTER: Zhu G 

PROVIDER: S-EPMC5982989 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature