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- W2419337660 abstract "In this study, a high-speed camera system is developed to complete the vibration measurement in real time and to overcome the mass introduced by conventional contact measurements. The proposed system consists of a notebook computer and a high-speed camera which can capture the images as many as 1000 frames per second. In order to process the captured images in the computer, the normalized cross-correlation (NCC) template tracking algorithm with subpixel accuracy is introduced. Additionally, a modified local search algorithm based on the NCC is proposed to reduce the computation time and to increase efficiency significantly. The modified algorithm can rapidly accomplish one displacement extraction 10 times faster than the traditional template matching without installing any target panel onto the structures. Two experiments were carried out under laboratory and outdoor conditions to validate the accuracy and efficiency of the system performance in practice. The results demonstrated the high accuracy and efficiency of the camera system in extracting vibrating signals." @default.
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- W2419337660 date "2015-09-17" @default.
- W2419337660 modified "2023-09-26" @default.
- W2419337660 title "Vibration extraction based on fast NCC algorithm and high-speed camera" @default.
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- W2419337660 doi "https://doi.org/10.1364/ao.54.008198" @default.
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