|
GUAN Baiqing
WANG Shigang
LIU Chong
LI Qian
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200030, China
|
|
|
MEASUREMENT OF ANGULAR VIBRATION
AMPLITUDE BY ACTIVELY BLURRED IMAGES*
Abstract:
A novel motion-blur-based method for measuring the angular amplitude of a high-frequency rotational vibration is schemed. The proposed approach combines the active vision concept and the mechanism of motion-from-blur, generates motion blur on the image plane actively by extending exposure time, and utilizes the motion blur information in polar images to estimate the angular amplitude of a high-frequency rotational vibration. This method obtains the analytical results of the angular vibration amplitude from the geometric moments of a motion blurred polar image and an unblurred image for reference. Experimental results are provided to validate the presented scheme.f
Key words:
Vibration measurement Rotational vibration Active vision Motion blur
Geometric moment
|