| MEASUREMENT OF ANGULAR VIBRATION AMPLITUDE BY ACTIVELY BLURRED IMAGES |
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| 作者姓名： | GUAN Baiqing WANG Shigang LIU Chong LI Qian School of Mechanical Engineering Shanghai Jiaotong University Shanghai China |
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| 作者单位： | GUAN Baiqing WANG Shigang LIU Chong LI Qian School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200030，China |
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| 摘 要： | 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.
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| 关 键 词： | 振动 振幅 相机 视觉系统 |
MEASUREMENT OF ANGULAR VIBRATION AMPLITUDE BY ACTIVELY BLURRED IMAGES |
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| GUAN Baiqing WANG Shigang LIU Chong LI Qian School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai ,China.MEASUREMENT OF ANGULAR VIBRATION AMPLITUDE BY ACTIVELY BLURRED IMAGES[J].Chinese Journal of Mechanical Engineering,2007,20(1):77-81. |
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| Authors: | GUAN Baiqing WANG Shigang LIU Chong LI Qian |
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| Affiliation: | School of Mechanical Engineenng,Shanghai Jiaotong University, Shanghai 200030, China |
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| 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. |
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| Keywords: | Vibration measurement Rotational vibration Active vision Motion blur Geometric moment IMAGES AMPLITUDE VIBRATION Experimental provided validate scheme analytical results geometric moments motion blur images reference information polar estimate image plane extending exposure time approach |
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