measuring the angular velocity of a propeller with video camera using electronic rolling shutter
Clicks: 144
ID: 186824
2018
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Abstract
Noncontact measurement for rotational motion has advantages over the traditional method which measures rotational motion by means of installing some devices on the object, such as a rotary encoder. Cameras can be employed as remote monitoring or inspecting sensors to measure the angular velocity of a propeller because of their commonplace availability, simplicity, and potentially low cost. A defect of the measurement with cameras is to process the massive data generated by cameras. In order to reduce the collected data from the camera, a camera using ERS (electronic rolling shutter) is applied to measure angular velocities which are higher than the speed of the camera. The effect of rolling shutter can induce geometric distortion in the image, when the propeller rotates during capturing an image. In order to reveal the relationship between the angular velocity and the image distortion, a rotation model has been established. The proposed method was applied to measure the angular velocities of the two-blade propeller and the multiblade propeller. The experimental results showed that this method could detect the angular velocities which were higher than the camera speed, and the accuracy was acceptable.
| Reference Key |
zhao2018journalmeasuring
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|---|---|
| Authors | ;Yipeng Zhao;Yongbin Li;Shijie Guo;Tiejun Li |
| Journal | BMC infectious diseases |
| Year | 2018 |
| DOI |
10.1155/2018/1037083
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| URL | |
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