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Image-based method for the angular vibration measurement of a linear array camera

机译：基于图像的线性阵列相机角振动测量方法

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摘要

Measurements of angular vibration of aerial cameras in a variety of operating conditions are critical to analyze the performance of the vibration isolation system. Instead of using an additional optical system to measure the angular motion of the camera, an image-based and easy-to-implement method is proposed for the linear array camera to measure the image motions captured by the camera directly. The natural frequencies of the vibration isolation were also measured by laboratory vibration test. For image vibration measuring, the angular vibration is represented in image motion by the relationship between the image motion and angular motion of the camera. Based on the push-broom imaging principle, the image motion at the edge of the foreground image of the linear object is extracted using image processing technology including image segment and edge detection methods. Then the image motion is analyzed in the time and frequency domains. The proposed method has been successfully demonstrated for the angular vibration measurement by a flight test. The results of the vibration sensors and the position and orientation system of the flight tests are also given to validate the effectiveness and accuracy of the proposed approach. (C) 2021 Optical Society of America
机译：航空相机在各种工作条件下的角振动测量对于分析隔振系统的性能至关重要。本文提出了一种基于图像的、易于实现的线阵相机角运动测量方法，该方法不需要额外的光学系统来测量相机的角运动。通过室内振动试验，测量了隔振器的固有频率。对于图像振动测量，角振动通过摄像机的图像运动和角运动之间的关系表示为图像运动。基于推扫成像原理，利用图像分割和边缘检测等图像处理技术，提取线性物体前景图像边缘的图像运动。然后在时域和频域分析图像运动。该方法已成功地用于飞行试验中的角振动测量。文中还给出了振动传感器和位置定向系统的飞行试验结果，验证了该方法的有效性和准确性。（2021）美国光学学会

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  • 来源
    《Applied optics》 |2021年第4期|共10页
  • 作者

    Xue Zhi-Peng; Wang Chao; Li Ming; Wang Chunxue; Jia Hongguang; Yu Yue;

  • 作者单位

    Chang Guang Satellite Technol Co 1299 Mingxi Rd Changchun 130102 Peoples R China;

    Chang Guang Satellite Technol Co 1299 Mingxi Rd Changchun 130102 Peoples R China;

    Chang Guang Satellite Technol Co 1299 Mingxi Rd Changchun 130102 Peoples R China;

    Chinese Acad Sci Changchun Inst Opt Fine Mech &

    Phys 3888 Dong Nanhu Rd Changchun 130033 Peoples R China;

    Chang Guang Satellite Technol Co 1299 Mingxi Rd Changchun 130102 Peoples R China;

    Chang Guang Satellite Technol Co 1299 Mingxi Rd Changchun 130102 Peoples R China;

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