Study on high-speed wire diameter measurement based on improved Zernike moment

Shunqiang Ye; Haibin Wu; Xinbing Chen

doi:10.1117/12.2674134

9 March 2023 Study on high-speed wire diameter measurement based on improved Zernike moment

Shunqiang Ye, Haibin Wu, Xinbing Chen

Proceedings Volume 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022); 1260016 (2023) https://doi.org/10.1117/12.2674134
Event: 2022 International Conference on Optoelectronic Materials and Devices, 2022, Chongqing, China

Abstract

In order to solve the problems of real-time measurement of online high-speed wire diameter data is difficult and the measurement accuracy is low, this paper proposes a sub-pixel detection algorithm for wire diameter based on machine vision, and builds a real-time measurement system. On the basis of image preprocessing, the Otsu-based automatic threshold canny operator is first used for coarse pixel-level edge positioning; then on the basis of the traditional Zernike moment, the step grayscale difference between the background and the target is used, combined with the Otsu algorithm and the iterative method to automatically determine the step grayscale threshold, and realize the Zernike moment subpixel edge extraction of the adaptive threshold. The least squares method is used to fit the extracted edge points and obtain the diameter of the wire. After experimental analysis and comparison, the accuracy of the data obtained by this method meets the requirements of on-site accuracy and is expected to be applied to high-speed wire production sites.

Citation Download Citation

Shunqiang Ye, Haibin Wu, and Xinbing Chen "Study on high-speed wire diameter measurement based on improved Zernike moment", Proc. SPIE 12600, International Conference on Optoelectronic Materials and Devices (ICOMD 2022), 1260016 (9 March 2023); https://doi.org/10.1117/12.2674134

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