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Published January 10, 2020 | public
Journal Article

Accurate angle estimation based on moment for multirotation computation imaging

Abstract

In a multirotation computation imaging system, the fidelity of the reconstructed result is limited by the accuracy of the estimated rotation angles. Here, an accurate angle detection method using image moment is proposed to estimate angles of diffraction images. The second moment of a digital image is adopted as the rotational inertia in order to estimate angles of diffraction images. Compared with previous versions based on Radon/Hough transform, it has higher accuracy and is simultaneously time-saving, which is verified in both simulation and experiment. The angle error of moment method is narrowed down within 0.1°, or even less, and it also can perform well in sample diversity or when slightly out of focus.

Additional Information

© 2020 Optical Society of America. Received 1 October 2019; revised 27 November 2019; accepted 2 December 2019; posted 3 December 2019 (Doc. ID 379231); published 9 January 2020. The authors are indebted to two reviewers for helpful comments and suggestions. Funding: National Natural Science Foundation of China (61575055, 61575053, 11874132, 61975044). The authors declare no conflicts of interest.

Additional details

Created:
August 19, 2023
Modified:
October 19, 2023