All-day astronomical measurement system daytime star point extraction method

Wanxiang Gou; Chonghui Li; Zhixing Chen; Shuai Tong; Yong Zheng; Yuan Yang

doi:10.1117/12.3015278

30 April 2024 All-day astronomical measurement system daytime star point extraction method

Wanxiang Gou, Chonghui Li, Zhixing Chen, Shuai Tong, Yong Zheng, Yuan Yang

Proceedings Volume 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition; 131560I (2024) https://doi.org/10.1117/12.3015278
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

Under daylight conditions, infrared star maps taken by all-day astronomical measurement systems are characterized by high background noise and low signal-to-noise (SNR) ratios. Notably, the accuracy of infrared star point centroid extraction directly affects astronomical measurement system indicators. Traditional infrared star map processing methods focus on SNR enhancement and star point detection but do not fully consider star point irregularities. Notably, SNR ratio enhancements easily alter star point energy distributions, seriously limiting the accuracy of centroid extraction. This study provides a novel method for meeting the high-precision requirements of centroid star point extraction from all-day astronomical measurement systems. First, we extract suspected star point boundaries using the background prediction method. Then, we expand the suspected boundaries using an expansion algorithm for improved accuracy. Finally, we superimpose the multi-frame star map extracted by the expanded boundaries to avoid the SNR increase inherent in traditional superimposed infrared star maps. The superimposition also solves the problem of irregular single-frame star point imaging. Experiments show that the extraction accuracy of our method is 69.2, 73.9, and 33.3% higher than contemporary adaptive threshold segmentation, background prediction, and multi-frame superposition methods, respectively. There are also clear improvements in the success rate of star point extraction.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wanxiang Gou, Chonghui Li, Zhixing Chen, Shuai Tong, Yong Zheng, and Yuan Yang "All-day astronomical measurement system daytime star point extraction method", Proc. SPIE 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition, 131560I (30 April 2024); https://doi.org/10.1117/12.3015278

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Stars

Signal to noise ratio

Infrared radiation

Astronomy

Superposition

Infrared imaging

Tunable filters

Show All Keywords

Keywords/Phrases

Search In:

Publication Years