Centroid and grayscale reconstruction algorithm for infrared point targets

Jianhua Li; Feng Xue; Han Zhang; Lu Gao; Jiaqi Liu

doi:10.1117/12.2651982

23 January 2023 Centroid and grayscale reconstruction algorithm for infrared point targets

Jianhua Li, Feng Xue, Han Zhang, Lu Gao, Jiaqi Liu

Proceedings Volume 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology; 1255727 (2023) https://doi.org/10.1117/12.2651982
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

Improving the centroid and grayscale extraction accuracy of point targets is of great significance to the long distance detection system. There is a drop in centroid accuracy due to pixel sampling. For point targets, due to the small number of target pixels, the positioning accuracy is generally sub-pixel, and the use of optical dispersion to increase the number of target point pixels will reduce the signal-to-noise ratio of the point target, thereby reducing the detection distance of the system. In addition, there is a gap between the pixels of the infrared detector, and the grayscale response of the detector cannot reflect the real radiation intensity of the target. This paper simulates the point spread function based on the Gaussian function .The four parameters(the center coordinate, the width and the peak value) of the Gaussian function are estimated by a proposed optimization algorithm based on the obtained grayscale information of the point target. The results show that the grayscale extraction error is reduced from 35% of the grayscale summation algorithm to less than 10%, and the centroid error is also improved compared with the traditional centroid calculation algorithm.

Citation Download Citation

Jianhua Li, Feng Xue, Han Zhang, Lu Gao, and Jiaqi Liu "Centroid and grayscale reconstruction algorithm for infrared point targets", Proc. SPIE 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology, 1255727 (23 January 2023); https://doi.org/10.1117/12.2651982

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

Target detection

Sensors

Reconstruction algorithms

Infrared radiation

Infrared detectors

Signal detection

Point spread functions

Keywords/Phrases

Search In:

Publication Years