A Full-Aperture Image Synthesis Method for the Rotating Rectangular Aperture System Using Fourier Spectrum Restoration

The novel rotating rectangular aperture (RRA) system provides a good solution for space-based, large-aperture, high-resolution imaging tasks. Its imaging quality depends largely on the image synthesis algorithm, and the mainstream multi-frame deblurring approach is sophisticated and time-consuming....

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Bibliographic Details
Published inPhotonics Vol. 8; no. 11; p. 522
Main Authors Lv, Guomian, Xu, Hao, Feng, Huajun, Xu, Zhihai, Zhou, Hao, Li, Qi, Chen, Yueting
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2021
Subjects
Algorithms
Aperture
Aperture imaging
Computer simulation
Fourier spectrum restoration
Image quality
Image resolution
image synthesis
Mathematical models
Noise
numerical simulation
Optics
Point spread functions
Remote sensing
Restoration
rotating rectangular aperture system
Rotation
Simulation
Synthesis
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Summary:The novel rotating rectangular aperture (RRA) system provides a good solution for space-based, large-aperture, high-resolution imaging tasks. Its imaging quality depends largely on the image synthesis algorithm, and the mainstream multi-frame deblurring approach is sophisticated and time-consuming. In this paper, we propose a novel full-aperture image synthesis algorithm for the RRA system, based on Fourier spectrum restoration. First, a numerical simulation model is established to analyze the RRA system’s characteristics and obtain the point spread functions (PSFs) rapidly. Then, each image is used iteratively to calculate the increment size and update the final restored Fourier spectrum. Both the simulation’s results and the practical experiment’s results show that our algorithm performs well in terms of objective evaluation and time consumption.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics8110522