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Clustering-based CLEAN algorithm in ghost imaging with sparse spatial frequencies
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DOI：10.1364/OE.440497.png)
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Abstract
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When insufficient samples in the spatial frequency domain could be effectively compensated by the modified CLEAN algorithm, a novel aperture-synthetic scheme of ghost imaging takes advantage of a superior speed of modulation and an enhancement on the spatial resolution. However, there still exist some imperfections in the modified CLEAN reconstructions, such as the fact that some omitted scatter noise still remains or the object contour may be incomplete. Therefore, we optimize the modified CLEAN algorithm by proposing a density clustering algorithm to overcome these drawbacks and improve the visual quality. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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