Differential Forms of Third-order Correlation Imaging Based on Fluctuation Characteristics

doi:10.3969/j.issn.1007-5461.2026.02.010

Abstract

Abstract: Correlation imaging, also known as ghost imaging, is a novel imaging method with strong anti-interference ability and has been widely studied in recent years. Existing studies have found that, theoretically, as the order of correlated imaging increases, more object information can be obtained, and the image exhibits higher resolution and signal-to-noise ratio. Consequently, high-order correlated imaging has gradually become a research hotspot. However, in practical experiments, high-order correlated imaging often suffers from poor image quality and requires a large number of measurements. Given that differential imaging can be used in second-order correlation imaging to improve the image quality, this paper mainly starts from the differential form of third-order correlation imaging to improve the image quality of third-order correlation imaging. Firstly, the differential forms based on the fluctuation of light intensity are proposed for the third-order correlation imaging scheme, and theoretical analysis, numerical simulations, and comparative studies of the structural similarity index are conducted. Subsequently, the correctness and feasibility of the differential form are experimentally verified. The results show that the proposed differential form of third-order correlation imaging can improve imaging quality while reducing the number of measurements.

Key words: correlation imaging, image quality, differential ghost imaging, structural similarity index

CLC Number:

O431.2

HU Yajing, ZHANG Xiaoyu, GAO Chao, WANG Xiaoqian . Differential Forms of Third-order Correlation Imaging Based on Fluctuation Characteristics[J]. Chinese Journal of Quantum Electronics, 2026, 43(2): 275-284.

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