High-quality low sampling computational ghost image based on Coiflet-wavelet order in atmospheric turbulence

IF 1.5 4区物理与天体物理 Q3 OPTICS The European Physical Journal D Pub Date : 2025-04-23 DOI:10.1140/epjd/s10053-025-00991-2

Yangjun Li, Leihong Zhang, Dawei Zhang

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Abstract

As light passes through atmospheric turbulence, variations in the ambient refractive index cause fluctuations and drift in light intensity, resulting in severe image distortion that significantly limits its practical applications in imaging. Ghost imaging, which leverages the second-order coherence of the optical field, offers several advantages, including high noise immunity, low light source requirements, and single-pixel imaging, making it highly effective for imaging under turbulent conditions. In this paper, we propose a computational ghost imaging method for atmospheric turbulence under low sampling conditions. The method employs Coiflet-wavelet decomposition to extract low-frequency wavelet coefficients from the Hadamard pattern, arranging them in ascending order to prioritize useful information and enhance reconstruction quality. Comparative with other optimized methods demonstrate that our approach achieves superior imaging performance, highlighting its potential for applications in atmospheric turbulence imaging.

Graphical abstracts

The CGI of atmospheric turbulence based on Coiflet-wavelet order. HWP: half-wave plate, LP: linear polarizer, L1-L11: lens, SLM1-SLM5: spatial light modulators, CCD: camera.

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基于coiflet -小波阶的大气湍流高质量低采样计算鬼像

当光穿过大气湍流时，环境折射率的变化会引起光强的波动和漂移，从而导致严重的图像畸变，极大地限制了其在成像中的实际应用。鬼影成像利用光场的二阶相干性，具有几个优点，包括高抗噪性、低光源要求和单像素成像，使其在湍流条件下成像非常有效。本文提出了一种低采样条件下的大气湍流计算鬼影成像方法。该方法采用coiflet -小波分解从Hadamard模式中提取低频小波系数，并将其按升序排列，以优先考虑有用信息，提高重建质量。与其他优化方法的对比表明，该方法具有优越的成像性能，突出了其在大气湍流成像中的应用潜力。基于coiflet -小波阶的大气湍流CGI。HWP：半波片，LP：线偏光镜，L1-L11：镜头，SLM1-SLM5：空间光调制器，CCD：相机。

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.