光源相干性对彩色单像素成像质量的影响  

Influence of Light Source Coherence on the Quality of Color Single Pixel Imaging

作　　者：李晶[1] 高超 王晓茜[1] 姚治海[1] LI Jing;GAO Chao;WANG Xiaoqian;YAO Zhihai(School of Physics,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学物理学院,长春130022

出　　处：《长春理工大学学报(自然科学版)》2025年第1期56-66,共11页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省自然科学基金(YDZJ202101ZYTS030)。

摘　　要：不同光源的相干性差异会影响其传递性质。相干性直接影响照明图样的分布形式,从而影响重构质量。在数值模拟过程中,相干光源成像基于惠更斯-菲涅耳原理,波面上各点次波相干叠加出现明暗相间的圆环,这是高相干性导致的干涉效应。非相干光源因波长间的相干性较低,成像可能会出现弥散的现象。弥散对图像质量影响较小且容易被修复,适当算法和信号处理可以改善图像的细节和清晰度。此外,截止频率的变化是影响成像质量的关键因素,当截止频率增大时,成像质量相应提高。这些结果为优化彩色单像素成像提供了理论指导和实验依据。The influence of the coherence of light source on the quality of color single pixel imaging was discussed.The coherence difference of different light sources will affect its transmission properties.The coherence directly affects the distri-bution form of the illumination pattern,which affects the quality of reconstruction.In the process of numerical simulation,the color ring phenomenon may appear when the coherent light source is used for imaging,which is due to the high coherence of the coherent light source.Interference effect caused by coherent light source.When using an incoherent light source,imaging is possible due to the low coherence between different wavelengths inside the light source.The phenomenon of dispersion may occur.In the study of incoherent light color single pixel imaging system,we find that different normal-ization methods have an effect on image quality.In this paper,the RGB three-channel component is normalized respectively,and then the color superposition is carried out,and the reconstructed image effect is better than other normalization methods.In addition,the change of cutoff frequency is the key factor affecting the image quality.When the cutoff frequency increases,the image quality will be improved accordingly.These results provide theoretical guidance and experimental basis for optimizing color single pixel imaging.

关 键 词：单像素成像系统 彩色成像 光源相干性 色差 

分 类 号：O436[机械工程—光学工程]