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在近红外频段的单光子水平上进行块扫描单像素成像

Jie Liu, Zhao-Hua Yang, Zhi-Hao Zhao

|August 13, 2025

概括

一种新的块基扫描方法增强了单像素成像 (SPI) 用于弱光检测. 这种技术使光子使用量减少了25倍,并提高了图像质量,从而实现了高效的3D重建.

科学领域:

光学和光子学在光学和光子学.
计算成像技术的成像
低光感应低光感应

背景情况:

单像素成像 (SPI) 在弱光检测方面表现出色,但由于大量光子积累,其信号噪声比率 (SNR) 较低.
在积累过程中,光子堆积效应会扭曲信号,并降低传统SPI中的图像质量.
现有的SPI方法,如哈达马德模式,需要高动态范围的光子计数.

研究的目的:

开发一种高效,强大的成像方法,用于弱光检测.
克服光子积累和堆积效应在SPI中的局限性.
改善信号噪声比 (SNR) 并减少光子在单像素成像中的使用.

主要方法:

提出了一种新的基于块的扫描方法,将点扫描的稳定性与SPI效率相结合.
与基于哈达马德模式的SPI相比,该方法减少了对光子计数的动态范围要求.
进行实验验证,以评估性能指标.

主要成果:

与哈达马德模式相比,光子使用量减少了25倍.
对比度与噪声比率 (CNR) 提高了1.1倍.
高质量的成像只用每像素1.34个光子就能实现.

结论:

区块基础扫描方法显著提高了SPI中的信息采集速度和SNR.
这种方法可以有效地检测弱光和3D对象的重建.
该方法对需要高灵敏度和分辨率的先进映射应用具有前景.

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