单像素复光场成像研究进展

Recent advances in single-pixel complex optical field imaging

单像素成像通过时间变化的结构编码将高维度信息编码到一维探测序列中,仅通过一个单像素探测器即可实现高维度的成像。得益于单像素成像对探测器极低的分辨率要求,其在特殊波段成像、极弱光成像、激光雷达探测等领域都有着重要的研究价值。复光场成像相较于传统强度成像在获得光场强度变化的同时还可以获得光场的相位信息,在无标记显微成像、表面测量、晶体测量等领域发挥着巨大的作用。将单像素成像手段引入复光场成像领域,将有效降低复光场成像在弱光显微成像与测量等场景下的探测成本。从单像素成像以及复光场探测的基本原理出发,详细介绍了单像素复光场成像的研究现状及最新进展,对现有的问题做了具体分析,并对今后可能的发展方向做了展望。

Single-pixel imaging can achieve high-dimensional imaging with only a single-pixel detector,in which the high-dimensional information is encoded into a one-dimensional detection sequence through time-varying structured patterns.Due to its extremely low requirement for detector’s resolution,singlepixel imaging has great research value in special waveband imaging,extremely low light imaging,and lidar detection.Compared with traditional intensity imaging,complex optical field imaging can not only obtain the change of light field intensity,but also obtain the phase information,therefore,it performs a great value in label-free microscopy imaging,surface measurement,crystal analysis and so on.Combining the advantages of both single-pixel imaging and complex optical imaging,single-pixel complex optical imaging has drawn widely attentions and can be applied in low-light microscopy imaging and measurement.Starting from the basic principles of single-pixel imaging and complex light field detection,the research status and some recent advances of single-pixel optical field imaging are reviewed,and the challenging problems as well as future research directions are also discussed.