Ipus Erick, Lenz Armin J M, Duran Vicente, Martínez-León Lluís, Lancis Jesús, Tajahuerce Enrique
Opt Lett. 2025 Mar 15;50(6):2105-2108. doi: 10.1364/OL.550906.
Block-based single-pixel imaging (SPI) systems use multiple detectors of a focal plane array to create highly parallel extensions of a single-pixel camera. This Letter presents what we believe to be a new approach for parallel single-pixel imaging that leverages the Talbot effect to scan an object with a short sequence of periodic light patterns encoded on a digital micromirror device (DMD). The unit cell of each periodic pattern corresponds to a Walsh-Hadamard (WH) matrix of low dimension. To separately collect the light from each unit cell, we implement an array of bucket detectors using multiple pixels of a conventional camera. The object image is then reconstructed by applying parallel single-pixel imaging algorithms. Our system improves spatial resolution and the frame rate while eliminating the need for optical elements between the DMD and the object. Simulations and experiments with two optical setups are presented and analyzed.
基于块的单像素成像（SPI）系统使用焦平面阵列的多个探测器来创建单像素相机的高度并行扩展。本文介绍了一种我们认为是并行单像素成像的新方法，该方法利用塔尔博特效应，通过在数字微镜器件（DMD）上编码的短周期光图案序列来扫描物体。每个周期图案的单元对应于低维的沃尔什 - 哈达玛（WH）矩阵。为了分别收集来自每个单元的光，我们使用传统相机的多个像素实现了一个桶探测器阵列。然后通过应用并行单像素成像算法重建物体图像。我们的系统提高了空间分辨率和帧率，同时无需在DMD和物体之间使用光学元件。文中给出并分析了两种光学设置的仿真和实验结果。
