We present a compact, diffuser assisted, single-pixel computational camera. A rotating ground glass diffuser is adopted, in preference to a commonly used digital micro-mirror device (DMD), to encode a two-dimensional (2D) image into single-pixel signals. We retrieve images with an 8.8% sampling ratio after the calibration of the pseudo-random pattern of the diffuser under light-emitting diode (LED) illumination. Furthermore, we demonstrate hyperspectral imaging with line array detection by adding a diffraction grating. As the random and fixed patterns of a rotating diffuser placed in the image plane can serve as 2D modulation patterns in single-pixel imaging, we do not need further calibration for spectral imaging case since we use a parallel recovery strategy for images at all wavelengths. The implementation results in a cost-effective single-pixel camera for high-dimensional imaging, with potential for imaging in non-visible wavebands.

中文翻译：

---

单像素漫射相机

我们提出了一个紧凑的、漫射器辅助的、单像素计算相机。采用旋转磨砂玻璃漫射器，优先于常用的数字微镜器件 (DMD)，将二维 (2D) 图像编码为单像素信号。在发光二极管 (LED) 照明下校准漫射器的伪随机图案后，我们以 8.8% 的采样率检索图像。此外，我们通过添加衍射光栅展示了具有线阵列检测的高光谱成像。由于放置在图像平面中的旋转漫射器的随机和固定模式可以作为单像素成像中的 2D 调制模式，我们不需要对光谱成像情况进行进一步校准，因为我们对所有波长的图像使用并行恢复策略。