Enhanced Fourier single-pixel imaging via positive–negative dithering

• DOI: 10.1364/ol.551685
• Publication Date: 2025-02-20T13:00:09Z
• Authors: Haiyu Fan; Shijian Li; Chongwu Shao; Yinran Shen; Xu-Ri Yao; Qing Zhao
• Keywords: Dither; Point spread function

Fourier single-pixel imaging (FSI) takes full advantage of the high modulation speed digital micromirror devices by applying upsampling and spatial dithering to binarize grayscale patterns, thereby achieving efficient imaging. However, process patterns sacrifices resolution. Here, we propose a binarization method for FSI that enhances reconstructed image quality without need upsampling. The key is with serpentine path directly both positive negative components before binarization. By quantizing these into {-1, 0, +1} values subsequently mapping them binary our reduces quantization errors in coefficient acquisition. Both simulation experimental results demonstrate significantly improves quality. It can also be applied other types use positive-negative patterns.