Adaptive Fourier single pixel imaging based on pre-projection

An adaptive Fourier single-pixel imaging scheme based on pre-projection (ppFSI) is presented in this paper. This scheme preliminarily localizes the imaging region by pre-projecting a nine-grid pattern to the scene, then the target region is obtained by using a down-sampling method for the preliminarily localized region, and finally a high-quality reconstruction of the target region is obtained by secondary sampling of the target region. Compared with the existing single-pixel imaging methods, ppFSI can achieve high-quality reconstruction of the target region while significantly reducing the projected patterns because it only projects illumination patterns on the target region. The experiments strongly demonstrate the effectiveness of this scheme.