Sub-Pixel Scanning High-Resolution Panoramic 3D Imaging Based on a SPAD Array

3D imaging based on single-photon avalanche diode (SPAD) arrays is of interest in many applications. Limited by the small array size and low fill-factor available SPAD array, it difficult for array-based lidars to achieve high-resolution high-quality images currently. Here, we propose a sub-pixel continuously scanning panoramic method. This method uses increase spatial resolution employs accumulating photon counts at different pixel same target point improve image quality. We have established an experimental system 32 × diffraction optical element (DOE) with beamlet. By 3 m away counts, demonstrated that has been improved from mm 0.33 quality evidently.