Snapshot GISC Video Level 3D Imaging Based on Phase Modulation

For traditional point-to-point imaging technology, amplitude modulation intensity correlation imaging technology, and computational imaging technology based on channel coding, there are defects of insufficient channel utilization. To overcome this limitation, this paper proposes a scheme to reconstruct 3D spectral imaging at a video-level imaging rate using a ghost imaging via sparsity constraints (GISC) snapshot spectroscopic camera. The modulation/demodulation process of snapshot video spectral imaging is elaborated based on the imaging principle of a snapshot GISC spectral camera and the design method of DOE in the GISC spectral camera. Experimental results demonstrate that the proposed method successfully captures hyper-spectral reconstructed images of 15 spectral channel wavelengths, including 461–698 nm, while recording three small fish of different colors in motion at a rate of 30 frames/second. The method and result presented will have great application prospects in satellite remote sensing data analysis, air traffic control, animal migration monitoring research, and escaping vehicle tracking in traffic accidents.