Fig. 1. Schematic diagram of diffractive optical element dispersion

Fig. 2. Schematic diagram of diffraction spectrum imaging

Fig. 3. Imaging principle of traditional camera and light field camera

Fig. 4. Schematic diagram of a new hyperspectral diffraction computational imaging detection system

Fig. 5. System imaging recovery diagram

Fig. 6. (a) Original reference image , (b) Light field sampling simulation diagram

Fig. 7. Spectral decoupling recovery map of 410-550 nm

Fig. 8. Selected targets

Fig. 9. Comparison of spectral curves of different targets