Fig. 1. SD-CASSI system

Fig. 2. Data flow of the kth row measurement

Fig. 3. Comparison of two-dimensional random coding and multi-slot combination coding. (a) Two-dimensional random coding; (b) multi-slot combination coding

Fig. 4. Correspondence between the measured matrix and measured vector

Fig. 5. Coded sampling results and recovery results with different sampling rates. (a) Original image; (b) traditional sampling data; (c) coded sampling data; (d) 20% sampling recovery; (e) 50% sampling recovery; (f) 80% sampling recovery

Fig. 6. Comparison of spectral recovery results at different sampling rates

Fig. 7. Evaluation of recovery results for different sampling rates. (a) p_SNR for spatial information recovery; (b) S_CF for spectral information recovery

Fig. 8. Electronic multi-slot combined encoding hyperspectral imaging system based on liquid crystal light valve

Fig. 9. Imaging target and sampling results used in experiment. (a) Imaging target; (b) sampling results

Fig. 10. Recovery results of experiments with different sampling rates. (a) 20%; (b) 50%; (c) 80%

Fig. 11. Spectral recovery results at different positions. (a) Position 1 and position 2; (b) position 3 and position 4

Fig. 12. Recovery results under different sampling rates in outdoor experiments. (a) Data cube recovered at 80% sampling rate; (b) recovery result of spectral curve at position A under different sampling rates

Fig. 13. Calibration under different fields of view