Fig. 1. Hologram recording optical path map

Fig. 2. Zero filling reconstruction of color hologram. (a) Green light reconstruction image; (b) blue light reconstruction image; (c) red light reconstruction image (d) synthetic color holographic reconstruction image

Fig. 3. Schematic diagram of CHR-Net structure

Fig. 4. Deep supervision mechanism

Fig. 5. Example of dataset production

Fig. 6. Network error curve

Fig. 7. Output results from three branches under deep supervision; (a) Original image; (b) out2; (c) out1; (d) out

Fig. 8. Comparison of reconstruction effects of different algorithms. (a) Original images; (b) S-FFT reconstruction images; (c) U-Net reconstruction images; (d) CHR-Net reconstruction images

Fig. 9. Verification of Fresnel hologram reconstruction from actual shooting. (a) Original image; (b) S-FFT reconstruction image; (c) U-Net reconstruction image; (d) CHR-Net reconstruction image