Fig. 1. Flow chart of the proposed method for generation of multi-plane hologram

Fig. 2. Relationship between weight factor and speckle contrast.（a）Target image；（b）Relationship between C and SCR；（c）Relationship between C and SCR at the single random phase.

Fig. 3. Relationship between weight factors and structural similarity.（a）Target image；（b）Relationship between C and SSIM in a single plane case.

Fig. 4. Four plane reconstruction results of simple letter images.（a）Target images；（b）Reconstructions of the method proposed in Reference［15］；（c）Reconstructions of the proposed method.

Fig. 5. Cross-talk generated by hybrid phase in non-target plane.（a）Reconstruction results in the target plane；（b）Reconstruction results in the non-target plane.

Fig. 6. Simple letter reconstruction results extended to nine planes.（a）Target images in different planes，where z=18 cm，and the number of pixels is 4 000×4 000；（b）Reconstruction results of the proposed method.

Fig. 7. Two-plane reconstruction results of complex images.（a），（e），（g）Reconstruction results of the method in Reference［15］employing the first group random phases（with different target images）；（b），（f），（h）Reconstruction results of the proposed method employing the first group hybrid phases（with different target images）；（c）Reconstruction results of the method in Reference［15］employing the second group random phases；（d）Reconstruction results of the proposed method employing the second group hybrid phases.

Fig. 8. Four plane reconstruction results of complex images.（a）Intensity image，depth image and hologram；（b）Layered images；（c）Reconstruction results.

Fig. 9. Reconstruction results with 20 planes.（a）Sliced three-dimensional object；（b）20 planes of target images；（c）Reconstructed images.

Fig. 10. Simulated reconstruction results of holograms with different pixel numbers

Fig. 11. Simulated reconstruction results of holograms with different pixel pitches

Fig. 12. Diagram of experimental setup. LP：Linear polarizer. SF：Spatial filter；L1，L2，L3：Lens（focal length of 300 mm）；LCoS：Liquid crystal on silicon；HFP：High pass filter.

Fig. 13. Multi-plane optical reconstruction of simple images.（a）Reconstructions of the method proposed in Reference［15］；（b）Reconstruction results of the proposed method.

Fig. 14. Multi-plane optical reconstruction results of complex images