Fig. 1. Principle of computation for phase-type holograms

Fig. 2. Principle of G-S algorithm

Fig. 3. Error-reduction algorithm

Fig. 4. Principle of iterative Fourier transform algorithm with mix constraints

Fig. 5. Optimization of holograms for 3D objects using alternative projection iteration algorithms

Fig. 6. Inverse problem for nonlinear minimization

Fig. 7. Principle of optimized phase mask algorithm

Fig. 8. Principle of complex modulation in the unite circle

Fig. 9. Double-phase encoding on the spatial light modulator

Fig. 10. Encoding flow chart of the single-pixel double-phase hologram^［52］

Fig. 11. Binary hologram encoding using error diffusion^［57］

Fig. 12. Bidirectional error diffusion method^［58］