Fig. 1. Schematic diagram of dual-view display.（a）HUD；（b）3D glasses stereoscopic display；（c）Eye-tracking naked-eye 3D display.

Fig. 2. Naked-eye 3D display based on eye tracking

Fig. 3. Schematic diagram of vergence-accommodation.（a）Natural state；（b）Near-eye display；（c）Naked eye 3D display.

Fig. 4. Schematic diagram of near-eye light field display system

Fig. 5. Near-eye display combining Maxwellian-view and light-field methods^［19］

Fig. 6. Near-eye display based on multilayer liquid crystal

Fig. 7. Holographic near-eye displays based on overlap-add stereograms

Fig. 8. Near-eye display based on composite light field

Fig. 9. Integral imaging 3D display by using a transmissive mirror device.（a）System structure diagram；（b）Elemental image array.

Fig. 10. Light field display based on a new lenticular lens array

Fig. 11. Volumetric display

Fig. 12. Tabletop integral imaging 3D display

Fig. 13. Virtual viewpoint synthesis technology based on single viewpoint

Fig. 14. Schematic diagram of neural radiance fields.（a）5D input；（b）Output.

Fig. 15. Algorithm for enhancing virtual view image quality

Fig. 16. Schematic diagram of Instant NeRF

Fig. 17. Schematic diagram of depth-image-based rendering

Fig. 18. Schematic diagram of model-based rendering

Fig. 19. Schematic diagram of sparse viewpoint-based rendering