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One of the challenges that has been faced by holographic 3D display is the lack of 3D contents. To deal with the shortage of 3D contents, a 2D-to-3D algorithm is presented for the holographic 3D display. The 2D images are firstly classified into 3 categories by the features. The depth maps for different categories are obtained by different calculation models accordingly. The computer-generated holograms (CGHs) are calculated by the layer-based angular-spectrum approach. These CGHs can be reconstructed with obvious 3D depth cues in simulations and experiments.
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Zehao He, Kexuan Liu, Xiaomeng Sui, Liangcai Cao, "Angular-spectrum algorithm for holographic 3D display based on 2D-to-3D approach," Proc. SPIE 12025, Ultra-High-Definition Imaging Systems V, 1202509 (3 March 2022); https://doi.org/10.1117/12.2609369