Fig. 5: Performance evaluation of DDPM.
From: End-to-end learning of 3D phase-only holograms for holographic display
a Comparison of simulated reconstruction using DDPM, AA-DPM, and BL-DPM for midpoint hologram. For AA-DPM and BL-DPM, two filter strengths are applied: the weaker one results in similar sharpness to DDPM; the stronger one results in an artifact-free image. b Comparison of simulated reconstruction using DDPM, DDPM (without the pre-filtering CNN), and AA-DPM for target holograms with 6, 12, and 24 mm offset to midpoint hologram. The AA-DPM filter strengths used for the boat and the couch scene are (σ = 1.0, w = 5) and (σ = 0.8, w = 3) respectively. They are the minimal strengths that result in artifact-free images for the midpoint hologram. c Comparison of pre-encoding target hologram phase and its double-phase encoded phase-only hologram predicted by CNNs trained with and without the regularization loss. The hologram plane is offset by 6 mm
