Hua Zhang, Liangcai Cao, Guofan Jin, Brady David. Progress on Lensless Digital Holography Imaging Based on Compressive Holographic Algorithm[J]. Laser & Optoelectronics Progress, 2020, 57(8): 080001
- Laser & Optoelectronics Progress
- Vol. 57, Issue 8, 080001 (2020)
Fig. 1. Mathematical model of compressed sensing
Fig. 2. Compressed digital holographic model
Fig. 3. Experimental results. (a) Multi-layer structure of 3D object; (b) point spread functions at different layers; (c) 3D reconstruction using traditional back-propagation algorithm; (d) 3D reconstruction using compressive digital holography
Fig. 4. Reconstruction of compressive digital holography without a filter layer
Fig. 5. Compressive digital holography. (a) Schematic diagram of filtering mechanism of compressive digital holography; (b) quality of reconstruction varies with the position of the filter layer
Fig. 6. Digital holography. (a) Recording; (b) reconstruction
Fig. 7. Gabor holographic 3D microscopic imaging system. (a) Schematic diagram of imaging system; (b) captured Gabor hologram
Fig. 8. 3D multi-layer object reconstruction results. (a) Back-propagation algorithm; (b) traditional compressive digital holographic algorithm; (c) local enlarged image of the reconstruction using block compressive digital holographic algorithm
Fig. 9. Particle-flowing 3D video imaging system
Fig. 10. Gabor holograms. (a) Oblique illumination; (b) vertical illumination; (c) 3D particle field reconstruction
Fig. 11. 3D particle field reconstruction results. (a) Back-propagation model; (b) single-angle compression digital holographic model; (c) double-angle compression digital hologram
Fig. 12. 3D reconstruction results. (a)(b) Microscopic 3D reconstruction results of two particles; (c) particle position varies with time in a 3D particle-flowing field
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Table 1. Computational reconstruction time of several typical compressed digital holograms
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