Chinese Optics Letters, 2016, 14 (6): 060901, Published Online: Aug. 3, 2018
Fringe contrast enhancement of digital off-axis hologram via sparse representation 
Download： 819次
Figures & Tables
Fig. 1. (a) Experimental setup for reflective off-axis digital holography, (b) highest fringe contrast hologram X t Y t
Fig. 2. Fringe contrast enhancement algorithm of digital off-axis hologram via sparse representation.
Fig. 3. Comparison of the recorded holograms and enhanced holograms of a different part on 1951 USAF resolution test target: (a1) recorded hologram, (a2) local zoom of (a1), (a3) 3D profile of (a1); (b1) enhanced hologram of (a1), (b2) local zoom of (b1), (b3) 3D profile of (b1); (c1) recorded hologram with higher contrast than (a1), (c2) local zoom of (c1), (c3) 3D profile of (c1); (d1) enhanced hologram of (c1), (d2) local zoom of (d1), (d3) 3D profile of (d1); (e) pixels value of lines indicated by yellow lines in (c2) and (d2).
Fig. 4. Comparison of the recorded holograms and enhanced holograms of a groove plate: (a1) recorded hologram, (a2) 3D profile of (a1); (b1) enhanced hologram of (a1), (b2) 3D profile of (b1); (c1) recorded hologram with higher contrast than (a1), (c2) 3D profile of (c1); (d1) enhanced hologram of (c1), (d2) 3D profile of (d1); (e) profiles of the same section in (c2) and (d2).
Yuan Hong, Tielin Shi, Yichun Zhang, Guanglan Liao. Fringe contrast enhancement of digital off-axis hologram via sparse representation[J]. Chinese Optics Letters, 2016, 14(6): 060901.
PDF全文
