Laser & Optoelectronics Progress, Volume. 59, Issue 16, 1609002(2022)
Speckle Noise Suppression of Digital Holography Measuring System
Figures & Tables(8)
Fig. 2. Experimental setup of transmissive off-axis digital holographic measurement system
Fig. 3. Experimental results of speckle noise suppression. (a) MLA hologram; (b) spatial spectrogram; (c) hologram without background noise; (d) wrapping phase; (e) wrapping phase after proposed method; (f) MLA reconstruction phase
Fig. 4. Experimental results of package phases processed by different methods. (a)‒(d) Wrapped phases after without filtering, median filtering, NLM filtering, and proposed method; (e)‒(h) wrapped phases at (a)‒(d) marking positions
Table 1. Evaluation of noise suppression ability of different filtering methods
View tableTable 1. Evaluation of noise suppression ability of different filtering methods
Method Evaluation index SSI SMPI SSIM Median filtering 0.7810 0.8932 0.9026 NLM filtering 0.7277 0.8381 0.9372 Proposed method 0.6867 0.7983 0.9864
Table 2. Comparative analysis of resid
View tableTable 2. Comparative analysis of resid
Residual PV /μm RMS Before 0.3411 0.0667 After 0.2444 0.0532
Tools
Get Citation
Copy Citation Text
Rui Niu, Ailing Tian, Dasen Wang, Bingcai Liu, Hongjun Wang, Xiaotong Qian, Weiguo Liu. Speckle Noise Suppression of Digital Holography Measuring System[J]. Laser & Optoelectronics Progress, 2022, 59(16): 1609002
Paper Information
Category: Holography
Received: May. 20, 2021
Accepted: Jun. 28, 2021
Published Online: Jul. 22, 2022
The Author Email: Ailing Tian (ailintian@xatu.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20