Laser & Optoelectronics Progress, Volume. 55, Issue 11, 110901(2018)
A Speckle Noise Reduction Method for Lensless Fourier Transform Digital Holography
Figures & Tables(9)
Fig. 5. Lensless Fourier transform digital holographic reconstructed images. (a) Coins; (b) dices
Fig. 6. Equivalent number of looks changes with the increase of the number of sub-reconstructed images. (a) Dice; (b) coin
Fig. 7. Reconstructed images using proposed method and SDM method. (a) Proposed method, dices; (b) proposed method, coins; (c) SDM method, dices; (d) SDM method, coins
Table 1. Processing time of two methodss
View tableTable 1. Processing time of two methodss
Aperture Proposed method SDM method Dice Coin Dice Coin 320 pixel×427 pixel 6.52 7.17 103.75 109.58 240 pixel×320 pixel 5.75 5.77 135.14 136.50 192 pixel×256 pixel 5.46 5.46 130.72 134.94
Table 2. Edge preservation index of reconstructed image improved by two methods
View tableTable 2. Edge preservation index of reconstructed image improved by two methods
Aperture Proposed method SDM method Dice Coin Dice Coin 320 pixel×427 pixel 0.3348 0.2869 0.1612 0.1771 240 pixel×320 pixel 0.2810 0.3080 0.1038 0.1195 192 pixel×256 pixel 0.2211 0.2435 0.0912 0.0741
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Mingda Liang, Li Chen, Weitao Lin, Yonghao Chen. A Speckle Noise Reduction Method for Lensless Fourier Transform Digital Holography[J]. Laser & Optoelectronics Progress, 2018, 55(11): 110901
Paper Information
Category: Holography
Received: Apr. 27, 2018
Accepted: Jun. 6, 2018
Published Online: Aug. 14, 2019
The Author Email: Mingda Liang (liangmingda088@163.com), Li Chen (ggchenli@gdut.edu.cn)
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