Grating-assisted spatial phase-shifting incoherent digital holography with compressive sensing for noise reduction

2018 ◽  
Author(s):  
Teruyoshi Nobukawa ◽  
Yutaro Katano ◽  
Tetsuhiko Muroi ◽  
Nobuhiro Kinoshita ◽  
Norihiko Ishii
Keyword(s):  
Compressive Sensing ◽  
Noise Reduction ◽  
Digital Holography ◽  
Phase Shifting ◽  
Spatial Phase

Determination of Phase Shift by Digital Holography

2019 ◽  
Vol 888 ◽  
pp. 43-46
Author(s):  
Yoshitaka Takahashi ◽  
Masatoshi Saito ◽  
Toru Nakajima ◽  
Masakazu Shingu
Keyword(s):  
Phase Shift ◽  
Noise Reduction ◽  
Digital Holography ◽  
High Accuracy ◽  
Measured Data ◽  
Phase Shifting ◽  
Surface Shape ◽  
Shape Measurement ◽  
Phase Shifting Interferometry

In phase shifting interferometry phase shift is applied by various ways, but applying it with high accuracy, especially by LD current modulation, is not easy. In order to determine the accurate phase shift a new method has been proposed that the value of LD current corresponding to π/2 phase shift can be determined by phase shifting digital holography. The measured data of standard in surface shape measurement were used for calibration, and the obtained value was confirmed to cause noise reduction and improvement of holographic reconstructed images in digital holography.

Multiwavelength Digital Holography with Spatial Phase Shifting on Moving Objects

2016 ◽  
Author(s):  
Annelie Schiller ◽  
Tobias Beckmann ◽  
Markus Fratz ◽  
Dominik Belzer ◽  
Alexander Bertz ◽  
...  
Keyword(s):  
Digital Holography ◽  
Moving Objects ◽  
Phase Shifting ◽  
Spatial Phase

Study of key technology of ghost imaging via compressive sensing for a phase object based on phase-shifting digital holography

2015 ◽  
Vol 12 (7) ◽  
pp. 075202 ◽  
Author(s):  
Zhang Leihong ◽  
Liang Dong ◽  
Li Bei ◽  
Pan Zilan ◽  
Zhang Dawei ◽  
...  
Keyword(s):  
Compressive Sensing ◽  
Digital Holography ◽  
Phase Shifting ◽  
Ghost Imaging ◽  
Phase Object ◽  
Key Technology ◽  
Object Based

The spatial phase-shifting measuring profilometry based on dual-frequency grating

2021 ◽  
Vol 143 ◽  
pp. 106638
Author(s):  
Haihua An ◽  
Yiping Cao ◽  
Haitao Wu ◽  
Hechen Zhang ◽  
Hongmei Li
Keyword(s):  
Phase Shifting ◽  
Dual Frequency ◽  
Spatial Phase

Parallel Phase-Shifting Digital Holography Capable of Simultaneously Capturing Visible and Invisible Three-Dimensional Information

2010 ◽  
Vol 6 (10) ◽  
pp. 472-478 ◽  
Author(s):  
Takashi Kakue ◽  
Kenichi Ito ◽  
Tatsuki Tahara ◽  
Yasuhiro Awatsuji ◽  
Kenzo Nishio ◽  
...  
Keyword(s):  
Digital Holography ◽  
Three Dimensional ◽  
Phase Shifting

Successive encryption and transmission with phase-shifting digital holography

2006 ◽  
Author(s):  
Sang Keun Gil ◽  
Seok Hee Jeon ◽  
Nam Kim ◽  
Jong Rae Jeong
Keyword(s):  
Digital Holography ◽  
Phase Shifting
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