Two-dimensional Phase Unwrapping for Digital Holography

2012 ◽  
Author(s):  
Neal K. Bambha ◽  
Justin R. Bickford ◽  
Jr Klett ◽  
Karl K.
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Two Dimensional

scholarly journals Tile-Based Two-Dimensional Phase Unwrapping for Digital Holography Using a Modular Framework

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0143186 ◽  
Author(s):  
Georgios C. Antonopoulos ◽  
Benjamin Steltner ◽  
Alexander Heisterkamp ◽  
Tammo Ripken ◽  
Heiko Meyer
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping ◽  
Two Dimensional ◽  
Modular Framework

scholarly journals Combined Reduced Phase Dual-Directional Illumination Digital Holography and Speckle Displacements for Shape Measurement

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Davood Khodadad
Keyword(s):  
Phase Difference ◽  
Digital Holography ◽  
Relative Phase ◽  
Groove Depth ◽  
Phase Unwrapping ◽  
Shape Measurement ◽  
Phase Ambiguity ◽  
Holographic Method ◽  
Height Range ◽  
Phase Differences

We present a digital holographic method to increase height range measurement with a reduced phase ambiguity using a dual-directional illumination. Small changes in the angle of incident illumination introduce phase differences between the recorded complex fields. We decrease relative phase difference between the recorded complex fields 279 and 139 times by changing the angle of incident 0.5° and 1°, respectively. A two cent Euro coin edge groove is used to measure the shape. The groove depth is measured as ≈300  μm. Further, numerical refocusing and analysis of speckle displacements in two different planes are used to measure the depth without a use of phase unwrapping process.

Investigation on Phase Unwrapping Algorithms in Digital Holography

2009 ◽  
Vol 29 (12) ◽  
pp. 3323-3327 ◽  
Author(s):  
张亦卓 Zhang Yizhuo ◽  
王大勇 Wang Dayong ◽  
赵洁 Zhao Jie ◽  
万玉红 Wan Yuhong ◽  
江竹青 Jiang Zhuqing ◽  
...  
Keyword(s):  
Digital Holography ◽  
Phase Unwrapping

scholarly journals Isotropic inverse-problem approach for two-dimensional phase unwrapping

2015 ◽  
Vol 32 (6) ◽  
pp. 1092 ◽  
Author(s):  
Ulugbek S. Kamilov ◽  
Ioannis N. Papadopoulos ◽  
Morteza H. Shoreh ◽  
Demetri Psaltis ◽  
Michael Unser
Keyword(s):  
Inverse Problem ◽  
Phase Unwrapping ◽  
Two Dimensional

Continuous-wave off-axis and in-line terahertz digital holography with phase unwrapping and phase autofocusing

2018 ◽  
Vol 426 ◽  
pp. 612-622 ◽  
Author(s):  
Haochong Huang ◽  
Dayong Wang ◽  
Lu Rong ◽  
Spozmai Panezai ◽  
Donglei Zhang ◽  
...  
Keyword(s):  
Digital Holography ◽  
Continuous Wave ◽  
Phase Unwrapping
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