A Super Resolution Phase Retrieval Method for Sparse Signals with Arbitrary Scattering Function

2021 ◽  
Author(s):  
Pinjun Zheng ◽  
Ning Fu ◽  
Liyan Qiao
Keyword(s):  
Phase Retrieval ◽  
Super Resolution ◽  
Sparse Signals ◽  
Scattering Function ◽  
Retrieval Method ◽  
Arbitrary Scattering

scholarly journals Super Resolution Phase Retrieval for Sparse Signals

2019 ◽  
Vol 67 (18) ◽  
pp. 4839-4854 ◽  
Author(s):  
Gilles Baechler ◽  
Miranda Krekovic ◽  
Juri Ranieri ◽  
Amina Chebira ◽  
Yue M. Lu ◽  
...  
Keyword(s):  
Phase Retrieval ◽  
Super Resolution ◽  
Sparse Signals

Super-resolution, multi-plane phase retrieval via amplitude flow variants

2021 ◽  
Vol 146 ◽  
pp. 106715
Author(s):  
Joel Yeo ◽  
Hon Luen Seck ◽  
Ying Zhang
Keyword(s):  
Phase Retrieval ◽  
Super Resolution

scholarly journals Measurement of Small-Slope Free-Form Optical Surfaces with the Modified Phase Retrieval

Micromachines ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 82
Author(s):  
Xinxue Ma ◽  
Jianli Wang ◽  
Bin Wang ◽  
Xinyue Liu
Keyword(s):  
Wave Front ◽  
Phase Retrieval ◽  
Computation Time ◽  
Experimental Arrangement ◽  
Free Form ◽  
Retrieval Algorithm ◽  
Retrieval Method ◽  
Optical Surfaces ◽  
Image Capturing ◽  
Phase Retrieval Algorithm

In this paper, we demonstrate the use of the modified phase retrieval as a method for application in the measurement of small-slope free-form optical surfaces. This technique is a solution for the measurement of small-slope free-form optical surfaces, based on the modified phase retrieval algorithm, whose essence is that only two defocused images are needed to estimate the wave front with an accuracy similar to that of the traditional phase retrieval but with less image capturing and computation time. An experimental arrangement used to measure the small-slope free-form optical surfaces using the modified phase retrieval is described. The results of these experiments demonstrate that the modified phase retrieval method can achieve measurements comparable to those of the standard interferometer.

scholarly journals Two-Step Phase Retrieval Algorithm Using Single-Intensity Measurement

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Cheng Zhang ◽  
Meiqin Wang ◽  
Qianwen Chen ◽  
Dong Wang ◽  
Sui Wei
Keyword(s):  
Phase Retrieval ◽  
Fourier Spectrum ◽  
Retrieval Algorithm ◽  
Improved Method ◽  
Retrieval Method ◽  
Intensity Measurements ◽  
Successful Recovery ◽  
Reconstruction Quality ◽  
Low Probability ◽  
Phase Retrieval Algorithm

Aiming at the problem that the single-intensity phase retrieval method has poor reconstruction quality and low probability of successful recovery, an improved method is proposed in this paper. Our method divides the phase retrieval into two steps: firstly, the GS algorithm is used to recover the amplitude in the spatial domain from the single-spread Fourier spectrum, and then the classical GS algorithm using two intensity measurements (one is recorded and the other is estimated from the first step) measurements is used to recover the phase. Finally, the effectiveness of the proposed method is verified by numerical experiments.

Sign in / Sign up

Export Citation Format

Share Document