LIAN Qiu-sheng, WEI Tian-jiao, CHEN Shu-zhen, et al. A Phase Retrieval Algorithm Based on Total Variation Regularization[J]. Acta Electronica Sinica, 2017, 45(1): 54-60.
DOI:
LIAN Qiu-sheng, WEI Tian-jiao, CHEN Shu-zhen, et al. A Phase Retrieval Algorithm Based on Total Variation Regularization[J]. Acta Electronica Sinica, 2017, 45(1): 54-60. DOI: 10.3969/j.issn.0372-2112.2017.01.008.
A Phase Retrieval Algorithm Based on Total Variation Regularization
recovery of a signal only from the magnitude of its Fourier transform
or of any other linear transform.Due to the loss of phase information
this problem is ill-posed.Therefore
the prior knowledge is required to enable its accurate reconstruction.In this work
based on the framework of nonlinear compressive sensing
a novel phase retrieval algorithm which exploits the sparsity of the natural images under the image gradient operator is proposed.The algorithm incorporates the total variation regularization into the phase retrieval problem
which based on support constraints and amplitude constraints.Moreover
alternating direction method of multipliers (ADMM) is utilized for solving the corresponding non-convex optimization problem.Experimental results indicate that the performance of the proposed algorithm outperforms the classical algorithms