A modified spectral conjugate gradient projection method for signal recovery
作者： Zhong Wan , Jie Guo , Jingjing Liu , Weiyi Liu
DOI: 10.1007/S11760-018-1300-2
关键词:
摘要: In this paper, signal recovery problems are first reformulated as a nonlinear monotone system of equations such that the modified spectral conjugate gradient projection method proposed by Wan et al. can be extended to solve problems. view equations’ analytic properties, an improved projection-based derivative-free algorithm (IPBDF) is developed. Compared with similar algorithms available in literature, advantage IPBDF search direction always sufficiently descent well being close quasi-Newton direction, without requirement computing Jacobian matrix. Then, applied into solving number test for reconstruction sparse signals and blurred images. Numerical results indicate either recover less CPU time or reconstruct images higher quality than other ones.
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