arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.2404math.NAcs.NA
收藏

一种收敛的重叠区域分解方法用于全变差最小化

A Convergent Overlapping Domain Decomposition Method for Total Variation Minimization

Massimo Fornasier, Andreas Langer, Carola-Bibiane Schönlieb

AI总结:

本文提出并分析了收敛的序贯和并行重叠区域分解方法,用于求解由数据保真项和全变差约束构成的泛函最小化问题,首次成功解决了全变差最小化这一非线性、非加性、非光滑问题。

摘要:

本文关注于分析收敛的序贯和并行重叠区域分解方法,用于最小化由数据保真项和全变差约束构成的泛函。据我们所知,这是首次成功尝试解决全变差最小化这一非线性、非加性、非光滑问题。我们提供了多个数值实验,展示了该算法在1D信号恢复和2D图像插值/修复问题中的成功应用,以及在压缩感知问题中,从部分傅里叶测量中恢复分段常数医学图像的应用。

英文摘要:

This paper is concerned with the analysis of convergent sequential and parallel overlapping domain decomposition methods for the minimization of functionals formed by a discrepancy term with respect to data and a total variation constraint. To our knowledge, this is the first successful attempt of addressing such strategy for the nonlinear, nonadditive, and nonsmooth problem of total variation minimization. We provide several numerical experiments, showing the successful application of the algorithm for the restoration of 1D signals and 2D images in interpolation/inpainting problems respectively, and in a compressed sensing problem, for recovering piecewise constant medical-type images from partial Fourier ensembles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑