arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1706.01799math.NAcs.NA
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通过提升实现从光谱测量中恢复紧支撑函数

Recovery of Compactly Supported Functions from Spectrogram Measurements via Lifting

Michigan State University(密歇根州立大学)

Sami Merhi, Aditya Viswanathan, Mark Iwen

AI总结:

本文提出了一种新的相位恢复方法,用于从连续短时傅里叶变换光谱测量中近似恢复紧支撑函数,方法受投影电子显微镜启发,基于提升的无限维问题形式,并通过截断实现计算。

摘要:

本文提出了一种新的相位恢复方法,受投影电子显微镜启发,用于从连续短时傅里叶变换(STFT)光谱测量中近似恢复紧支撑函数 $f:\mathbb{R}\rightarrow\mathbb{C}$。该方法部分受已知的PhaseLift算法启发,基于提升的无限维问题形式,随后通过截断以实现计算。数值实验展示了所提出方法的潜力。

英文摘要:

A novel phase retrieval method, motivated by ptychographic imaging, is proposed for the approximate recovery of a compactly supported specimen function $f:\mathbb{R}\rightarrow\mathbb{C}$ from its continuous short time Fourier transform (STFT) spectrogram measurements. The method, partially inspired by the well known PhaseLift algorithm, is based on a lifted formulation of the infinite dimensional problem which is then later truncated for the sake of computation. Numerical experiments demonstrate the promise of the proposed approach.

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。

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