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Generalized 2-Microlocal Frontier Prescription
Journal of Fourier Analysis and Applications ( IF 1.2 ) Pub Date : 2020-11-20 , DOI: 10.1007/s00041-020-09791-1
Ursula Molter , Mariel Rosenblatt

The characterization of local regularity is a fundamental issue in signal and image processing, since it contains relevant information about the underlying systems. The 2-microlocal frontier, a monotone concave downward curve in \(\mathbb {R}^2\), provides a useful way to classify pointwise singularity. In this paper we characterize all functions whose 2-microlocal frontier at a given point \(x_0\) is a given line. Further, for a general concave downward curve, we obtain a large family of functions (or distributions) for which the 2-microlocal frontier is the given curve. This family contains—as special cases—the constructions given in Meyer (CRM monograph series, 1998), Guiheneuf et al. (ACHA 5(4):487–492, 1998) and Lévy Véhel et al. (Proc Symp Pure Math 72:319–334, 2004). Moreover, following Lévy Véhel et al. (2004), we extend our results to the prescription on a countable dense set.



中文翻译:

广义2-微局部边界处方

局部规律性的表征是信号和图像处理中的一个基本问题,因为它包含有关底层系统的相关信息。2微局部边界,\(\ mathbb {R} ^ 2 \)中的单调凹向下曲线,提供了一种有用的方式对点奇点进行分类。在本文中,我们描述了在给定点\(x_0 \)处其2微局部边界的所有函数是给定的行。此外,对于一般的向下凹曲线,我们获得了大量的函数(或分布),其中2个微局部边界是给定曲线。作为特殊情况,该族包含在Meyer(CRM专着系列,1998年),Guieheneuf等人给出的结构中。(ACHA 5(4):487-492,1998)和LévyVéhel等。(Proc Symp Pure Math 72:319–334,2004年)。此外,按照LévyVéhel等人的方法。(2004),我们将结果扩展到可数密集集上的处方。

更新日期:2020-11-21
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