期刊
IEEE SIGNAL PROCESSING MAGAZINE
卷 38, 期 6, 页码 137-145出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MSP.2021.3102900
关键词
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Two popular denoising algorithms, l(2) and l(1) trend filtering, are typically used in various fields such as science, engineering, and statistical signal and image processing. The former is a linear time-invariant filter for smoothing noisy data and detrending time-series signals, while the latter is a nonlinear filtering method for estimating piecewise-polynomial signals.
Two of the most popular denoising algorithms are l(2) and l(1) trend filtering, which are used in science, engineering, and statistical signal and image processing. They are typically treated as separate entities, with the former as a linear time-invariant (LTI) filter, which is commonly used for smoothing the noisy data and detrending the time-series signals, while the latter is a nonlinear filtering method suited for the estimation of piecewise-polynomial signals (e.g., piecewise constant, piecewise linear, piecewise quadratic, and so on) observed in additive white Gaussian noise.
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