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The use of a cross‐correlation technique to enhance Jansson's deconvolution procedure
Author(s) -
Crilly Paul Benjamin
Publication year - 1990
Publication title -
journal of chemometrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.47
H-Index - 92
eISSN - 1099-128X
pISSN - 0886-9383
DOI - 10.1002/cem.1180040404
Subject(s) - deconvolution , repeatability , cross correlation , noise (video) , correlation , filter (signal processing) , signal (programming language) , statistics , mathematics , computer science , artificial intelligence , geometry , image (mathematics) , computer vision , programming language
The use of a cross‐correlation prefiltering technique to enhance the ability of Jansson's iterative deconvolution procedure to deconvolve extremely noisy chromatographic data is investigated. Test cases include peaks whose resolutions are as low as 0.35 and whose signal‐to‐noise ratios are as low as 1:1. Evaluation criteria include RMS error, relative peak error and peak area repeatability. For comparison purposes, relative peak area errors and peak area variances are also evaluated for noisy but well resolved peaks that have only been prefiltered with the cross‐correlation filter. Jansson's method in conjunction with cross‐correlation prefiltering is shown not only to resolve overlapped peaks but in some cases to improve their signal‐to‐noise ratios. The study also establishes some limits to the capabilities of Jansson's method will regard to adverse data conditions.