Savitzky–Golay Smoothing and Differentiation Filter of Even Length: A Gram Polynomial Approach
November 01, 2005
In various fields such as signal processing, imaging processing, analytical chemistry, and spectroscopic analysis, smoothing and differentiation is important and necessary. With a matrix approach, the Savitzky–Golay smoothing and differentiation filter was extended recently to even length. In this article, a more general approach is proposed for convenient computation.