an:01146022
Zbl 0902.65097
Ehrich, Sven
Sard-optimal prefilters for the fast wavelet transform
EN
Numer. Algorithms 16, No. 3-4, 303-319 (1997).
00047816
1997
j
65T60 42C40
fast wavelet transform; refinement equation; prefiltering quadrature formulas
The author remarks that a direct input of function samples into the fast wavelet transform often gives inaccurate results. He uses the refinement equation for the construction of prefiltering quadrature formulas which are optimal in the sense of \textit{A. Sard} [Mathematical Surveys 9 (1963; Zbl 0115.05403)]. He gives a detailed analysis of the error and several applications.
Khalifa Trim??che (Tunis)
Zbl 0115.05403