Wavelet packet transform applied to a set of signals: A new approach to the best-basis selection

✍ Scribed by B. Walczak; D.L. Massart

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 776 KB
• Volume: 38
• Category: Article
• ISSN: 0169-7439
• DOI: 10.1016/s0169-7439(97)00050-6

✦ Synopsis

A new approach to best-basis selection for a set of signals, enabling significant and uniform data compression in the time-frequency domain, is proposed. The high degree of data compression can be used as the first step of fast approximate principal component analysis (PCA) of data sets with high rank (~ 104). The performance of the proposed approach is tested for two data sets and compared with Wickerhauser's approach of fast approximate PCA.