Energy-based wavelet system and method for signal compression and reconstruction
US5802369A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Apr 22, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for signal processing using wavelets are disclosed. The method includes the steps of generating a wavelet decomposition tree modeling the signal. The tree includes a plurality of levels of wavelet coefficients representative of the signal. The method further includes determining the actual number of wavelet coefficients available at each of the plurality of levels; measuring mean energy for each of the plurality of levels; and determining a desired number of wavelet coefficients for each of the plurality of levels based on the mean energy determined in the step of measuring. The mean energy in the step of measuring for each of the plurality of levels is indicative of the desired number of wavelet coefficients selected from each of the plurality of level. The method further includes the step of retaining the desired number of wavelet coefficients and forming a compressed representation of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.