Energy-based wavelet thresholding
US9405731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Mar 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data processing system, implemented as programming on a suitably-programmed device includes a data input module that supplies a data input; and a wavelet transformation and compression module coupled to the data input module. The wavelet transformation and compression module receives a representation of the input data. The wavelet transformation and compression module includes an input module having a wavelet basis function, a wavelet coefficient generator that computes wavelet coefficients based on the wavelet basis function and the representation of the input data, a ranking module that orders the n wavelet coefficients, a coefficient multiplier that computes an energy value for each wavelet coefficient, an adder that iteratively computes cumulative energy as a function of the number of coefficients, and a comparator that computes total energy of the data input to the iterative, cumulative energy and selects a number of coefficients whose cumulative energy is substantially invariant with additional coefficients, wherein the selected number of coefficients results in compression of the data input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.