Adaptive precision and quantification of a wavelet transformed matrix
US10432937B2 · kind B2 · utility
1Cited by
0References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Aug 15, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for reducing the entropy of an original matrix, includes a step using a wavelet transformation of the original matrix into a transformed matrix, a quantization coefficient corresponding to each wavelet level, the wavelet transformation being calculated in fixed decimal point using a first number of digits at least equal to 1, for example 3 digits, after the decimal point. Such a method is particularly advantageous for image compression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.