Method and apparatus for performing transformation using layered givens transform
US10743025B2 · kind B2 · utility
0Cited by
0References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2017 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Sep 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for performing transformation using a layered Givens transform (LGT), comprising the steps of: deriving at least one rotation layer and at least one permutation layer on the basis of a given transform matrix (H) and a given error parameter; acquiring a LGT coefficient on the basis of the rotation layer and the permutation layer; and quantizing and entropy-encoding the LGT coefficient, wherein the permutation layer comprises a permutation matrix obtained by permuting a row of an identity matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.