Method and system for linear quantization and dequantization
US8451892B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2009 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Mar 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method including receiving a set of input data in a first matrix format. The method further includes compressing the set of input data to obtain a first set of compressed data in a second matrix format, where compressing the set of input data includes using a quantization equation, the quantization equation including Yq(i,j)=[(Y(i,j)+offset)<<n]/qs, where Yq(i,j) represents a coefficient in a matrix of the first set of compressed data having a coordinate (i,j), Y(i,j) represents a coefficient in a matrix of the set of input data having the coordinate (i,j), offset is an integer, << is a first bit-wise shift operator, n is an integer, qs is a real number. The method also includes sending the first set of compressed data to a first destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.