Selection of the maximum dynamic range of transformed data and the data precision of transform matrices according to the bit depth of input data
US10097834B2 · kind B2 · utility
5Cited by
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14Claims
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Key dates
| Filing date | Apr 4, 2014 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Dec 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding image data, including: frequency-transforming input image data to generate an array of frequency-transformed input image coefficients by a matrix-multiplication process, according to a maximum dynamic range of the transformed data and using transform matrices having a data precision; and selecting the maximum dynamic range and/or the data precision of the transform matrices according to the bit depth of the input image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.