Methods and systems for inter-layer image prediction with color-conversion
US7826673B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Sep 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods for predicting a high dynamic range (HDR) image element based on a received low dynamic range (LDR) image element or data and a HDR image element or data. LDR data is extracted to create either a color-converted image element or a LDR image luminance element and a LDR image chrominance element. The created image element or elements are modified either based on prediction data or through a luminance modification operation and a chrominance modification operation. The HDR residual image element is then combined with either a HDR prediction image element or a HDR luminance prediction element and a HDR chrominance prediction element to form an HDR image element. Alternatively, a residual HDR image element may be calculated through a comparison operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.