Methods and systems for coding multiple dynamic range images
US7760949B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the present invention relate to systems and methods for encoding and decoding digital images. Some aspects relate to a method for encoding and decoding image data wherein a prediction base image based on a low dynamic range (LDR) image and a high dynamic range (HDR) image corresponding to the LDR image are analyzed and a difference image is determined in the spatial domain, wherein the difference image represents the difference between the prediction base image and the HDR image. In some cases, the difference image values are quantized and sorted into an order based on the values of corresponding pixels in the LDR image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.