System and method for effectively rendering high dynamic range images
US6993200B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Nov 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for rendering high dynamic range images includes a rendering manager that divides an original luminance image into a plurality of original subband images. The rendering manager converts the original subband images into original contrast images which are converted into original perceived contrast images. The rendering manager performs a compression procedure upon the original perceived contrast images to produce compressed perceived contrast images. The rendering manager converts the compressed perceived contrast images into compressed contrast images which are converted into compressed subband images. The rendering manager performs a subband combination procedure for combining the compressed subband images together with a lowest-frequency subband image to generate a rendered luminance image. The rendering manager may combines the rendered luminance image with corresponding chrominance information to generate a rendered composite image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.