Method for increasing luminance resolution of color panel display systems
US6078307A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0457
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for increasing luminance resolution of color panel systems includes inputting an image, I.sub.0, having a first resolution, wherein image I.sub.0 includes color difference images, C1.sub.0, C2.sub.0 and a luminance image, L.sub.0 ; manipulating images C1.sub.0, C2.sub.0 and L.sub.0 in a first course, including: filtering and subsampling the images to form images, C1.sub.1, C2.sub.1, and L.sub.1, having a second resolution, H.times.V; converting images C1.sub.1, C2.sub.1 and L.sub.1, to a first RGB domain image, RGB.sub.1 ; spatially multiplexing RGB.sub.1 into an image I.sub.A, having a third resolution, 2H.times.2V; and manipulating image L.sub.1 in a second course, including: upsampling L.sub.1 to form L.sub.2, having the third resolution; forming a difference image, I.sub.D between L.sub.2 and L.sub.0 ; converting image I.sub.D into a second RGB domain image, RGB.sub.2,using predetermined values for C1 and C2; subsampling RGB.sub.2, spatially and chromatically, into an image I.sub.B having the third resolution; combining I.sub.A and I.sub.B, in a pixel-dependant manner, into an image I.sub.F ; and dividing I.sub.F into RGB components at the second resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.