Image processing method and apparatus, image processing program and medium storing this program
US8229217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Oct 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2101/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Whether purple fringing (PF) has occurred is determined for every pixel of interest P(i,j) (step 41). The RGB ratio of a purple-fringed pixel P(i,j) at which PF has been determined and the RGB ratio of a PF convergence pixel P(m,n) spaced N pixels away from the purple-fringed pixel P(i,j) within a zone in the proximity of the purple-fringed pixel P(i,j) are calculated (steps 42, 43). A correction coefficient Rev (i,j) that causes the RGB ratio of the purple-fringed pixel P(i,j) to approach the RGB ratio of the PF convergence pixel P(m,n) is calculated (step 44). The purple-fringed pixel P(i,j) is color-corrected using the correction coefficient Rev (i,j) calculated.Purple fringing is made inconspicuous by changing the color of image portions at which purple fringing has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.