Image processing method, apparatus, and program
US7308152B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2002 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Sep 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing method, having the steps of: transforming color image signals representing an original image into a luminance signal and color difference signals; transforming the luminance signal and the color difference signals separately into multi-resolution signals of the level 1 to the level N; applying an inverse multi-resolution transform to the color difference multi-resolution signals, after suppressing the high-frequency components of the level 1 of the color difference multi-resolution signals; applying an inverse multi-resolution transform processing to the luminance multi-resolution signals, after applying a coring processing using a condition for each level different from other levels to the high-frequency signals of each level of the luminance multi-resolution signals; transforming the processed luminance signal and the processed color difference signals into a set of processed color image signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.