Image processing method and apparatus
US6771793B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2000 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Feb 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Band-limited image signals representing images, each of which is of one of different frequency bands, are formed from an original image signal representing an original image. A pixel vector at each of pixels in each of the band-limited images, which are represented by the band-limited image signals, is calculated. A noise component and an edge component of each of the band-limited images are separated in accordance with the calculated pixel vector. Smoothing processing for the noise component and/or enhancement processing for the edge component is performed on each of the band-limited image signals to obtain a processed band-limited image signal. A processed image signal is then obtained in accordance with the thus obtained processed band-limited image signals. The image processing is thus performed such that noise components contained in the image become imperceptible, and such that a structure pattern contained in the image becomes perceptible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.