Image processing apparatus and method, and medium containing image processing control program
US6914628B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1998 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Nov 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Conventionally, in image processing using a smoothing filter, the large amount of calculation for 25× the number of pixels takes much processing time. A computer 21 as the nucleus of image processing determines whether or not a pixel of interest is a color blur pixel, based on the intensity of a low-density element color, at steps S130 and S140. If the pixel is a color blur pixel, the computer 21 determines whether or not the color blur pixel is an edge pixel at step S150. If the pixel is not an edge pixel, the computer 21 uses a smoothing filter at step S152, while if the pixel is an edge pixel, the computer 21 uses a median filter at step S154, in image processing to reduce the color blur. This reduces the amount of calculation and realizes high-speed image processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.