Image processing apparatus, display device, and image processing method for edge-preserving smoothing
US7961977B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2010 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Apr 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, an image processing apparatus includes an ε filter that compares the difference between a pixel value of a target pixel to be processed and that of a surrounding pixel neighboring the target pixel in each pixel block of an input image with a predetermined threshold. When the difference exceeds the predetermined threshold, the ε filter performs the replacement of the pixel value of the surrounding pixel. The predetermined threshold includes at least two different thresholds, a first threshold and a second threshold larger than the first threshold. When the difference exceeds the second threshold, the ε filter performs the replacement of the pixel value of the surrounding pixel in stages such that the pixel value of the surrounding pixel approaches that of the target pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.