Method and system for removing isolated pixel portions in image
US7046399B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Oct 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Isolated pixel portions are removed from an image based upon a minimum of a two-step detection process. A first step is to compare the parallel edges of a predetermined unit area to a predetermined first threshold value so as to detect a possible line or continuous image in the predetermined area in a first direction. A second step is to ascertain that another line or continuous image exists in a second direction which is perpendicular to the first direction by comparing the average pixel values from lines of pixels in the second direction. Based upon the two comparison results, it is determined whether or not an isolated portion exists in the predetermined unit area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.