Method and apparatus for de-interlacing video fields for superior edge preservation
US6295091A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1997 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Nov 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods of interpolating missing pixels between interlaced scan lines is disclosed. A first method interpolates a desired pixel by selecting the median pixel from a first pixel above and to the left of the desired pixel, a second pixel above the desired pixel, a third pixel above and to the right of the desired pixel, a fourth pixel below and to the left of the desired pixel, a fifth pixel below the desired pixel, a sixth pixel below and to the right of the desired pixel, and a seventh pixel from the previous video field having same position of the desired pixel. A second method of interpolating a desired pixel between scan lines first selects a minimal variance direction between: a first direction comprising a first pixel above and to the left of the desired pixel and a second pixel below and to the right of the desired pixel, a second direction comprising a third pixel above the desired pixel and a fourth pixel below the desired pixel, and a third direction comprising a fifth pixel above and to the right of the desired pixel and a sixth pixel below and to the left of the desired pixel. Then the second method selects the two pixels comprising the minimal variance direction as a mi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.