Interpolation apparatus, and video signal processing apparatus including the same
US6795123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Apr 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/012
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interpolation apparatus that generates interpolation pixel values necessary for converting input video data of interlace scanning into video data of progressive scanning is provided. A plurality of candidate pixel-pairs each of which is composed of two pixels that are symmetric with respected to a pixel that is going to be interpolated are selected from pixels on adjacent two scan lines within one field of the input video data, and a difference between pixel values of each selected pixel-pair is calculated. A pixel-pair to be used for generating the interpolation pixel value is determined, based on the smallest difference and the second smallest difference of the calculated differences. An interpolation pixel value of the pixel that is going to be interpolated is generated based on pixel values of the determined pixel-pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.