Method of moving a pixel a subpixel distance
US5504849A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1995 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Mar 9, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/59
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method of moving a pixel a subpixel distance and is intended to be applied in picture coding methods to determine the value of a pixel located between the fixed pixels on the screen. The pixel value is calculated using a known motion vector and the pixel values located in the vicinity of the corresponding pixel in the previous picture. According to the invention at least 3.times.3 pixels from the previous picture are used and the pixel value is calculated as a sum of the previous pixel values weighted by coefficients depending of the motion vector. The coefficients are preferrably calculated as polynomials of the subpixel part of the motion vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.