Image interpolation apparatus and methods that apply quarter pel interpolation to selected half pel interpolation results
US7929612B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Feb 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image interpolation apparatus includes a half pel interpolation unit that is configured to perform half pel interpolation on input data to provide half pel interpolation results. A data selection unit is configured to select a portion of the half pel interpolation results to provide a selected portion of the half pel interpolation results. A quarter pel interpolation unit is configured to perform a quarter pel interpolation on the selected portion of the half pel interpolation results, in response to a motion vector. The half pel interpolation unit can operate independent of the motion vector. The quarter pel interpolation unit can generate a data selection signal in response to the motion vector, and the data selection unit can be responsive to the data selection signal. Related methods also are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.