Methods for comparing a target block to a reference window for motion estimation during video encoding
US9497482B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2013 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Dec 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for comparing a target block to a reference window in motion estimation calculations, comprises the steps of: determining SAD calculations as a function of the target block and the reference window; reading the target block into registers; reading a segment of the reference window; updating the determined SAD calculations on the fly as a function of the read target block and the read segment of the reference window; and determining one or more sub-blocks of the reference window having minimum SAD values as a function of the updated SAD calculations; and if one or more of the minimum SAD values are not found, repeating the reading a segment step, the updating step and the determining step for a next segment of the reference window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.