Inter-prediction candidate selection in a mode decision
US10237571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2018 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Jan 30, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus includes a first circuit and a second circuit. The first circuit may be configured to (i) fetch a reference samples from a memory to slots in a buffer, (ii) generate motion vectors by motion estimating inter-prediction candidates of a current picture relative to the reference samples in the buffer, (iii) snoop the fetches from the memory to determine if the reference samples fetched for a non-zero motion vector type of the inter-prediction candidates includes the reference samples for a zero motion vector type of the inter-prediction candidates and (iv) avoid duplication of the fetches for the zero motion vector type of the inter-prediction candidates where the snoop determines that the reference samples have already been fetched. The second circuit may be configured to evaluate the reference samples in the buffer based on the motion vectors to select a prediction sample unit made of the reference samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.