Hojati, Esmaeil, Franche, Jean-François, Coulombe, Stéphane et Vazquez, Carlos.
2017.
« Highly parallel HEVC motion estimation based on multiple temporal predictors and nested diamond search ».
In 2017 IEEE International Conference on Image Processing (ICIP) (Beijing, China, Sept. 17-20, 2017)
pp. 2746-2750.
Compte des citations dans Scopus : 3.
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Résumé
Rate-constrained motion estimation (RCME) is the most computationally intensive task of H.265/HEVC encoding. Massively parallel architectures, such as graphics processing units (GPUs), used in combination with a multi-core central processing unit (CPU), provide a promising computing platform to achieve fast encoding. However, the dependencies in deriving motion vector predictors (MVPs) prevent the parallelization of prediction units (PUs) processing at a frame level. Moreover, the conditional execution structure of typical fast search algorithms is not suitable for GPUs designed for data-intensive parallel problems. In this paper, we propose a novel highly parallel RCME method based on multiple temporal motion vector (MV) predictors and a new fast nested diamond search (NDS) algorithm well-suited for a GPU. The proposed framework provides fine-grained encoding parallelism. Experimental results show that our approach provides reduced GPU load with better BD-Rate compared to prior full search parallel methods based on a single MV predictor.
| Type de document: | Compte rendu de conférence |
|---|---|
| Professeur: | Professeur Coulombe, Stéphane Vázquez, Carlos |
| Affiliation: | Génie logiciel et des technologies de l'information, Génie logiciel et des technologies de l'information |
| Date de dépôt: | 04 juill. 2018 12:56 |
| Dernière modification: | 13 mai 2024 15:44 |
| URI: | https://espace2.etsmtl.ca/id/eprint/16805 |
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