Abstract
In this paper, a novel hierarchical mode selection algorithm is proposed to reduce the complexity of the mode selection process for P-Slices in H.264/AVC. Generally, the proposed algorithm is divided into two major stages –inter mode selection and intra mode selection. For inter mode selection, a three-level prediction structure is proposed with a flexible early termination strategy, which can efficiently skip the unnecessary mode checking while achieving a high prediction accuracy. For intra mode selection, the spatial correlation and the information of the best inter mode are exploited to decide whether the intra mode selection can be skipped. If intra mode selection is necessary, an early selection between Intra16x16 and Intra4x4 will be given. Experiment results show that with this algorithm, 50%~80% encoding time can be saved with a negligible loss in PSNR and very little increment in bit rates.
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Zhou, X., Yuan, C., Li, C., Zhong, Y. (2008). A Novel Hierarchical Mode Selection Algorithm for P-Slices in H.264/AVC. In: Huang, YM.R., et al. Advances in Multimedia Information Processing - PCM 2008. PCM 2008. Lecture Notes in Computer Science, vol 5353. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89796-5_17
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DOI: https://doi.org/10.1007/978-3-540-89796-5_17
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-89795-8
Online ISBN: 978-3-540-89796-5
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