A Novel Saliency Based Bit Allocation and RDO for HEVC
In: Advances in Multimedia Information Processing – PCM 2017 ISBN: 9783319773797 PCM (1); (2018)
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Zugriff:
In this paper, an efficient rate control algorithm is proposed which is based on saliency map for high-efficiency video coding (HEVC). The aim of the proposed algorithm is increasing the amount bits assigned in saliency region. To begin with, the Context-Aware model is used to obtain the saliency map. With the saliency information, a novel scheme is proposed to guide the LCU (Largest Coding Unit) level bit-allocation. Based on that, a novel perceptual rate distortion model is proposed, which takes saliency weight into consideration when performing rate-distortion optimization (RDO). Finally, the experimental results show our algorithm significantly improves the subjective quality of videos compressed by HEVC and gains of 0.61 dB in Y-PSNR.
| Titel: |
A Novel Saliency Based Bit Allocation and RDO for HEVC
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| Autor/in / Beteiligte Person: | Li, Changbin ; Wu, Xiao ; Wang, Bing ; Xu, Jiajun ; Peng, Qiang |
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| Quelle: | Advances in Multimedia Information Processing – PCM 2017 ISBN: 9783319773797 PCM (1); (2018) |
| Veröffentlichung: | Springer International Publishing, 2018 |
| Medientyp: | unknown |
| ISBN: | 978-3-319-77379-7 (print) |
| DOI: | 10.1007/978-3-319-77380-3_7 |
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