A joint content adaptive Rate-Quantization model and region of interest intra coding of H.264/AVC

Ching Yu Wu, Po Chyi Su, Chia Hung Yeh, Hui Chun Hsu

研究成果: 雜誌貢獻會議論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

Assigning an appropriate Quantization Parameter (QP) to the Intra-coded frames is important to the video coding. In this research, a content adaptive Rate-Quantization (R-Q) model is presented to predict the bit usage of Intra-coded frames in H.264/AVC. The relationship between the QP of a macroblock and the block complexity is derived so that a suitable QP can be decided under a target bit-rate. Since the proposed model is built on macroblocks, Region of Interest (ROI) coding can also be achieved. By adjusting the QP value at the macroblock level, more bits can be assigned to the ROI to better maintain its perceptual quality. The experimental results show the feasibility of the proposed R-Q model.

原文???core.languages.en_GB???
文章編號6890247
期刊Proceedings - IEEE International Conference on Multimedia and Expo
2014-September
發行號Septmber
DOIs
出版狀態已出版 - 3 9月 2014
事件2014 IEEE International Conference on Multimedia and Expo, ICME 2014 - Chengdu, China
持續時間: 14 7月 201418 7月 2014

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