An Efficient Intra Prediction Algorithm for H.264/AVC High Profile

淡江大學機構典藏 > 商管學院 > 經濟學系暨研究所 > 期刊論文 > Item 987654321/101078

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题名:	An Efficient Intra Prediction Algorithm for H.264/AVC High Profile
作者:	Bo Shen;Cheng, Kuo-Hsiang;Yun Liu;Wang, Ying-Hong
贡献者:	淡江大學資訊工程學系
关键词:	H.264/AVC;block size;prediction mode;rate-distortion optimization
日期:	2014-04-01
上传时间:	2015-04-06 09:37:36 (UTC+8)
出版者:	台北市：中華民國電腦學會
摘要:	A simple, highly efficient intra prediction algorithm to reduce the computational complexity of H.264/AVC High Profile is proposed. The algorithm combines two methods. The first method is a quant-based block-size selection decision that is based on the sum of the quantization AC coefficients among intra 8 × 8 mode predictions, combined with an error adjustment to select either intra 4 × 4 or intra 16 × 16 mode predictions. The second method is a novel direction-based prediction mode decision that is used to reduce the possible prediction modes for the rate-distortion (RD) optimization technique. Our experimental results demonstrate that the proposed algorithm reduces the encoding time by approximately 54% compared with that needed for an exhaustive search using the joint model reference software. The peak signal-to-noise ratio degradation is negligible, and the bit rate increment is minimal. Furthermore, the results show that our algorithm achieves a significant improvement in both computation performance and RD performance as compared with the existing algorithms.
關聯:	電腦學刊=JOURNAL OF COMPUTERS 25(1)，頁56-71
显示于类别:	[資訊工程學系暨研究所] 期刊論文 [經濟學系暨研究所] 期刊論文

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