An Efficient Intra Prediction Algorithm for H.264/AVC High Profile
學年 102
學期 2
出版（發表）日期 2014-04-01
作品名稱 An Efficient Intra Prediction Algorithm for H.264/AVC High Profile
作品名稱（其他語言）
著者 Bo Shen; Cheng, Kuo-Hsiang; Yun Liu; Wang, Ying-Hong
單位 淡江大學資訊工程學系
出版者 台北市：中華民國電腦學會
著錄名稱、卷期、頁數 電腦學刊=JOURNAL OF COMPUTERS 25(1)，頁56-71
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.
關鍵字 H.264/AVC;block size;prediction mode;rate-distortion optimization
語言 en_US
ISSN 1991-1599
期刊性質 國內
收錄於 EI
產學合作
通訊作者 鄭國祥
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
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