| 基于AVS1-P2的快速帧内预测算法 |
| |
| 引用本文： | 夏鹏,宋雪桦,陈景柱,陈丽莲.基于AVS1-P2的快速帧内预测算法[J].计算机工程,2010,36(24):223-225. |
| |
| 作者姓名： | 夏鹏 宋雪桦 陈景柱 陈丽莲 |
| |
| 作者单位： | (江苏大学计算机科学与通信工程学院，江苏 镇江 212013) |
| |
| 基金项目： | 镇江市2008年产学研基金资助项目 |
| |
| 摘 要： | AVS1-P2标准参考软件rm52j的RDCost算法能很好地平衡视频编码质量和编码效率，但RDCost的计算复杂度大，占用了大量的编码时间。针对该问题，提出一种快速预测算法，利用帧内8×8亮度块亮度变化的方向性和邻块间预测模式的相关性进行帧内预测。实验证明，与全搜索算法相比，快速预测算法的编码时间平均节省了17%左右，且PSNR和比特率几乎不变。
|
| 关 键 词： | 帧内预测 模式判决 率失真优化 |
Rapid Intra-predication Algorithm Based on AVS1-P2 |
| |
| XIA Peng,SONG Xue-hua,CHEN Jing-zhu,CHEN Li-lian.Rapid Intra-predication Algorithm Based on AVS1-P2[J].Computer Engineering,2010,36(24):223-225. |
| |
| Authors: | XIA Peng SONG Xue-hua CHEN Jing-zhu CHEN Li-lian |
| |
| Affiliation: | (School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China) |
| |
| Abstract: | The reference soft rm52j for AVS1-P2 standard adopts RDCost algorithm to balance the coding quality and coding rate pretty well to achieve better efficiency, but it takes plenty of coding time because of high computational complexity. Aiming at this problem, a fast algorithm is proposed to reduce candidate prediction modes with increasing predication speed according to the directivity of luminance variation within a 8×8 block and the correlation of adjacent blocks. Experimental results show that the fast algorithm can save coding time by 17% on average with code rate increasing slightly and PSNR almost unchanged. |
| |
| Keywords: | intra-predication mode decision Rate Distortion Optimization(RDO) |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《计算机工程》浏览原始摘要信息 |
|
点击此处可从《计算机工程》下载全文 |
