西安电子科技大学综合业务网国家重点实验室,西安,710071
网络首发:2010-04-10,
纸质出版:2010
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李宏伟, 吴成柯, 宋锐. 多扫描双向参考的快速帧内预测算法[J]. 西安交通大学学报, 2010,44(4):98-102+113.
Multi-Scan and Bi-Directional Reference Fast Intra Prediction[J]. 2010, 44(4): 98-102+113.
为了进一步提高帧内预测算法的编码性能
提出了一种多扫描双向参考的快速帧内预测算法.首先通过边缘相关性选取最优的扫描模式
并通过预处理缩减单向参考预测模式的数量
然后以哈达马变换比为权重确定双向参考的预测模式
最后利用简化的率失真模型确定最终的预测模式
并用这些预测模式进行编码
大幅度提高了编码性能.仿真结果表明
与双扫描双向参考帧内预测算法相比
该算法在大幅度减少编码时间的情况下
不但使输出码率降低了2.74%
而且使重建图像的平均峰值信噪比提高了0.13 dB.
A multi-scan and bi-directional reference fast intra prediction algorithm is proposed to improve the performance of intra prediction. One or more scanning modes are determined by the fringe relativity
and the number of unidirectional intra prediction modes is reduced by preprocessing. Bi-direction intra prediction modes are determined by the sum of absolute transformed difference. The final intra prediction modes are determined by simple distortion
and then encoded to greatly improve the encoding quality. Simulations and comparisons with the double scanning mode and bi-direction intra prediction algorithm show that coding time of the proposed algorithm is reduced greatly
bitrate is reduced by 2.74% and power signal noise ratio is increased by 0.13 dB.
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一种方向提升小波变换和网格编码量化的图像编码算法.西安交通大学学报,2010,44(2):67-71.
任意视点电视系统中深度数据的自适应非均匀量化方法.西安交通大学学报,2010,44(2):82-87.
判断运动复杂度的快速运动估计算法.西安交通大学学报,2009,43(10):81-84.
视频通信中的选择性重传技术.西安交通大学学报,2009,43(6):82-87.
适合于小波视频编码的尺寸自适应图像组结构.西安交通大学学报,2009,43(4):52-59.
利用MPEG-4视频流的运动目标检测算法.西安交通大学学报,2008,42(4):454-457.
保证H.264视频通信质量的实时传输协议载荷.西安交通大学学报,2007,41(12):1455-1459.
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