摘要
H.264是目前应用最广泛的视频编码标准,相比于以前的标准,H.264在编码效率上得到了很大的提高。但是相应的计算复杂度也是成倍增加。在此提出一种改进的预测算法,通过时域相关性系数和空域相关性系数排除帧内预测或帧外预测的一些模式,初步减少编码复杂度,再针对分析结果利用已有的快速选择算法对帧内帧外预测模式的最优预测模式组进行预测,进一步加快编码速度。实验结果表明,改进的快速算法在不影响编码质量的同时能够有效地减少计算复杂度和提高编码速度。
H.264 is a widely used video frequency code standard at present,compared with other standard in the before,H.264 has got very big improved on code efficiency.But calculation complicated degree is also increased by several times.In this paper,a fast adaptive inter（intra） modes decision method is proposed to reduce the complexity of H.264.FIRST,some modes of inter（intra） are removed by analysing correlativity modulus.Making use of todays′algorithm,code speed is accelerated further.The experimental results show that the proposed method can reduction extensively computation without any perceivable loss in qualit.
出处
《现代电子技术》
2009年第18期62-64,共3页
Modern Electronics Technique
基金
陕西省教育厅科研专项基金资助项目(07JK292)
