摘要
分析了H.26L中熵编码的原理和特点,比较了两种不同熵编码方法的优缺点、性能差异和发展方向,提出了一种基于量化参数QP的熵编码改进方法。实验证明这种方法能在信道传输率变化到一定程度时,动态调整熵编码的方法,使H.26L熵编码器在复杂度和编码效率两方面作出合理的权衡。
This paper analyses the theory and ch aracteristic of entropy coding in H.26L,compares the advantages,disadvantages and t he performance of two entropy coding methods,and presents an im-proved entropy coding method based o n the quantization parameter QP.The experimental results show that H.26L entropy encoder can provide a g ood tradeoff between complexity and coding efficiency according to the improved entropy coding method.
出处
《通信技术》
2002年第11X期1-3,6,共4页
Communications Technology
