摘要
HDTV的编码器是将HDTV的图像划分成几个子图分别进行编码，然后再合码流成HDTV的码流，图像的活动性分析可以提供田适应Q值选取所需的参数。在软件仿真的基础上，对TM5的算法针对硬件加以改进，提高了图像质量；并对如何用硬件、PLD实现进行了讨论。
The computation of a spatial activity can provide the parameter for adaptive quantization.Basedon software simulation, the algorithm of Test Model 5 (TM5) is improved in this paper.This algorithm is convenient for by hardware implementation and good picture quality is obtained. In this paper, its realization by hardware and PLD is also discussed.
出处
《电视技术》
北大核心
1999年第3期3-5,共3页
Video Engineering
关键词
活动性分析
高清晰度电视
自适应量化
HDTV
Spatial activity analysis High definition TV (HDTY) Adaplive quantization Programmable logic device
