CTI改进算法及其硬件实现  

An Improved Algorithm of CTI and its Implementation on Hardware

作　　者：陈涛[1] 李铭[1] 汪颖[1] 王匡[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《中国有线电视》2003年第19期17-19,共3页China Digital Cable TV

摘　　要：介绍一种色度瞬态校正的改进算法 ,该算法利用低通滤波和核化降噪抑制噪声的影响 ,采用自适应限幅来消除振铃效应和假色现象。仿真结果表明 ,该算法对噪声有很好的抑制作用 ,消除了振铃效应和假色现象。An improved CTI algorithm is introduced. This algorithm makes use of lowpass filter and coring circuit to suppress small noise; utilizes adaptive clamping to eliminate ringing effect and “wrong colours”. Simulation results show that the proposed algorithm has good performance. Implementation on FPGA requires less hard ware resource while achieves good performance.

关 键 词：色度瞬态校正 低通滤波 核化降噪 振铃效应 FPGA 自适应限幅 电视图像处理 

分 类 号：TN941[电子电信—信号与信息处理]