摘要
本文提出一种新的二维递归数字滤波器组──二维跳耦型数字滤波器组的设计与实现方法。这种数字滤波器组的特点为：因果型──可用于实时图像分解与重构；线性相位──可避免传统的二维ＩＩＲ滤波引起的图像的相位畸变；非线性条件下稳定──有限字长实现二维数字滤波器组时，不存在溢出或极限环振荡。实际的图像处理实验证明，本文提出的设计理论及实现方法是正确的、有效的、可行的。
The approaches of design and realization about novel two-dimensional(2-D) recursive digital filter banks──2-D leapfrog have been proposed in the paper.The advantages of the 2-D filter banks are:causal realization──to realize real time image analysis and synthesis,linear phase──to avoid the image phase distortations caused by presented 2-D IIR filtering,and stable under nonlinear conditions──they are no overflow or limit cycle oscillations.Practical experiments of image processing have showed that the theory and approach are correct, effective and pragmatical.
出处
《通信学报》
EI
CSCD
北大核心
1995年第2期65-70,共6页
Journal on Communications
基金
国家自然科学基金
关键词
数字滤波器组
设计
图像子带编码
压缩编码
image subband analysis and synthesis
2-D leapfrog digital filter banks
