摘要
利用计算机仿真的方法,研究了椭圆低通滤波器和Butterworth滤波器的相频特性对像质的影响。这种影响主要有边缘退化、分辨率损失、产生新的干扰条纹和几何畸变以及多波段图像配准精度降低等。
In this paper, used simulation method to analyze and compare the influences of phase-frequency characteristic of Butterworth and Elliptic filters and sampling keeper and their parameters on image quality. The influences include edge degradation, resolution reduction, generation of new strip, geometric distortion and reduction of registration accuacy of multi-spectral image and so on.
出处
《中国空间科学技术》
EI
CSCD
北大核心
1996年第5期41-44,共4页
Chinese Space Science and Technology
关键词
卫星遥感
滤波器
相频特性
图像质量
仿真
Satellite remote sensing Electric filter Phase-frequencycharacteristic Image quality Simulation
