中国空间科学技术

中国空间科学技术

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滤波器的相频特性对像质影响的仿真

郭兆曾,周凡,李玲芝   

  1. 北京卫星信息工程研究所!北京100080,北京卫星信息工程研究所!北京100080,北京卫星信息工程研究所!北京100080
  • 发布日期:1996-10-25

SIMULATION OF INFLUENCE OF FILTER'SPHASE-FREQUENCY CHARACTERISTIC ONREMOTE SENSING IMAGE QUALITY

Guo Zhaozeng Zhou Fan Li Lingzhi (Beijing Institute of Satellite Information Engineering, Beijing 100080)   

  • Online:1996-10-25

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。

关键词: 卫星遥感, 滤波器, 相频特性, 图像质量, 仿真

Abstract: 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.