摘要
遥感成像过程受到大气、成像系统中的光学、探测器和电子器件、卫星平台的运动等影响,引起成像退化,造成图像模糊,降低了像质。图像恢复技术可以改善像质,提高图像信息解译能力。文章简单介绍了遥感图像MTF退化原因,分析了中国相关技术发展现状。在此基础上,介绍了作者的研究成果,其特点是通过获取点扩散函数从而得到遥感图像的调制传递函数(MTF)。实验结果表明,该方法实用可行,MTF图像恢复技术可以明显地提高遥感像质,增强图像的高频部分,使图像易于判读解译。
Due to the effect of atmosphere, optics, detector and satellite motion etc, remote sensing images were often degenerated. Image restoration technology can improve image quality and interpretation capability. This paper summafized the degeneration reasons of MTF and the current research situation of MTF restoration. Based on this, the paper described the author＇s research result, whose characteristic was getting MTF by point spread function. The experiment result indicated that this method was feasible and practical. MTF restoration technology can remarkably improved image quality and eased image interpretation.
出处
《航天返回与遥感》
2009年第1期27-32,共6页
Spacecraft Recovery & Remote Sensing
关键词
遥感图像
调制传递函数
图像复原
空间滤波
像质
Remote sensing image Modulation transfer function Image restoration Space filter Image quality
