摘要
在遥感观测中,目标辐射信息中包含了背景辐射经过大气散射后进入传感器视场的部分,从而使地物边缘模糊,对比度降低,即邻近效应。要从遥感图像中准确获取目标信息,邻近效应校正是必不可少的环节。根据大气辐射传输模型,利用MODIS气溶胶产品并引入新的邻近效应校正系数对高分一号卫星多光谱遥感影像进行邻近效应校正。结果表明,经过校正的遥感影像对比度增强,清晰度增加,地物信息更丰富。
In remote sensing observation, the target radiation information contains background radiation scattered by the atmosphere entering the field of view of the sensor section, which is adjacency effect making the feature edge blurred, contrast lower. In order to obtain accurate target information from remote sensing image, adjacency effect correction is necessary. Using MODIS aerosol products and importing a new adjacency effect correction coefficient to correct adjacency effect of GF- 1 satellite multi- spectral remote sensing images, which are based on the atmospheric radiation transfer model. The results show that after correction, the contrast and the definition of remote sensing image are increased obviously, meanwhile feature information is more abundant.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2016年第2期266-272,共7页
Acta Optica Sinica
基金
中国科学院科技创新重点项目(KGFZD-125-13-006)
关键词
遥感
大气光学
邻近效应
MODIS气溶胶产品
校正系数
remote sensing
atmospheric optics
adjacency effect
MODIS aerosol products
correction coefficient
