可见光云图日食阴影订正方法的改进和应用
摘 要
日食发生时，卫星可见光云图上受其影响区域会出现明显的阴影，使该区域的信息无法得到分析和利用。提出并应用改进的几何模型法对可见光云图日食阴影做订正处理，并计算出指定区域处理前、后的灰度共生矩阵；然后抽取云图纹理特征量对订正效果做进一步分析比较，结果表明，改进后的几何模型法基本消除了日食对云图的影响。
关键词
An Improved Method to Eliminate Eclipse Impact on the Satellite Visible Imagery
() Abstract
Solar eclipse may cause a shadow on satellite visible imagery. So it would have impact on analyzing and applying the information of satellite image in practice. This paper gives an improved method to eliminating eclipse shadow, and has been evaluated through an actual data experiment with gray level concurrence matrix and image texture feature quantities. The results show that improved method is more effective.
Keywords
solar eclipse radiation correction satellite visible imagery gray level coocurrence matrix cloud texture feature quantities
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