一种基于差分的彩色航空影像阴影检测方法

Shadow Detection of Color Aerial Images Based on Difference

针对彩色航空影像阴影检测中植被容易被误检的问题,提出了一种基于像素间差分的阴影检测算法。建立植被检测指数,对植被区域进行预检测,提高阴影检测的精度。检测实验表明,本文算法能较好的对存在植被区域的遥感影像进行阴影检测。

A shadow detection method is proposed based on difference of pixels in color aerial images. In shadow detecting, green vegetation is susceptible to be detected as shadow because of similar spectral characteristics. To improve the detection accuracy, a vegetation index is build to distinguish the vegetation area from the image as preprocessing. Experiments with several aerial images indicate that our shadow detection method is valid.