基于面向对象技术的高分辨率遥感影像的阴影检测与去除

Shadow Detection and Removal Based on Object-oriented Method in High Spatial Resolution Remote Sense Image

阴影是高分辨率遥感影像的基本特征之一,阴影的检测对于影像的目标识别和信息恢复十分关键。采用面向对象的技术,通过图像分割,获取阴影对象,结合阴影对象的特征,设置特征函数并分类,最后获得阴影区域。试验证明,该方法简单易行,较精确地提取了阴影区域。

Shadow detection in high spatial resolution remote image is very critical for target identification and information recovering. In this paper ,an object-oriented method is used to detect shadow area. Firstly, the image is processed by segmentation to attain the image objects, then the knowledge is established according to the analysis of the spectral character of tb.e shadow area in the image. Finally, the shadow area could be extracted by using the rules defined in the knowledgebase. The experiment result shows that this method is valid.