基于交叉熵的特征提取与河流区域的目标检测

Cross-entropy based parameter for target detection in the river area

基于交叉熵提出了一种新的参数来衡量河流区域与其他区域的区别。该参数能在河流区域很好地进行舰船检测与桥梁检测。通过确定河流的边界,舰船和桥梁只在河流区域进行检测,所以绝大部分的虚警点都被消除。利用日本新泻地区的X波段全极化数据进行验证,表明该方法具有良好的检测性能。

A cross-entropy based parameter is proposed to measure the difference between a river area and other areas. This parameter can be employed for ship detection and bridge detection from a polarimetric SAR image. After the boundaries of the river area are determined, ships and bridges are detected only in the river area instead of the whole area. Therefore, most of the false alarms are eliminated. Finally, the performance of this new approach is validated by the X-band full polarimetric SAR data in Niigata area of Japan.