从网上搜了些论文来看(Keywords:vehicle detection/feature extraction aerial images)
1、《Vehicle detection on Aerial Images by Extracting Corner Features for Rotational Invariant Shape Matching》发表在2011 11th IEEE International Conference on Computer and Information Technology 作者:Sheng Wang School of Computing and Communications University of Technology, Sydney。
文章框架如左图。首先使用shadow detection 快速定位潜在目标,代替了扫窗的方法,同时还减少了计算量。接着使用Harris Corner Response Map(HCRM)提取特征点(HCRM如右图,在文章中,作者还对比了HCRM和EdgeMap)。再通过当前点的梯度方向与其他点的角度关联测量得到的Corner Feature Sample Points,这样得到的样本点具有旋转不变性。
检测结果