基于平行活动围道模型的高分辨率遥感影像城区主干道路段提取  

Parallel Active Contour Model for Main Road Segments Extraction From High-resolution Remote Sensing Images

作　　者：张道兵[1] 刘波[1] 王宏琦[2] 

机构地区：[1]中国科学院西安光学精密机械研究所,西安710068 [2]中国科学院电子学研究所,北京100080

出　　处：《光子学报》2007年第7期1345-1350,共6页Acta Photonica Sinica

摘　　要：为了提取并表示高分辨率遥感影像中的主干道路段,提出了一种多分辨框架下的平行活动围道模型的算法.该算法在活动围道模型原理的基础上,重新定义各能量项:采用抛物线做为道路段的先验模型,增加了平行性能量,并采用多分辨框架下的梯度做为外部能量.该模型的优化过程实现了道路的定位,得到的结果是平行抛物线的参数,实现了道路的矢量表示.实验结果表明,能有效提取高分辨率遥感影像中的主干道路段.An algorithm of parallel active contour model based on multi-scale frame is proposed to extract and represent main road segments from high-resolution remote sensing images. Energies in active contour model are redifined as following： using parabola to model two sides of main road segments as a prior, adding parallel energy, and adopting gradients in multi-scale frame as exterior energy. Optimizing the model results in location the two edges of road which is represented as a vectorgraph by the parameter of parallel parabolas. Experiment results demonstrate the algorithm＇s effectiveness in extracting main road segments from high-resolution images.

关 键 词：图像处理 图像分割 道路提取 活动围道模型 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]