一种改进的Ribbon Snake遥感图像道路自动生成算法  

Improved Ribbon Snake algorithm for automatic road generation

作　　者：胡阳[1,2] 祖克举[3] 李光耀[1] Kacem CHEHDI 

机构地区：[1]同济大学CAD研究中心,上海201804 [2]法国雷恩第一大学多模多组态信号处理实验室,法国雷恩22305 [3]同济大学宽带无线通信与多媒体实验室,上海201804

出　　处：《计算机应用》2009年第3期747-749,791,共4页journal of Computer Applications

摘　　要：针对树木或高大建筑物遮挡以及噪声等因素造成道路提取结果不完整的现象,根据道路的几何特征,在Snake模型中加入道路宽度信息,构造Ribbon Snake模型。为了克服模型对内部参数依赖性较大、容易受到复杂背景干扰影响的不足,采用B样条曲线对道路的平滑性进行约束,与Ribbon Snake相结合建立道路提取算法,通过调节控制点的数目增强曲线的灵活性。从改进的B样条Ribbon Snake的道路网分割结果可以看出,分割的结果更加平滑,精度更高,对噪声具有更好的鲁棒性。In order to modify the incomplete road extraction caused by shadow,shelter and noise in high resolution remote sensing images,a Ribbon Snake model with width information was established based on the geometric characteristics of road.To overcome the great dependence of interior parameters and the easy being affected by the complex background of Ribbon Snake,a B-Spline Ribbon Snake was constructed,where the smoothness of the Snake was implicit in the B-spline formulation and the flexibility of the Snake was a...

关 键 词：道路提取 SNAKE模型 RIBBON SNAKE B样条Snake 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]