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   heuristic graph search 在 自然地理学和测绘学 分类中 的翻译结果: 查询用时:0.579秒
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heuristic graph search
相关语句
  启发式图搜索
    5. A Heuristic Graph Search algorithm used to extract road semi-automatically mainly from low-resolution satellite imagery is presented.
    5、提出一种主要适用于低分辨率遥感影像的基于启发式图搜索法A~*算法的道路半自动提取方法。
短句来源
    The theory of utilization of Heuristic Graph Search techniques in recognizing line object is to use graph structure to express the edge points and edge segments, to caculate power value to vertices according to the heuristic function, and then to build corresponding cost function on the graph path.
    启发式图搜索法用于线状目标识别的原理是 :用图结构表示边缘点和边缘段 ,根据启发函数计算顶点权值 ,在图的路径上建立相应的代价函数 ,通过在图中搜索对应的最小代价的通道以找到最优路径。
短句来源
  启发式图搜索
    5. A Heuristic Graph Search algorithm used to extract road semi-automatically mainly from low-resolution satellite imagery is presented.
    5、提出一种主要适用于低分辨率遥感影像的基于启发式图搜索法A~*算法的道路半自动提取方法。
短句来源
    The theory of utilization of Heuristic Graph Search techniques in recognizing line object is to use graph structure to express the edge points and edge segments, to caculate power value to vertices according to the heuristic function, and then to build corresponding cost function on the graph path.
    启发式图搜索法用于线状目标识别的原理是 :用图结构表示边缘点和边缘段 ,根据启发函数计算顶点权值 ,在图的路径上建立相应的代价函数 ,通过在图中搜索对应的最小代价的通道以找到最优路径。
短句来源
  “heuristic graph search”译为未确定词的双语例句
    Semi-automatic Extraction of Roads from Satellite Imagery Based on Heuristic Graph Search
    基于启发式图搜索的遥感影像道路半自动提取
短句来源
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  heuristic graph search
Any standard systematic heuristic graph search algorithm can be applied.
      


The theory of utilization of Heuristic Graph Search techniques in recognizing line object is to use graph structure to express the edge points and edge segments, to caculate power value to vertices according to the heuristic function, and then to build corresponding cost function on the graph path. Graph Search algorithm is a global optimum operator, so it has good results even if there are influences of noise. In this paper, a semi-automatic road extraction scheme is proposed...

The theory of utilization of Heuristic Graph Search techniques in recognizing line object is to use graph structure to express the edge points and edge segments, to caculate power value to vertices according to the heuristic function, and then to build corresponding cost function on the graph path. Graph Search algorithm is a global optimum operator, so it has good results even if there are influences of noise. In this paper, a semi-automatic road extraction scheme is proposed in detail. At first an adaptive low-pass filter is built up for road enhancement, and then a road model is formulated with six photometric and geometric properties, at last road semi-extraction is realized sequentially by A* algorithm. Some experimental results are also presented in this paper.

启发式图搜索法用于线状目标识别的原理是 :用图结构表示边缘点和边缘段 ,根据启发函数计算顶点权值 ,在图的路径上建立相应的代价函数 ,通过在图中搜索对应的最小代价的通道以找到最优路径。图搜索法是一种全局最优方法 ,它在受噪声影响较大时效果仍然较好。文中使用了启发式图搜索法 (A 算法 )实现了道路的半自动跟踪。它的基本思路是 :首先利用自适应平滑滤波算子进行道路信息增强 ,然后对传统的道路数学模型进行了进一步的扩展 ,突出了对道路几何特性和辐射特性的描述 ,并依此构建图搜索的代价函数 ,实现了基于启发式图搜索法A 算法的道路半自动跟踪。经实验证明 ,该方法进行遥感影像的道路半自动提取效果较好。

Firstly this paper introduces the cognitive psychology and perceptual theory briefly. Then an automatic approach of extracting road based on road model and perceptual organization is presented. This method utilizes the global information to lead the road segments regrouping and uses the Heuristic Graph Search Algorithm-A* algorithm to link the curve parts of road, which improves the result of local grouping and enhances the reliability of road extraction greatly.

在简要介绍认知心理学和感知觉理论的基础上 ,提出了道路模型约束下的基于感知编组的道路网自动提取策略 ,其特点是利用全局特征约束条件对道路段局部编组结果进行迭代重组 ,并使用了启发式图搜索法A 算法来辅助道路段的曲线连接 ,从而弥补了局部编组的缺点 ,极大地提高了道路提取的可靠性

 
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