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Issue:
Automated 3D Building Modeling Based on Urban Aerial Stereopair
Author(s):
CHEN Aijun
,
XU Guangdai
,
SHI Yuanchun
Pages:
54
-
59
Year:
2002
Issue:
1
Journal:
ACTA GEODAETICA ET CARTOGRAPHICA SINICA
Keyword:
虚拟城市
;
2维建筑物检测
;
立体像对匹配
;
自适应最小二乘相关
;
Abstract:
城市建筑物3维建模是虚拟城市建设的关键技术之一.基于大比例尺航空立体像对提出3维建筑物建模方法.首先对2维边缘检测Canny算子进行改进,以期从城市航空影像中检测出较为精确的2维建筑物轮廓线.然后把改进的自适应最小二乘相关算法运用到金字塔匹配算法中,由于金字塔匹配算法中最为关键的问题是误差传递的有效控制,而以往的研究中尽管采用了多种控制策略但效果不是很好,作者通过提出2种新的误差传播控制策略得到了较高精度的匹配结果.利用匹配生成的高精度3维信息对检测到的2维建筑物轮廓线进行3维插值,获得建筑物的3维信息,由此实现了建筑物3维建模.
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