计算机工程Issue(10)：187-191,5.DOI:10.3969/j.issn.1000-3428.2013.10.039
基于图的航空图像与GIS模型匹配算法
Matching Algorithm of Aerial Image and GIS Model Based on Graph
摘要
Abstract
Geographic Information System(GIS) is described by semantics. There is no color or gray information in GIS. The matching between aerial images and GIS has to rely on structural features. Restricted by current image processing techniques, the features extracted from images are low informative, have low precision, and usually contain noises. Aiming at these problems, a graph-based matching framework is proposed to align the GIS model and the aerial image. The Undirected Weighted Graphs(UWG) are constructed automatically using the angle between segment lines called UWG-SA for GIS and the extracted image features, respectively. A Graduated Assignment(GA) method is performed to find the global correspondences. It uses the main-direction method to eliminate the incorrect match sets and get the transformation parameters. Experimental results show that the matching probability is about 98.5%, the average matching error is about 8.54 m, and the average cost time is 0.075 s. The algorithm can basically meet the demand for aircraft navigation.关键词
航空图像/GIS模型/无向加权图/线性不变/非精确图匹配/分级指派/主方向法Key words
aerial image/Geographic Information System(GIS) model/undirected weighted graph/linear invariant/inexact graph matching/graduated assignment/main-direction method分类
信息技术与安全科学引用本文复制引用
谷多玉,申浩,叶曙光,林喆,常红星..基于图的航空图像与GIS模型匹配算法[J].计算机工程,2013,(10):187-191,5.基金项目
国家自然科学基金资助项目(61005028,61175032) （61005028,61175032）
