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遥感技术与应用  2009, Vol. 24 Issue (1): 88-92    DOI: 10.11873/j.issn.1004-0323.2009.1.88
图像处理     
基于数字建筑物模型的线阵推扫影像真正射纠正
刘军,王冬红,王慧,张强
(信息工程大学测绘学院|河南 郑州 450052)
Digital Building Model Based True Ortho Rectificationof Line Array Pushbroom Images
LIU Jun,WANG Dong-hong,WANG Hui,ZHANG Qiang
(Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China)
 全文: PDF(1787 KB)  
摘要:

分析了利用数字表面模型直接代替数字高程模型进行正射纠正难以达到真正射效果的原因,阐述了遥感影像真正射纠正的基本流程,针对其中的建筑物遮挡区自动检测这一关键问题,以Z-Buffer算法为基础提出一种解决方案,并利用ADS40影像验证了算法的正确性。

关键词: 数字建筑物模型真正射纠正重复映射遮挡检测Z-Buffer算法    
Abstract:

The reason why the goals of true ortho rectification can not be achieved by the replacement of digital elevation model (DEM) with digital surface model (DSM) directly is discussed at first,then the primary workflow of true ortho rectification is discussed. Aiming at automatically detecting the occlusion area of buildings,its key technical matter,a solution based on z-buffer algorithm is proposed. Experimental test using ADS40 three line images shows that related algorithms put forward in this paper is correct.
 

Key words: Digital building model    True ortho rectification    Double mapping    Occlusion detection    Z-buffer algorithm
收稿日期: 2008-06-30 出版日期: 2009-07-29
:  P231.5  
基金资助:

国家863计划项目(2006AA12Z154)、中国博士后科学基金资助项目(20080430587)、地理空间信息工程国家测绘局重点实验室经费资助项目(200820)。

作者简介: 刘军(1978-)|男|博士|讲师|主要从事摄影测量高精度定位、遥感影像几何处理等方面的研究。E-mail:junliu_rs@yahoo.com.cn。
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引用本文:

刘军,王冬红,王慧,张强. 基于数字建筑物模型的线阵推扫影像真正射纠正[J]. 遥感技术与应用, 2009, 24(1): 88-92.

LIU Jun,WANG Dong-hong,WANG Hui,ZHANG Qiang. Digital Building Model Based True Ortho Rectificationof Line Array Pushbroom Images. Remote Sensing Technology and Application, 2009, 24(1): 88-92.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2009.1.88        http://www.rsta.ac.cn/CN/Y2009/V24/I1/88

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