| 真正射影像制作的遮挡区检测方法研究 |
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| 引用本文： | 杨靖宇,张永生,包全福,邹晓亮.真正射影像制作的遮挡区检测方法研究[J].测绘科学,2011,36(2):37-39. |
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| 作者姓名： | 杨靖宇 张永生 包全福 邹晓亮 |
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| 作者单位： | 矿山空间信息技术国家测绘局重点实验室/河南理工大学;信息工程大学测绘学院;东华理工大学江西省数字国土重点实验室; |
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| 基金项目： | 矿山空间信息技术国家测绘局重点实验室(河南理工大学,河南省测绘局)开放基金资助项目(KLM200904); 江西省数字国土重点实验室开放研究基金(DLLJ201006,DLLJ201001) |
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| 摘 要： | 遮挡区检测是真正射影像制作的必要环节之一.本文首先对现有方法进行总结、分析;然后提出一种基于阴影测试技术的快建检测方法,通过成像过程的模拟,将遮挡区检测问题转化为一个阴影测试问题,基于Z-Pass算法,利用三维图形绘制流水线的模板缓存和深度缓存,能够快速确定遮挡区域;最后,进行试验验证,结果表明:利用本文提出的方法仅需...
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| 关 键 词： | 真正射影像 遮挡区检测 阴影测试 Z-Pass 数字建筑物模型 |
Detecting method of occluded area in true orthophoto generation |
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| YANG Jing-yu,ZHANG Yong-sheng,BAO Quan-fu,ZOU Xiao-liang.Detecting method of occluded area in true orthophoto generation[J].Science of Surveying and Mapping,2011,36(2):37-39. |
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| Authors: | YANG Jing-yu ZHANG Yong-sheng BAO Quan-fu ZOU Xiao-liang |
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| Institution: | ②③(①Key Laboratory of Mine Spatial Information Technologies,State Bureau of Surveying and Mapping/Henan Polytechnic University,Henan Jiaozuo 454000,China;②Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China;③Digital Land Key Laboratory of Jiangxi Province,East China Institute of Technology,Jiangxi Fuzhou 344000,China) |
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| Abstract: | Occluded area detecting is an indispensable step of True Orthophoto generation.This paper first summarized and analyzed existing methods;then proposed a new quickly detecting method based on shadow-testing technology,which translated occluded areas detecting problem into a shadow-testing problem by simulating shoot processing,and using stencil buffer and depth buffer of 3D pipe line based on Z-pass algorithm quickly drew the occluded areas;at last,an experiment indicated that this method could accomplish oc... |
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| Keywords: | true orthophoto occluded area detecting shadow-testing Z-Pass digital building model |
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