利用高分辨率航空影像阴影提取城市建筑物高度信息  

Extracting Height Information of Urban Buildings Using High-resolution Aerial Image Shadows

作　　者：邓焯文 湛青青[2] 李红刚 DENG Zhuowen;ZHAN Qingqing;LI Honggang(Guizhou Province Surveying and Mapping Product Quality Supervision and Inspection Station;Guizhou Provincial First Institute of Surveying and Mapping,Guiyang,Guizhou Province,550025 China)

机构地区：[1]贵州省测绘产品质量监督检验站 [2]贵州省第一测绘院,贵州贵阳550025

出　　处：《科技资讯》2020年第23期47-51,共5页Science & Technology Information

摘　　要：建筑物三维景观模型的建立是城市三维景观重建的关键,建筑物三维景观模型受建筑物的几何外形特征、高度及纹理等重要因素的影响。该文主要阐述规则建筑物的原理与算法,利用高分辨率航空影像图,结合分割技术、分类技术和优化技术,推算影像上建筑物阴影的长度,进而提取建筑物的高度。建筑物纹理信息通过影像信息或者摄影方式获取,为建筑三维景观图增加真实感和可视性。Three-dimensional landscape model building is the key to urban three dimensional landscape reconstruction,3 d landscape models by building the structure of the geometric shape characteristics,the influence of the height and the texture and other important factors.This article mainly describes the principles and algorithms of regular buildings by using high resolution aerial imagery,and combines segmentation,classification,and optimization techniques to estimate the length of the shadow on the impact,and then extract the height of the building.Building texture information is obtained through image information or photography,which adds realism and visibility to the 3D landscape map of the building.

关 键 词：高分辨率影像 图像阴影 建筑物高度 纹理 

分 类 号：P2[天文地球—测绘科学与技术]