利用阴影计算建筑物高度的模型比较分析

Model Comparison of Extracting Building Height Using Image Shadow

目前有多种利用高分辨率卫星影像阴影计算建筑物高度的模型,但模型的适用条件却很少讨论。本文对利用单张高分辨率卫星影像提取建筑物高度的模型进行综合分析,并利用QuickBird影像数据和实测建筑物高度数据对不同的计算模型进行验证分析。结果表明,不同的模型在数据的适用性和参数要求方面存在较大差别,而精准计算模型能够适用于多种成像条件的高分辨率影像,具有较好的实用价值。

Up to now,several models have been introduced to extract the building height using shadow of buildings in high resolution satellite image.But these models should be used under different special conditions.To get the adaption and error of the above models,three Quickbird images and surveying data were used to analyse in this paper.The analysis result shows that different model has different request on auxiliary parameters,and the accurate geometry model is suite for many kinds of image.formed in different conditions,therefore which can be used wildly.