鍏抽敭璇�: 楂樺垎杈ㄧ巼鍗槦褰卞儚, 鍚屽悕鐩磋竟璺�, 涓绘柟鍚�, 娴嬮珮妯″瀷, 楂樺害鎻愬彇

Abstract: Based on the idea of the same-name feature锛宼he distance of the same-name straight edge and the main direction parameters of the building are introduced锛宎nd the altimetry model of the flat-top straight-edged building is constructed.The feature information extraction technology combining object-oriented and expert knowledge is used to realize the height extraction of the building.Firstly锛寀sing the spectral and shape features of the shadow锛宼he detection and localization of the same-name straight edge of the building is carried out from high spatial resolution image.Secondly锛宐ased on the detected same-name straight edge vector and the parameter calculation model锛宼he distance of the same-name straight edge parameter is extracted.Finally锛宐ased on Building imaging conditions and a new altimetry model to extract building height.The experiment of using the IKONOS and GF-2 image in Beijing area show that the scheme solves the problem that the shadow length of the conventional method is not easy to measure锛宎nd the precision is high锛宺eaching the level of the meter锛寃ith good human-computer interaction and strong practicality in business operation.

Key words: High-resolution satellite imagery, Distance of the same-name straight edge, Main direction, Altimetry model, Height extraction