CAJ | 학술논문

为了计算交通小区的建筑容积率，利用RPC模型直接从单幅高分辨率卫星影像上提取建筑物高度和层数信息．首先，在纠正后的影像上量取建筑物墙脚点的大地坐标，在影像坐标系中分别量取同一铅垂线上的墙脚点坐标和屋顶点坐标．然后，将量测结果标准化，代入RPC模型，经迭代运算得到墙脚点和屋顶点的大地高，两者之差即为建筑物高度．实验结果表明，利用RPC法从空间分辨率为0．61 m的QuickBird影像上提取的房高中误差为±0．57 m，而从分辨率为1．0 m的IKONOS影像上提取的房高中误差为±0．80 m，由此表明所提方法的总体精度在1个像元以内．
위료계산교통소구적건축용적솔，이용RPC모형직접종단폭고분변솔위성영상상제취건축물고도화층수신식．수선，재규정후적영상상량취건축물장각점적대지좌표，재영상좌표계중분별량취동일연수선상적장각점좌표화옥정점좌표．연후，장량측결과표준화，대입RPC모형，경질대운산득도장각점화옥정점적대지고，량자지차즉위건축물고도．실험결과표명，이용RPC법종공간분변솔위0．61 m적QuickBird영상상제취적방고중오차위±0．57 m，이종분변솔위1．0 m적IKONOS영상상제취적방고중오차위±0．80 m，유차표명소제방법적총체정도재1개상원이내．
In order to calculate the building volume rate of a traffic area, the height of a building and its number of floors are exacted directly from a single high resolution satellite image by using the RPC( rational polynomail cofficient) model.First, the geodetic coordinates of the basement corner point of the building are measured in the corrected image, while the image coordinates of the base-ment corner point and the roof corner point on the same plumb line are measured respectively.Then, the measured results are standardized.Finally, the geodetic heights of the basement corner point and the roof corner point of the building are obtained after iterative calculation in the RPC model, whose difference is the height of the building.The experimental results show that the RMSE ( root mean square errors) of the building height extracted using the RPC method from QuickBird image which has spatial resolution of 0.61 m is ±0.57 m, and that from the IKONOS image which has spatial resolution of 1.0 m is ±0.80 m, indicating that the overall accuracy of the RPC method is within 1 pixel.