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DEVELOPMENT OF 3D HIGHWAY VISUALIZATION MODEL USING STEREO IKONOS SATELLITE IMAGERY

机译:基于立体IKONOS卫星影像的3D公路可视化模型的开发

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The study aims to investigate the use of stereo high resolution satellite imagery for constructingaccurate three-dimensional (3D) highway visualization model. A stereo-pair from IKONOS satelliteimages (1 m resolution) are geo-referenced by using a polynomial-based generic pushbroom model usinga number of tie points and Ground Control Points (GCP) acquired by Global Positioning System (GPS)measurements. Using digital imagery for the City of Hong Kong, highway alignments are extracted semiautomaticallyusing stereoscopic measurements and a 3D digital model along the highway is constructed.To assess the accuracy of the information extracted from the stereo IKONOS, the same highwayalignments are extracted from stereo aerial images (12.5 μm resolution) for comparative analysis. It isfound that the highway alignments retrieved from the stereo IKONOS images result in less than 0.8mRoot Mean Squared (RMS) error in the horizontal and vertical directions for loop and direct ramps of aninterchange. With the competitive meter-level accuracy, stereo satellite images proved to be a viablealternative for constructing digital 3D highway models.
机译:该研究旨在调查使用立体声高分辨率卫星图像进行构造的情况。 精确的三维(3D)公路可视化模型。 IKONOS卫星的立体声对 通过使用基于多项式的通用pushbroom模型对图像(1 m分辨率)进行地理参考 全球定位系统(GPS)获得的多个联络点和地面控制点(GCP) 测量。使用香港市的数字图像,可以自动提取高速公路路线 使用立体测量和沿高速公路的3D数字模型进行了构建。 为了评估从同一高速公路上的立体IKONOS提取的信息的准确性 从立体航拍图像(分辨率为12.5μm)中提取对准,以进行比较分析。它是 发现从立体IKONOS图像检索的高速公路路线小于0.8m 环路和直接斜坡的水平和垂直方向的均方根(RMS)误差 互换。凭借具有竞争力的仪表级精度,立体声卫星图像被证明是可行的 构建数字3D公路模型的替代方法。

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