整合光達資料與二維路網重建三維道路模型

Fusion of LIDAR Data and Road Networks for the Reconstruction of 3D Road Models

陳良健(Liang-Chien Chen) ； 羅詔元(Chao-Yuan Lo)

《航測及遙測學刊》 12卷2期 (2007/06) Pp. 179-195

https://doi.org/10.6574/JPRS.2007.12(2).6

摘要

因應三維道路模型於空間資訊領域的重要性日益增加，本研究藉由整合光達資料與二維路網，自動重建三維道路模型。研究內容包含：初始模型建立、精確模型建立與模塑品質評估。初始模型部份，以二維路網位相關係與光達資料產生模型路面的初始高程。精確模型部份，本研究提出路網高程平差程序，進一步修正道路縱斷面豎曲線與路網連結處高程，產生精確道路模型。模塑品質評估部份，研究測試區包含單層與多層路網，成果以「點對模型」與「模型對模型」兩種方式進行驗證，最後再以坡度與坡度差檢核觀察模型與路面點雲間的空間分佈一致性。

關鍵字

道路模型 ； 重建 ； 光達資料 ； 二維路網

並列摘要

The 3D road modeling becomes an important task in the geoinformatic realm. The proposed scheme integrates LIDAR data and road networks to automatically reconstruct 3D road models. The whole process includes three parts: initial modeling, precise modeling, and validation. First, the elevation of the model surface is initially derived from LIDAR data. Then, the vertical alignment of each road segment is modified by line fitting. In the second part, the continuity in height, slope, and slope difference of 3D road models are fine-tuned with least squares adjustment. Finally, the validation is done to examine the consistency between point clouds and the generated model, the difference between the reference model and the generated model, and the rationality of the generated road profiles.

並列關鍵字

road modeling ； reconstruction ； LIDAR data ； road networks