雷射掃描技術輔助三維戶地測量可行性之研究－－以建物為例

A Study on Applicability of Using Laser Scanning Technique for 3D Land Parcel Survey

本研究是應用三維雷射掃描技術對三維空間資訊豐富之建物進行戶地測量，以獲取建物之大量三維點雲坐標資料，經分析處理後組成建物模型，並利用3D坐標轉換模式將點雲測站坐標系統轉換至地籍圖坐標系統，以求取建物界址點來製作地籍圖，並與原地籍圖進行比較分析，檢視其符合規範精度後，再進行套疊建物模型，以形成三維立體地籍圖，方便爾後民眾能於電腦螢幕上瀏覽地籍圖，瞭解地界狀況，以減少土地紛爭與鑑界量。根據本文研究成果發現：（1）三維雷射掃描技術製作之地籍圖其界址點最大誤差不超過四公分，已符合地籍測量實施規則規定誤差限制（六公分以內）。（2）三維模型地籍圖，可於電腦螢幕上瀏覽，方便民眾閱覽，容易瞭解土地與空間位置之關係與狀況。 Abundant 3-D point cloud is collected after the use of 3-D scanner over the study area where the technology was introduced to perform land parcel survey. Those points were processed and analyzed to establish buildings model. The published cadastral coordinate system to make a simulative cadastre. Once the result after comparison and analysis between the simulative one and the original published cadastral map is corresponding to the regulations, a 3-D cadastre joined with stereo building model can hopefully be set up for browse to public. The 3-D model of cadastral information displayed on monitor not only clearly identifies the boundary situation but also the possible disputes between land owners and the cases of land parcel survey would decrease. From this study, it shows: that (1) the largest error was within 4 centimeter for boundary point, which is allowed by to the Regulation for Cadastral Survey. (2) 3-D cadastre can be browsed by the public for the convenience of reading and to build a clear realization over the land in practical situation.

Abundant 3-D point cloud is collected after the use of 3-D scanner over the study area where the technology was introduced to perform land parcel survey. Those points were processed and analyzed to establish buildings model. The published cadastral coordinate system to make a simulative cadastre. Once the result after comparison and analysis between the simulative one and the original published cadastral map is corresponding to the regulations, a 3-D cadastre joined with stereo building model can hopefully be set up for browse to public. The 3-D model of cadastral information displayed on monitor not only clearly identifies the boundary situation but also the possible disputes between land owners and the cases of land parcel survey would decrease. From this study, it shows: that (1) the largest error was within 4 centimeter for boundary point, which is allowed by to the Regulation for Cadastral Survey. (2) 3-D cadastre can be browsed by the public for the convenience of reading and to build a clear realization over the land in practical situation.