以坐標向量修正法改善圖解地籍圖數化面積與登記面積不符之研究

Using Coordinate Vector Correction Method to Reduce the Differences between the Digitized Graphic Areas and the Registered Areas of Cadastral Map

甯方璽(Fang-Shii Ning) ； 涂振邦(Chen-Pang Tu)

《中正嶺學報》 44卷1期 (2015/05) Pp. 113-121

摘要

地籍圖系統之圖籍與資料因為施測之年代較久遠、儀器精度不高，且因圖紙保存的問題，造成圖面上的面積往往與登記的面積相差甚大，地籍圖重測為解決此問題的方法，但是採用此種方式處理所需消耗的資源相當龐大，若能在數化的成果中對於相關的數據做處理，使其面積的差異能夠縮小以符合相關規範，減少需要地籍圖重測的數量，應是一個理想的解決方法，坐標向量修正法（Coordinate Vector Correction Method, CVCM）便是在這種思維下產生的運算法。本研究選定新北市、台中市以及台南市共十個區域，在將坐標系統利用六參數轉換至TWD97系統後利用坐標向量修正法對各界址點坐標進行修正，並將成果與原六參數轉換成果以及六參數轉換後加入附加面積約制條件成果進行比較與分析。由研究成果顯示，使用六參數轉換後，再利用坐標向量修正法將轉換面積與登記面積之均方根值比較，平均降低約38%；而各宗地面積超出最大允許誤差的數量平均減少約24%。

關鍵字

坐標轉換 ； 圖解區 ； 坐標向量修正法

並列摘要

Aged map, surveying techniques, equipment, conservation method of map and coordinates system causes large differences between mapped area and registered area in cadastral survey. Re-survey is a way to solve this problem, but re-survey itself costs money and time. The ideal way is to narrowthe differences of area between mapped and registered to meet the related specification by just dealing with digitized cadastral map data. The Coordinate Vector Correction Method(CVCM) comes out under the motivation for dealing with digitized data. In this research, 10 experimental areas chose from the New Taipei City, Taichung City and Tainan City. All coordinates transferred to TWD97 datum by using affine transformation, and then adjusted them through CVCM. The analysis processed the data with CVCM, without CVCM and adding area-constraint. Results showedthe differences root mean squareimproved 38%comparing with area-constraint data. And areas of land parcels exceed the criteria of regulations roughly reduced 24%.

並列關鍵字

Coordinate Transformation ； thegraphic areas ； Coordinate Vector Correction Method