地籍圖掃瞄數化位置精度評估之研究

A Study on Positional Accuracy Assessment of Scanned Cadastral Maps

傅桂霖(Gui-Lin Fu) ； 蔡榮得(Victor J. D. Tsai)

《地籍測量：中華民國地籍測量學會會刊》 21卷1期 (2002/03) Pp. 28-38

https://doi.org/10.29609/YYWYLL.200203.0002

摘要

地籍圖是地政單位業務中的一項重要的基本資料，在國土資訊系統九大資料庫中以地籍圖之精度要求最高，然而舊圖因使用較久而皺折及破損嚴重，因此，數值化地籍圖之建置與供應，實為國土資訊系統保存圖籍資料之首要工作。本論文針對目前各界較常用之原圖掃瞄影像之地籍圖數化作業過程，探討其可能之誤差來源，以誤差傳播原理雅導地籍圖掃瞄數化之精度，並評估地籍圖本身皺折變形情形之影響。研究之實驗成果可提供從事地籍數化之工作者及終端使用者量化的誤差分析數據，作為其後續運用時的細部考量、評估、與決策的重要考慮因素。

關鍵字

地籍圖 ； 掃瞄數化 ； 誤差分析

並列摘要

Cadastral maps play dominant roles in land administration as their accuracy requirement is the highest among the nine databases in the National Geographical Information Systems (NGIS). However, old cadastral maps usually get wrinkled and destroyed for their frequent uses in early era. Thus, the establishment and supply of digital cadastral data are the most primary work for preserving cadastral maps in NGIS. This paper examines possible sources of error in the processes of transferring hardcopy cadastral maps into digital cadastral data via scanning in order to deduct the accuracy of the products based on error propagation principles. Meanwhile, the influence of using wrinkled cadastral maps was also evaluated. Empirical results of this paper should provide quantified information about errors for workers and end-users digital cadastral data for their first consideration in the application, evaluation and decision-making in using these data.

並列關鍵字

Cadastral maps ； Scanning ； Error Analysis