An error model of circular curve features in GIS

Authors:
Xiaohua Tong;Wenzhong Shi;Dajie Liu
Affiliations:
Tongji University, Shanghai, China;The Hong Kong Polytechnic University, Kowloon, Hong Kong;Tongji University, Shanghai, China
Venue:
GIS '03 Proceedings of the 11th ACM international symposium on Advances in geographic information systems
Year:
2003

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Georeferencing locality descriptions and computing associated uncertainty using a probabilistic approach

International Journal of Geographical Information Science - Digital Gazetteer Research

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Abstract

In this paper, a new error model to describe circular curve features in GIS is presented. In the model, the error of a circular curve feature can be described by two methods. In the first method, the error is described by the root mean square error in the normal direction of the circular curve. In the second method, the error is indicated by the maximum distance between the curve feature and the error ellipse. The two methods are tested through case studies, and the results are analyzed.