A Method of Distance Measurement for Corresponding Linear Feature

In view of the current distance measurement methods in expressing the spatial location differences accuracy and deficiency of corresponding linear feature, this paper proposes a method of distance measurement for corresponding linear feature. The method combines the advantages of both hausdorff distance and fréchet distance. Firstly, the corresponding point of vertexes were interpolated into the corresponding linear. Secondly, the gross error points were eliminated by the use of first order differential and fixed it by the use of median point. Thirdly, the minimum Euclidean distance between vertexe and corresponding point was computed for every point in corresponding linear. Finally, the average of the minimum Euclidean distance was regarded as distance of corresponding linear. In order to verify the validity of the method, this paper proposes two index of evaluation. One is average amplitude (F) for the stability of measurement, and the other is accuracy rate (R) for the accuracy of measurement. Contrast test of 4 distance measurement methods illustrated that the results of test are in accord with the characteristics of human cognition approximately.