Advanced contour reconnection in scanned topographic maps

Hancer E., SAMET R.

2011 5th International Conference on Application of Information and Communication Technologies, AICT 2011, Baku, Azerbaycan, 12 - 14 Ekim 2011 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/icaict.2011.6111025
  • Basıldığı Şehir: Baku
  • Basıldığı Ülke: Azerbaycan
  • Anahtar Kelimeler: contour lines, end points, gap filling, opposite and parabolic directions, reconnection, reconstruction, search masks, Topographic maps
  • Ankara Üniversitesi Adresli: Evet

Özet

This paper presents an advanced reconnection of contour lines extracted from scanned topographic maps. In other words, this paper refers to the problem of gap filling. New properties such as 1) controlling a search mask for even number end points, 2) using the parabolic directions, and 3) back tracing less than ten pixels are added to the classical semi-automatic method to improve performance and accuracy. Proposed method has been applied to many different maps and the results of two implementations are given in this paper. An analysis and comparison of obtained results show that proposed method improves run time and accuracy about 22-44% and 12-14%, respectively. © 2011 IEEE.