@Article{JICS-1-275,
author = {},
title = {Contour Line Extraction from Paper-based Topographic Maps},
journal = {Journal of Information and Computing Science},
year = {2024},
volume = {1},
number = {5},
pages = {275--283},
abstract = {Contour line is the main linear feature on topographic maps. Extraction of contour lines is tedious 
and  time-consuming  process,  and  is  still  an  interesting  problem.  A  novel  method  for  extraction  of  contour 
lines from paper-based topographic maps is presented in this paper. In our approach, we firstly segment color 
topographic  maps  for  achieving  the  binary  image  of  brown  color  contour  lines.  Then,  mathematic 
morphology method is used to filter the binary image. Next, Utilizing c-means algorithm to look for initial 
seed  point  on  thinning  contour  lines.  Fourthly,  utilizing  improved  active  contour  model  to  extract  non-
thinning  contour  lines.  Last,  we have  analyzed  the  directional  field  of  contour  lines near the  gap,  and  then 
reconnected  broken  contour lines.  The performance  of  the algorithm  is tested  on  several  topographic maps 
and comparing with other algorithms. 
},
issn = {1746-7659},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/jics/22827.html}
}