Mean Shift: A Robust Approach Toward Feature Space Analysis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Text/Graphics Separation in Maps
GREC '01 Selected Papers from the Fourth International Workshop on Graphics Recognition Algorithms and Applications
A System for Automatic Extraction of Road Network from Maps
INTSYS '98 Proceedings of the IEEE International Joint Symposia on Intelligence and Systems
Automatic extraction of road intersection position, connectivity, and orientations from raster maps
Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems
A Method for Automatically Extracting Road Layers from Raster Maps
ICDAR '09 Proceedings of the 2009 10th International Conference on Document Analysis and Recognition
Automatic palette identification of colored graphics
GREC'09 Proceedings of the 8th international conference on Graphics recognition: achievements, challenges, and evolution
Strabo: a system for extracting road vector data from raster maps
Proceedings of the 18th SIGSPATIAL International Conference on Advances in Geographic Information Systems
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Raster maps are an important source of road information. Because of the overlapping map features (e.g., roads and text labels) and the varying image quality, extracting road vector data from raster maps usually requires significant user input to achieve accurate results. In this paper, we present an accurate road vectorization technique that minimizes user input by combining our previous work on extracting road pixels and road-intersection templates to extract accurate road vector data from raster maps. Our approach enables GIS applications to exploit the road information in raster maps for the areas where the road vector data are otherwise not easily accessible, such as the countries of the Middle East. We show that our approach requires minimal user input and achieves an average of 93.2% completeness and 95.6% correctness in an experiment using raster maps from various sources.