Aiming to eliminating the spatial inconsistency between the input features and reference ones

this paper proposed a method to snap input lines to reference ones based on densifying input lines. The algorithm consists of three steps: inserting auxiliary nodes

snapping nodes

and reordering snapped nodes. Inserted nodes partition input lines make it possible to accurately snap segments to reference lines. The extra adjusting step reorders the snapped nodes and thus eliminates the self-intersections on input lines. Experimental results showed that the snapped line by the new method coincided completely with the referred one in tolerance distance

and no self-intersections were found on the rectified lines

better than the results by ArcGIS software. The results proved the effectiveness of inserting auxiliary nodes and reordering the snapped nodes in this algorithm.