Perceptual grouping for symbol chain tracking in digitized topographic maps.

Paolo Gamba Alessandro Mecocci Perceptual grouping for symbol chain tracking in digitized topographic maps. 355-365 1999 20 Pattern Recognition Letters 4 http://dx.doi.org/10.1016/S0167-8655(99)00003-3 db/journals/prl/prl20.html#GambaM99