The perceptual organization phenomenon in the cartography of topographic maps are analyzed and the significance and necessary of perceptual organization algorithms in interpretation of topographic maps is point out .
对地形图制图中的视觉组织现象进行分析,指出运用视觉组织算法进行地形图识别的意义及必要性,提出了基于视觉组织的虚线自动提取算法。