An improved detecting information model of point annotation labelling in cartography
HU Fengwei, QIAO Junjun, CHEN Zhangjian, GONG Lifang, LI Aiqin
Acta Geodaetica et Cartographica Sinica . 2021, (1): 132 -141 .  DOI: 10.11947/j.AGCS.2021.20200018