Multi-scale Representation of Digital Depth Model Based on Double Direction Rolling Ball Transform according to the Reality Principle
DONG Jian, PENG Rencan, ZHANG Lihua, LIU Guohui, ZHU Qiang
Acta Geodaetica et Cartographica Sinica . 2017, (6): 789 -801 .  DOI: 10.11947/j.AGCS.2017.20160558