Study on Chain Code Methods for Triangular Grids
WEI Xiaofeng, GENG Zexun, PU Guoliang, WANG Deyong
Acta Scientiarum Naturalium Universitatis Pekinensis . 2019, (6): 1014 -1020 .  DOI: 10.13209/j.0479-8023.2019.116