Research Article

Cross Product and Partitioned Filtering-Based Graham Convex Hull for Buoy Drifting Area Demarcating

Table 2

Time cost of different algorithms (s).

Number of pointsBuoyGraham scanImproved Graham scan

17413#7.4806460.974504
712012#7.4890850.989793
79058#8.4341501.646129
148754#8.5975241.721608
1584622#8.9841711.826584
1630421#9.1325682.113338