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["images","points","matches","Base","Map","BTree"]
[10,5000,1250,{"v":6.8e-05,"d":"6.80E-05"},0.000909,0.032572]
[20,10000,5000,1.85E-4,0.003468,0.091209,null,null,"Timing done on Oct 26, 2013, by Frank, on 3.06GHz Intel Core i3"]
[30,15000,11250,0.000497,0.010806,0.279008]
[40,20000,20000,1.358E-3,0.034243,0.575306]
[50,25000,31250,1.866E-3,0.054209,0.937282]
[100,50000,125000,0.01063,0.319107,4.7954]
[200,100000,500000,0.034276,1.17656,20.3224]
[300,150000,1125000,0.080089,2.98121,45.9018]
[400,200000,2000000,0.120456,5.3121,78.4166]
[500,250000,3125000,0.172458,7.93586,118.404]