Optimization method Optimization method mAP Test time (ms/image)
Weight initialization Gaussian distribution 0.8142 218
Xavier 0.8023 209
KaiMing 0.8169 211
COCO 0.8248 205
Backbone Resnet50 0.8275 195
Resnet101 0.8313 205
Resnetnet152 0.8166 210
Anchor scales {642,1282,2562} 0.8014 199
{1282,2562,5122} 0.7948 195
{642,1282,2562,5122} 0.8189 210
{322,642,1282,2562,5122} 0.8256 212
Loss function parameter αt = 0.5, λ = 0.5 0.7789 220
αt = 0.25, λ = 1.0 0.7856 212
αt = 0.25, λ = 2.0 0.8248 218
αt = 0.25, λ = 5.0 0.7985 210