NSD-SSD: A Novel Real-Time Ship Detector Based on Convolutional Neural Network in Surveillance Video

Table 2

Size of prior bounding boxes for different feature layers.

Feature layer	Min-size	Max-size
Conv4_3	30	60
FC7	60	111
Conv8_2	111	162
Conv9_2	162	213
Conv10_2	213	264
Conv11_2	264	315