convolutional layers. In addition to the convolutional layers, we attached 6 detection heads: * The first detection head is attached to the last conv4_x layer. * The other five detection heads are attached to the corresponding 5 additional layers.
       </p>
       <p>
        Detector heads are similar to the ones referenced in the paper, however, they are enhanced by additional BatchNorm layers after each convolution.
       </p>
       <p>
        More information about this SSD model is available at Nv