Table 1.

Network parameters of the 3DMM-VggNet. Building blocks are shown in brackets with the numbers of blocks stacked. Downsampling is done using the max pooling. The stride size of the convolution operation is one. The symbol “*” indicates that there is no such operation

Layer name	SubNet-S	SubNet-M	SubNet-L
Input size	16 × 16 × 16 × 2	32 × 32 × 32 × 2	48 × 48 × 48 × 2
3D-ConvBlock1	[3 × 3 × 3, 64] × 2	[3 × 3 × 3, 64] × 2	[3 × 3 × 3, 64] × 2
3D-ConvBlock2	[3 × 3 × 3, 64] × 2	[3 × 3 × 3, 128] × 2	[3 × 3 × 3, 128] × 2
3D-ConvBlock3	*	[3 × 3 × 3, 128] × 2	[3 × 3 × 3, 128] × 2
FC	150	200	250
Output size	8 × 8 × 8	8 × 8 × 8	12 × 12 × 12
Nodule probability	2-d FC, softmax