According to conventional thinking to the group convolution convolution.
Conventional convolution:
If the size of the input feature map C * H * WC * H * WC * H * W, N NN convolution kernel has a same number of output feature map convolution kernel is N NN, each convolution kernel of size C * K * KC * K * KC * K * K, N NN orders of General Staff convolution kernel is N * C * K * KN * C * K * KN * C * K * K, the input and output of the map of the map connection as shown in FIG.
Group convolution:
