neural network for 3D pictures I'm wondering if they are some state-of-art algorithms to apply the convolutional neural network approach to 3D pictures, eg. input is no longer a grid of pixels, but voxels. My objective is to extract automatically features from 3D pictures and, cherry on the cake, perform supervised learning using 3D pictures as input data. Maybe others approach exist to extract features, but I would like to stay in the scope of machine learning approach (eg. don't want to use methods such as Fourier transform). Thanks in advance for your insights!
3D Shape Nets is published this year at CVPR (2015). You could access it here. This is a good way to use voxels as input to DNNs. There are also works applying DNNs to medical imaging such as this one and this one. I guess these would help you a lot.