Papers › Deep Diffeomorphic Transformer Networks
Deep Diffeomorphic Transformer Networks
Nicki Skafte Detlefsen, Oren Freifeld, Søren Hauberg
Spatial Transformer layers allow neural networks, at least in principle, to be invariant to large spatial transformations in image data. The model has, however, seen limited uptake as most practical implementations support only transformations that are too restricted, e.g. affine or homographic maps, and/or destructive maps, such as thin plate splines. We investigate the use of ï¬exible diffeomorphic image transformations within such networks and demonstrate that significant performance gains can be attained over currently-used models. The learned transformations are found to be both simple and intuitive, thereby providing insights into individual problem domains. With the proposed framework, a standard convolutional neural network matches state-of-the-art results on face veriï¬cation with only two extra lines of simple TensorFlow code.
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