Unsupervised feature learning by augmenting single images Unsupervised feature learning by augmenting single images
Paper summary The paper presents an approach for learning the filters of a convolutional NN, for an image classification task, without making use of target labels. The algorithm proceeds in two steps: learning a transformation of the original image and then learning a classifier using this new representation. For the first step, patches are sampled from an image collection, each patch will then correspond to a surrogate class and a classifier will be trained to associate transformed versions of the patches to the corresponding class labels using a convolutional net. In a second step, this net is replicated on whole images leading to a transformed representation of the original image. A linear classifier is then trained using this representation as input and the target labels relative to the image collection. Experiments are performed on different image collections and a comparison with several baselines is provided.
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Unsupervised feature learning by augmenting single images
Dosovitskiy, Alexey and Springenberg, Jost Tobias and Brox, Thomas
arXiv e-Print archive - 2013 via Bibsonomy
Keywords: dblp


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