Adversarial Learning of General Transformations for Data Augmentation

Mar 20, 2019 ICLR 2019 Workshop LLD Blind Submission readers: everyone
  • Keywords: GAN, Data Augmentation, Image Classification
  • TL;DR: Automatic Learning of data augmentation using a GAN based architecture to improve an image classifier
  • Abstract: Data augmentation (DA) is fundamental against overfitting in large convolutional neural networks, especially with a limited training dataset. In images, DA is usually based on heuristic transformations, like geometric or color transformations. Instead of using predefined transformations, our work learns data augmentation directly from the training data by learning to transform images with an encoder-decoder architecture combined with a spatial transformer network. The transformed images still belong to the same class, but are new, more complex samples for the classifier. Our experiments show that our approach is better than previous generative data augmentation methods, and comparable to predefined transformation methods when training an image classifier.
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