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arXiv · 2112.00725

The Augmented Image Prior: Distilling 1000 Classes by Extrapolating from a Single Image

Yuki M. Asano·Aaqib Saeed
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Abstract

What can neural networks learn about the visual world when provided with only a single image as input? While any image obviously cannot contain the multitudes of all existing objects, scenes and lighting conditions - within the space of all 256^(3x224x224) possible 224-sized square images, it might still provide a strong prior for natural images. To analyze this `augmented image prior' hypothesis, we develop a simple framework for training neural networks from scratch using a single image and augmentations using knowledge distillation from a supervised pretrained teacher. With this, we find the answer to the above question to be: `surprisingly, a lot'. In quantitative terms, we find accuracies of 94%/74% on CIFAR-10/100, 69% on ImageNet, and by extending this method to video and audio, 51% on Kinetics-400 and 84% on SpeechCommands. In extensive analyses spanning 13 datasets, we disentangle the effect of augmentations, choice of data and network architectures and also provide qualitative evaluations that include lucid `panda neurons' in networks that have never even seen one.

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Yuki M. Asano, Aaqib Saeed. 2021-12-01. The Augmented Image Prior: Distilling 1000 Classes by Extrapolating from a Single Image. https://arxiv.org/abs/2112.00725

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