Abstract

Convolutional neural networks (CNN) have recently shown
outstanding image classification performance in the largescale
visual recognition challenge (ILSVRC2012). The success
of CNNs is attributed to their ability to learn rich midlevel
image representations as opposed to hand-designed
low-level features used in other image classification methods.
Learning CNNs, however, amounts to estimating millions
of parameters and requires a very large number of
annotated image samples. This property currently prevents
application of CNNs to problems with limited training data.
In this work we show how image representations learned
with CNNs on large-scale annotated datasets can be efficiently
transferred to other visual recognition tasks with
limited amount of training data. We design a method to
reuse layers trained on the ImageNet dataset to compute
mid-level image representation for images in the PASCAL
VOC dataset. We show that despite differences in image
statistics and tasks in the two datasets, the transferred representation
leads to significantly improved results for object
and action classification, outperforming the current state of
the art on Pascal VOC 2007 and 2012 datasets. We also
show promising results for object and action localization.

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