Understanding Intra-Class Knowledge Inside CNN
Abstract
Convolutional Neural Network (CNN) has been successful in image recognition tasks, and recent works shed lights on how CNN separates different classes with the learned inter-class knowledge through visualization. In this work, we instead visualize the intra-class knowledge inside CNN to better understand how an object class is represented in the fully-connected layers. To invert the intra-class knowledge into more interpretable images, we propose a non-parametric patch prior upon previous CNN visualization models. With it, we show how different "styles" of templates for an object class are organized by CNN in terms of location and content, and represented in a hierarchical and ensemble way. Moreover, such intra-class knowledge can be used in many interesting applications, e.g. style-based image retrieval and style-based object completion.
Cite
@article{arxiv.1507.02379,
title = {Understanding Intra-Class Knowledge Inside CNN},
author = {Donglai Wei and Bolei Zhou and Antonio Torrabla and William Freeman},
journal= {arXiv preprint arXiv:1507.02379},
year = {2015}
}
Comments
tech report for: http://vision03.csail.mit.edu/cnn_art/index.html