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Poster
BinGAN: Learning Compact Binary Descriptors with a Regularized GAN
Maciej Zieba · Piotr Semberecki · Tarek El-Gaaly · Tomasz Trzcinski

Tue Dec 04 02:00 PM -- 04:00 PM (PST) @ Room 210 #39

In this paper, we propose a novel regularization method for Generative Adversarial Networks that allows the model to learn discriminative yet compact binary representations of image patches (image descriptors). We exploit the dimensionality reduction that takes place in the intermediate layers of the discriminator network and train the binarized penultimate layer's low-dimensional representation to mimic the distribution of the higher-dimensional preceding layers. To achieve this, we introduce two loss terms that aim at: (i) reducing the correlation between the dimensions of the binarized penultimate layer's low-dimensional representation (i.e. maximizing joint entropy) and (ii) propagating the relations between the dimensions in the high-dimensional space to the low-dimensional space. We evaluate the resulting binary image descriptors on two challenging applications, image matching and retrieval, where they achieve state-of-the-art results.

Author Information

Maciej Zieba (Wroclaw University of Science and Technology, Tooploox)
Piotr Semberecki (Wrocław University of Science and Technology, Tooploox)
Tarek El-Gaaly (Voyage)
Tomasz Trzcinski (Tooploox / Warsaw University of Technology)

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