Search Results for author: Alexander Freytag

Found 10 papers, 1 papers with code

Active and Continuous Exploration with Deep Neural Networks and Expected Model Output Changes

no code implementations19 Dec 2016 Christoph Käding, Erik Rodner, Alexander Freytag, Joachim Denzler

The demands on visual recognition systems do not end with the complexity offered by current large-scale image datasets, such as ImageNet.

Active Learning

Active Learning and Discovery of Object Categories in the Presence of Unnameable Instances

no code implementations CVPR 2015 Christoph Kading, Alexander Freytag, Erik Rodner, Paul Bodesheim, Joachim Denzler

In active learning, all categories occurring in collected data are usually assumed to be known in advance and experts should be able to label every requested instance.

Active Learning

Fine-grained Categorization -- Short Summary of our Entry for the ImageNet Challenge 2012

no code implementations17 Oct 2013 Christoph Göring, Alexander Freytag, Erik Rodner, Joachim Denzler

In this paper, we tackle the problem of visual categorization of dog breeds, which is a surprisingly challenging task due to simultaneously present low interclass distances and high intra-class variances.

Kernel Null Space Methods for Novelty Detection

no code implementations CVPR 2013 Paul Bodesheim, Alexander Freytag, Erik Rodner, Michael Kemmler, Joachim Denzler

In contrast to modeling the support of each known class individually, our approach makes use of a projection in a joint subspace where training samples of all known classes have zero intra-class variance.

Density Estimation Novelty Detection +1

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