We present a novel Convolutional Neural Network (CNN) based approach for one class classification. The idea is to use a zero centered Gaussian noise in the latent space as the pseudo-negative class and train the network using the cross-entropy loss to learn a good representation as well as the decision boundary for the given class. A key feature of the proposed approach is that any pre-trained CNN can be used as the base network for one class classification. The proposed One Class CNN (OC-CNN) is evaluated on the UMDAA-02 Face, Abnormality-1001, FounderType-200 datasets. These datasets are related to a variety of one class application problems such as user authentication, abnormality detection and novelty detection. Extensive experiments demonstrate that the proposed method achieves significant improvements over the recent state-of-the-art methods. The source code is available at : github.com/otkupjnoz/oc-cnn.

通过使用中心为零的高斯噪声作为伪负类，并使用交叉熵损失函数来训练网络，学习一个良好的表示以及给定类的决策边界，我们提出了一种基于卷积神经网络的新型一类分类方法。该方法的一个关键特点是任何预训练的卷积神经网络都可以用作一个类分类的基本网络，经过大量实验比较，该方法在一类应用问题（如用户身份验证、异常检测和新颖性检测）方面取得了显著的改进。

一类卷积神经网络