Object detection is a challenging task in visual understanding domain, and even more so if the supervision is to be weak. Recently, few efforts to handle the task without expensive human annotations is established by promising deep neural network. A new architecture of cascaded networks is proposed to learn a convolutional neural network (CNN) under such conditions. We introduce two such architectures, with either two cascade stages or three which are trained in an end-to-end pipeline. The first stage of both architectures extracts best candidate of class specific region proposals by training a fully convolutional network. In the case of the three stage architecture, the middle stage provides object segmentation, using the output of the activation maps of first stage. The final stage of both architectures is a part of a convolutional neural network that performs multiple instance learning on proposals extracted in the previous stage(s). Our experiments on the PASCAL VOC 2007, 2010, 2012 and large scale object datasets, ILSVRC 2013, 2014 datasets show improvements in the areas of weakly-supervised object detection, classification and localization.

本研究提出了基于级联卷积神经网络的两种体系结构，旨在解决在没有昂贵人工注释下进行的弱监督下的目标检测问题，第一阶段从全卷积神经网络中提取类特定区域提议的最佳候选项，在三阶段体系结构中，中间阶段通过第一阶段的激活映射来提供物体分割。这些体系结构在弱监督目标检测，分类和定位领域的实验中表现出了改进。

弱监督级联卷积网络