Semantic segmentation aims to classify every pixel of an input image. Considering the difficulty of acquiring dense labels, researchers have recently been resorting to weak labels to alleviate the annotation burden of segmentation. However, existing works mainly concentrate on expanding the seed of pseudo labels within the image's salient region. In this work, we propose a non-salient region object mining approach for weakly supervised semantic segmentation. We introduce a graph-based global reasoning unit to strengthen the classification network's ability to capture global relations among disjoint and distant regions. This helps the network activate the object features outside the salient area. To further mine the non-salient region objects, we propose to exert the segmentation network's self-correction ability. Specifically, a potential object mining module is proposed to reduce the false-negative rate in pseudo labels. Moreover, we propose a non-salient region masking module for complex images to generate masked pseudo labels. Our non-salient region masking module helps further discover the objects in the non-salient region. Extensive experiments on the PASCAL VOC dataset demonstrate state-of-the-art results compared to current methods.

本文提出一种基于对象挖掘的弱监督语义分割方法，该方法采用图形全局推理单元和自我修正机制，可以在非显著区域激活对象特征，进一步挖掘非显著区域的对象，并通过使用假标签的潜在对象挖掘模块减少虚假负面率。实验结果表明，在PASCAL VOC数据集上与当前方法相比有最先进的效果。

基于弱监督语义分割的非显著区域对象挖掘