Building a large image dataset with high-quality object masks for semantic segmentation is costly and time consuming. In this paper, we reduce the data preparation cost by leveraging weak supervision in the form of object bounding boxes. To accomplish this, we propose a principled framework that trains a deep convolutional segmentation model that combines a large set of weakly supervised images (having only object bounding box labels) with a small set of fully supervised images (having semantic segmentation labels and box labels). Our framework trains the primary segmentation model with the aid of an ancillary model that generates initial segmentation labels for the weakly supervised instances and a self-correction module that improves the generated labels during training using the increasingly accurate primary model. We introduce two variants of the self-correction module using either linear or convolutional functions. Experiments on the PASCAL VOC 2012 and Cityscape datasets show that our models trained with a small fully supervised set perform similar to, or better than, models trained with a large fully supervised set while requiring ~7x less annotation effort.

本研究介绍了一种半监督框架，通过一个辅助模型和一个自我纠正模块，在只有一小部分完全有监督图像的基础上，使用具有目标边界框标签的图像和只有目标边界框标签的图像集（称为弱集），训练出高质量的语义分割模型，这种方法比传统大量完全有监督数据模型要求的标注工作量减少 ~7 倍。

半监督自修正语义图像分割网络