ScribbleSup: Scribble-Supervised Convolutional Networks for Semantic Segmentation
This reduces annotation effort for semantic segmentation tasks, though it is incremental as it builds on existing interactive segmentation methods.
The paper tackles the problem of tedious per-pixel annotation for semantic segmentation by using scribbles as supervision, achieving competitive results on PASCAL VOC and excellent results on PASCAL-CONTEXT with extra scribble annotations.
Large-scale data is of crucial importance for learning semantic segmentation models, but annotating per-pixel masks is a tedious and inefficient procedure. We note that for the topic of interactive image segmentation, scribbles are very widely used in academic research and commercial software, and are recognized as one of the most user-friendly ways of interacting. In this paper, we propose to use scribbles to annotate images, and develop an algorithm to train convolutional networks for semantic segmentation supervised by scribbles. Our algorithm is based on a graphical model that jointly propagates information from scribbles to unmarked pixels and learns network parameters. We present competitive object semantic segmentation results on the PASCAL VOC dataset by using scribbles as annotations. Scribbles are also favored for annotating stuff (e.g., water, sky, grass) that has no well-defined shape, and our method shows excellent results on the PASCAL-CONTEXT dataset thanks to extra inexpensive scribble annotations. Our scribble annotations on PASCAL VOC are available at http://research.microsoft.com/en-us/um/people/jifdai/downloads/scribble_sup