[Grounding] Unsupervised textual grounding

Apr 3, 2018

https://arxiv.org/abs/1803.11185v1

Unsupervised Textual Grounding: Linking Words to Image Concepts

Raymond A. Yeh, Minh N. Do, Alexander G. Schwing

Textual grounding, i.e., linking words to objects in images, is a challenging but important task for robotics and human-computer interaction. Existing techniques benefit from recent progress in deep learning and generally formulate the task as a supervised learning problem, selecting a bounding box from a set of possible options. To train these deep net based approaches, access to a large-scale datasets is required, however, constructing such a dataset is time-consuming and expensive. Therefore, we develop a completely unsupervised mechanism for textual grounding using hypothesis testing as a mechanism to link words to detected image concepts. We demonstrate our approach on the ReferIt Game dataset and the Flickr30k data, outperforming baselines by 7.98% and 6.96% respectively.

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