Learning Good Features to Transfer Across Tasks and Domains

Availability of labelled data is the major obstacle to the deployment of deep learning algorithms for computer vision tasks in new domains. The fact that many frameworks adopted to solve different tasks share the same architecture suggests that there should be a way of reusing the knowledge learned in a specific setting to solve novel tasks with limited or no additional supervision. In this work, we first show that such knowledge can be shared across tasks by learning a mapping between task-specific deep features in a given domain. Then, we show that this mapping function, implemented by a neural network, is able to generalize to novel unseen domains. Besides, we propose a set of strategies to constrain the learned feature spaces, to ease learning and increase the generalization capability of the mapping network, thereby considerably improving the final performance of our framework. Our proposal obtains compelling results in challenging synthetic-to-real adaptation scenarios by transferring knowledge between monocular depth estimation and semantic segmentation tasks.

Automated summary

The availability of labelled data is a major obstacle for using deep learning algorithms in computer vision tasks in new domains. However, by learning a mapping between task-specific deep features and implementing it using a neural network, we can share knowledge across tasks and generalize to unseen domains. Additionally, we propose strategies to constrain the learned feature spaces, improving the learning process and the generalization capability of the mapping network.