Title: Making Sense of Vision and Touch: Self-Supervised Learning of Multimodal Representations for Contact-Rich Tasks,
Abstract: Contact-rich manipulation tasks in unstructured environments often require
both haptic and visual feedback. However, it is non-trivial to manually design
a robot controller that combines modalities with very different
characteristics. While deep reinforcement learning has shown success in
learning control policies for high-dimensional inputs, these algorithms are
generally intractable to deploy on real robots due to sample complexity. We use
self-supervision to learn a compact and multimodal representation of our
sensory inputs, which can then be used to improve the sample efficiency of our
policy learning. We evaluate our method on a peg insertion task, generalizing
over different geometry, configurations, and clearances, while being robust to
external perturbations. Results for simulated and real robot experiments are
presented.