Motivation

Safe robot behavior requires more than obstacle avoidance. It requires understanding: 

  • what is in the scene
  • what relationships matter 
  • what the current context implies for action

Does not depend only on the ROBOT!

The same action can be safe in one context but unsafe in another:

  • moving a robot arm fast in free space vs. fast near a human hand
  • pouring water into a cup vs. pouring near a keyboard or power outlet

Some safety constraints depend on object properties and hidden state:

  • lifting a rigid closed box vs. lifting an open or deformable container with contents in it

Why not rely on scale alone?

  • Long-tail failures: rare data 
  • No guarantee at execution time

Proposed Safety Taxonomy