Fast, Accurate, and Reproducible Live-Wire Boundary Extraction

We present an interactive tool for efficient, accurate, and reproducible boundary extraction which requires minimal user input with a mouse. Optimal boundaries are computed and selected at interactive rates as the user moves the mouse starting from a user-selected seed point. When the mouse position comes in proximity to an object edge, a “live-wire” boundary snaps to, and wraps around the object of interest. Input of a new seed point “freezes” the selected boundary segment, and the process is repeated until the boundary is complete. Data-driven boundary cooling generates seed points automatically and further reduces user input. On-the-fly training adapts the dynamic boundary to edges of current interest.