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PubMed · 9873914

Interactive live-wire boundary extraction.

W A Barrett·E N Mortensen
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Abstract

Live-wire segmentation is a new 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 manually specified seed point. When the mouse position comes into the proximity of an object edge, a 'live-wire' boundary snaps to, and wraps around the object of interest. The input of a new seed point 'freezes' the selected boundary segment and the process is repeated until the boundary is complete. Two novel enhancements to the basic live-wire methodology include boundary cooling and on-the-fly training. 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. Using the live-wire technique, boundaries are extracted in one-fifth of the time required for manual tracing, but with 4.4 times greater accuracy and 4.8 times greater reproducibility. In particular, interobserver reproducibility using the live-wire tool is 3.8 times greater than intraobserver reproducibility using manual tracing.

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BrainComputer SimulationCoronary VesselsHeart VentriclesHumansLegMagnetic Resonance ImagingObserver VariationReproducibility of ResultsSpineUser-Computer InterfaceComparative StudyJournal Article

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BibTeXRIS

W A Barrett, E N Mortensen. 1997. Interactive live-wire boundary extraction.. https://doi.org/10.1016/s1361-8415(97)85005-0

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