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Phase-Based User-Steered Image Segmentation

  • Lauren O’Donnell
  • Carl-Fredrik Westin
  • W. Eric L. Grimson
  • Juan Ruiz-Alzola
  • Martha E. Shenton
  • Ron Kikinis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2208)

Abstract

This paper presents a user-steered segmentation algorithm based on the livewire paradigm. Livewire is an image-feature driven method that finds the optimal path between user-selected image locations, thus reducing the need to manually define the complete boundary. We introduce an image feature based on local phase, which describes local edge symmetry independent of absolute gray value. Because phase is amplitude invariant, the measurements are robust with respect to smooth variations, such as bias field inhomogeneities present in all MR images. In order to enable validation of our segmentation method, we have created a system that continuously records user interaction and automatically generates a database containing the number of user interactions, such as mouse events, and time stamps from various editing modules. We have conducted validation trials of the system and obtained expert opinions regarding its functionality.

Keywords

Segmentation Method User Interaction Instantaneous Frequency Weighted Graph Manual Segmentation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Lauren O’Donnell
    • 1
  • Carl-Fredrik Westin
    • 1
    • 2
  • W. Eric L. Grimson
    • 1
  • Juan Ruiz-Alzola
    • 3
  • Martha E. Shenton
    • 2
  • Ron Kikinis
    • 2
  1. 1.MIT AI LaboratoryCambridgeUSA
  2. 2.Brigham and Women’s HospitalHarvard Medical SchoolUSA
  3. 3.Dept. of Signals and CommunicationsUniversity of Las Palmas de Gran CanariaSpain

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