Simulation of Ground-Truth Validation Data Via Physically- and Statistically-Based Warps

  • Authors:
  • Ghassan Hamarneh;Preet Jassi;Lisa Tang

  • Affiliations:
  • Medical Image Analysis Lab., Simon Fraser University, Burnaby, Canada V5A 1S6;Medical Image Analysis Lab., Simon Fraser University, Burnaby, Canada V5A 1S6;Medical Image Analysis Lab., Simon Fraser University, Burnaby, Canada V5A 1S6

  • Venue:
  • MICCAI '08 Proceedings of the 11th international conference on Medical Image Computing and Computer-Assisted Intervention - Part I
  • Year:
  • 2008

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Abstract

The problem of scarcity of ground-truth expert delineations of medical image data is a serious one that impedes the training and validation of medical image analysis techniques. We develop an algorithm for the automatic generation of large databases of annotated images from a single reference dataset. We provide a web-based interface through which the users can upload a reference data set (an image and its corresponding segmentation and landmark points), provide custom setting of parameters, and, following server-side computations, generate and download an arbitrary number of novel ground-truth data, including segmentations, displacement vector fields, intensity non-uniformity maps, and point correspondences. To produce realistic simulated data, we use variational (statistically-based) and vibrational (physically-based) spatial deformations, nonlinear radiometric warps mimicking imaging non-homogeneity, and additive random noise with different underlying distributions. We outline the algorithmic details, present sample results, and provide the web address to readers for immediate evaluation and usage.