Pixel Coverage Segmentation for Improved Feature Estimation

  • Nataša Sladoje
  • Joakim Lindblad
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5716)

Abstract

By utilizing intensity information available in images, partial coverage of pixels at object borders can be estimated. Such information can, in turn, provide more precise feature estimates. We present a pixel coverage segmentation method which assigns pixel values corresponding to the area of a pixel that is covered by the imaged object(s). Starting from any suitable crisp segmentation, we extract a one-pixel thin 4-connected boundary between the observed image components where a local linear mixture model is used for estimating fractional pixel coverage values. We evaluate the presented segmentation method, as well as its usefulness for subsequent precise feature estimation, on synthetic test objects with increasing levels of noise added. We conclude that for reasonable noise levels the presented method outperforms the achievable results of a perfect crisp segmentation. Finally, we illustrate the application of the suggested method on a real histological colour image.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Nataša Sladoje
    • 1
  • Joakim Lindblad
    • 2
  1. 1.Faculty of EngineeringUniversity of Novi SadSerbia
  2. 2.Centre for Image Analysis, SLUUppsalaSweden

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