3 Scopus citations

Abstract

In this paper, we describe a pixel based approach for automated segmentation of tumor components from MR images. Sparse coding with data-adapted dictionaries has been successfully employed in several image recovery and vision problems. Since it is trivial to obtain sparse codes for pixel values, we propose to consider their non-linear similarities to perform kernel sparse coding in a high dimensional feature space. We develop the kernel K-lines clustering procedure for inferring kernel dictionaries and use the kernel sparse codes to determine if a pixel belongs to a tumorous region. By incorporating spatial locality information of the pixels, contiguous tumor regions can be efficiently identified. A low complexity segmentation approach, which allows the user to initialize the tumor region, is also presented. Results show that both of the proposed approaches lead to accurate tumor identification with a low false positive rate, when compared to manual segmentation by an expert.

Original languageEnglish (US)
Title of host publicationIEEE 12th International Conference on BioInformatics and BioEngineering, BIBE 2012
Pages401-406
Number of pages6
DOIs
StatePublished - Dec 1 2012
Event12th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2012 - Larnaca, Cyprus
Duration: Nov 11 2012Nov 13 2012

Publication series

NameIEEE 12th International Conference on BioInformatics and BioEngineering, BIBE 2012

Other

Other12th IEEE International Conference on BioInformatics and BioEngineering, BIBE 2012
CountryCyprus
CityLarnaca
Period11/11/1211/13/12

Keywords

  • MRI
  • kernel methods
  • sparse representations
  • tumor segmentation

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering

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    Thiagarajan, J. J., Rajan, D., Ramamurthy, K. N., Frakes, D., & Spanias, A. (2012). Automated tumor segmentation using kernel sparse representations. In IEEE 12th International Conference on BioInformatics and BioEngineering, BIBE 2012 (pp. 401-406). [6399658] (IEEE 12th International Conference on BioInformatics and BioEngineering, BIBE 2012). https://doi.org/10.1109/BIBE.2012.6399658