Advertisement

Homogeneity of Pixel Neighborhoods in Gray Level Images Investigated by the Grade Correspondence Analysis

  • Maria Grzegorek
Part of the Advances in Soft Computing book series (AINSC, volume 45)

Abstract

The paper presents some interesting properties of Grade Correspondence Analysis (GCA) used to order the pixels of gray level images described by their gray level (gl), gradient module (gm) and a family of variables dealing with pixel neighborhoods. The gm stripcharts for pixels ordered according to GCA are used to separate and then order subsets of pixels with identical descriptions of their gm neighborhoods. The spatial structure of clusters formed from subsets of adjacent clusters is then restored and used to discover compact areas of pixels with similar gm neighborhoods. Such a decomposition is performed for a MR image of a fragment of human brain. Two similar homogeneous compact areas discovered in this image suggest that the proposed method might be useful in medical classification and identification.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Kowalczyk T, Pleszczyńska E, Ruland F (eds) (2004) Grade Models and Methods for Data Analysis, With Applications for the Analysis of Data Populations, Series: Studies in Fuzziness and Soft Computing, vol. 151, 477 p., Springer Verlag, Berlin Heidelberg New YorkGoogle Scholar
  2. 2.
    http://gradestat.ipipan.waw.pl/Google Scholar
  3. 3.
    Ksąażyk J, Matyja O, Pleszczyńska E, Wiech M. (eds) (2005) Analysis of medical and demographical data aided by programme GradeStat. Institute of Computer Science PAS, the Children’s Memorial Health Institute (in Polish)Google Scholar
  4. 4.
    Pleszczyńska E (2007) Application of grade methods to medical data: new examples. Biocybernetics and Biomedical Engineering, No. 3Google Scholar
  5. 5.
    Grzegorek M (2005) Image Decomposition by Grade Analysis-an Illustration. In: Kurzyński M, Puchała E, Woźniak M, Żolnierek A (eds) Computer Recognition Systems. Proceedings of the 4th International Conference on Computer Recognition Systems CORES’05, May 22–25, Rydzyna Castle. Series: Advances in Soft Computing. Springer Verlag: Berlin Heidelberg New York, pp 387–394Google Scholar
  6. 6.
    Grzegorek M (2005) Decomposition of the fragment of brain image performed using grade data methods with the aid of GradeStat program. In: Rutkowski L (ed.), Proc. of XIVth Scientific Conference“Biocybernetics and Biomedical Engineering” Poland, Czcęstochowa, 21–23 Sept, pp 260–265. (in Polish)Google Scholar
  7. 7.
    Grzegorek M (submitted) Decomposition of a medical image by a new tool based on grade multivariate methodologyGoogle Scholar
  8. 8.
    Gonzalez RC, Woods RE (2002) Digital Image Processing. Second Edition. Upper Saddle River, Prentice HallGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Maria Grzegorek
    • 1
  1. 1.Institute of Computer SciencePolish Academy of SciencesWarsaw

Personalised recommendations