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Search: L773:9781457708411

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1.
  • Dražić, Slobodan, et al. (author)
  • Precise Estimation of the Projection of a Shape from a Pixel Coverage Representation
  • 2011
  • In: Proceedings of the 7th IEEE International Symposium on Image and Signal Processing and Analysis (ISPA). - : IEEE Computer Society. - 9781457708411 ; , s. 569-574, s. 569-574
  • Conference paper (peer-reviewed)abstract
    • Measuring width and diameter of a shape areproblems well studied in the literature. A pixel coverage repre-sentation is one specific type of digital fuzzy representation of acontinuous image object, where the (membership) value of eachpixel is (approximately) equal to the relative area of the pixelwhich is covered by the continuous object. Lately a number ofmethods for shape analysis use pixel coverage for reducing errorof estimation. We introduce a novel method for estimating theprojection of a shape in a given direction. The method is based onutilizing pixel coverage representation of a shape. Performance ofthe method is evaluated by a number of tests on synthetic objects,confirming high precision and applicability for calculation ofdiameter and elongation of a shape.
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2.
  • Strand, Robin, 1978-, et al. (author)
  • A weighted neighbourhood sequence distance function with three local steps
  • 2011
  • In: Proceedings of Image and Signal Processing and Analysis (ISPA), 2011 7th International Symposium on. - : IEEE Computer Society. - 9781457708411 ; , s. 564-568
  • Conference paper (peer-reviewed)abstract
    • We present a combined weighted neighborhood sequence distance function on the square grid with three types of steps. For this general distance function, we compute parameters that optimize an error function for the asymptotic shape of digital disks. We also analyze approximations of the parameters that can be used in the digital grid used here. An algorithm that can be used for image processing applications is also presented.
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  • Result 1-2 of 2
Type of publication
conference paper (2)
Type of content
peer-reviewed (2)
Author/Editor
Strand, Robin, 1978- (1)
Lindblad, Joakim (1)
Sladoje, Nataša (1)
Drazic, Slobodan (1)
Nagy, Benedek, 1973- (1)
University
Uppsala University (2)
Swedish University of Agricultural Sciences (1)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2011 (2)

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