| 1. |
- Curic, Vladimir, 1981-, et al.
(author)
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The Sum of minimal distances as a useful distance measure for image registration
- 2010
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In: Proceedings SSBA 2010. - Uppsala : Centre for Image Analysis. ; , s. 55-58
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Conference paper (other academic/artistic)abstract
- In this paper we study set distances which are used in image registration related problems. We introduced a new distance as a Sum of minimal distances with added linear weights. Linear weights are added in a way to reduce the impact of single outliers. An evaluation of observed distances with respect to applicability to image object registration is performed. A comparative study of set distances with respect to noise sensitivity as well as with respect to translation and rotation of objects in image is presented. Based on our experiments on synthetic images containing various types of noise, we determine that the proposed weighted sum of minimal distances has a good performances for object registration.
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| 2. |
- Gavrilovic, Milan, 1981-, et al.
(author)
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Dimensionality Reduction for Colour Based Pixel Classification
- 2009
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In: Proceedings SSBA 2009. - Halmstad : Halmstad University. - 9789163339240 ; , s. 65-68
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Conference paper (other academic/artistic)abstract
- In digital images, providing classification based on colour, hue or spectral angle is a problem usually solved by combining a variety of pre-processing steps, as well as object wise classifiers. We have developed a method for transforming colour or multispectral image data to a 1D colour histogram with respect to the digital characteristics of intensity measurements. Classification is then reduced to 1D histogram segmentation which is a simpler problem. The proposed method, based on ideas of spectral decomposition, was previously applied in dual-colour fluorescence microscopy for quantification and detection of colocalization insensitive to cross-talk. In this paper the principle is expanded to unsupervised colour based pixel classification algorithms in hue-saturation-lightness or luminance-chrominance colour spaces.
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| 3. |
- Lindblad, Joakim, 1973-, et al.
(author)
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Improved Quantification of Bone Remodelling by Utilizing Fuzzy Based Segmentation
- 2009
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In: Image Analysis. - Berlin : Springer Verlag. - 9783642022296 ; 5575, s. 750-759
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Conference paper (peer-reviewed)abstract
- We present a novel fuzzy theory based method for the segmentation of images required in histomorphometrical investigations of bone implant integration. The suggested method combines discriminant analysis classification controlled by an introduced uncertainty measure, and fuzzy connectedness segmentation method, so that the former is used for automatic seeding of the later. A thorough evaluation of the proposed segmentation method is performed. Comparison with previously published automatically obtained measurements, as well as with manually obtained ones, is presented. The proposed method improves the segmentation and, consequently, the accuracy of the automatic measurements, while keeping advantages with respect to the manual ones, by being fast, repeatable, and objective.
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| 4. |
- Norell, Kristin, 1980-, et al.
(author)
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The polar distance transform
- 2008
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In: Proceedings SSBA 2008, Symposium on image analysis, Lund.
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Conference paper (other academic/artistic)abstract
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