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A Novel Method for Splitting Clumps of Convex Objects Incorporating Image Intensity and Using Rectangular Window-Based Concavity Point-Pair Search

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Original languageEnglish
Pages (from-to)741-751
Number of pages11
JournalPattern Recognition
Issue number3
Publication statusPublished - 2013
Publication typeA1 Journal article-refereed


A novel nonparametric concavity point analysis-based method for splitting clumps of convex objects in binary images is presented. The method is based on finding concavity point-pairs by using a variable-size rectangular window. The concavity point-pairs can be either connected with a straight split line or with a line that follows a path of minimum or maximum intensity on an accompanying grayscale image. Using straight lines can result in non-smooth contours. Therefore, post-processing steps that remove acute angles between split lines are proposed. Results obtained with images that have clumps of biological cells show that the method gives accurate results.

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