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In this paper, a novel fully automatic method of extraction of lung parenchyma is presented. Combining the iterative gray-level thresholds selection and the pulmonary regions extraction with error detection in 2D image, seed points and threshold are fast determined. In consequence, the pulmonary airspace is detected with 3D region growing method. Two steps airways segmentation with additional shape...
Shape representation is a very important issue in computer vision and pattern recognition. This paper presents a novel shape representation algorithm based on equilateral polygonal approximation. Firstly, the problem and definition of equilateral polygonal approximation are presented in this paper. Then a new equilateral polygonal approximation method based on detecting optimal edge length using genetic...
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