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The paper is focused to the region segmentation, which will be unsupervised and reached in one step. That is: the algorithm has to grow the regions in the characteristics space at the same time it makes the segmentation (clusters) and only one opportunity is available. Moreover, the algorithm uses its position in the image. Every pixel in the image is checked only once. The system has two different blocks: (1) Initialization of a region; (2) growing all regions together. As we want one iteration unsupervised algorithm, we must have several options in each algorithm step. Moreover, we implement a multi-region growing system to check every pixel once in the image. Our work develops a quasi-optimal solution to an unsupervised one step algorithm based on multi-region growing. Some algorithm details are explained below.
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Xavier Jove-Boix, Francesc Tarres-Ruiz, Eva Fresco, "Fuzzy logic for multiregion growing," Proc. SPIE 3527, Multimedia Storage and Archiving Systems III, (5 October 1998); https://doi.org/10.1117/12.325846