Szukana fraza: [Abstract = "The first stage of the method includes the transformation of a scanned RGB image into the HCI \(Hue\-Chroma\-Intensity\) colour space and then local thresholding of the chroma component to extract a binary root image. Possible chromatic discolourations, different from background colour, are added to the roots from blue or red chroma subcomponent images after thresholding. At the second stage, dark discolourations are extracted by local fuzzy c\-means clustering of an HCI intensity image within the binary root mask."]

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