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1 Technical Sciences / University of Warmia and Mazury in Olsztyn

1 2019

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Identification of representative segment of root for colour determination of carrot

Jaros Małgorzata, Słowik Mateusz, Golisz Ewa, Janaszek-Mańkowska Monika

Technical Sciences / University of Warmia and Mazury in Olsztyn

2019

nr 22(2)

109--118

The aim of the work was to verify hypothesis that colour of longitudinal section of carrot root may be represented by a selected segment of root or a cross-section. An image analysis was based on image data obtained for longitudinal sections of carrot roots using flatbed scanner and graphics editing software. Colour images were acquired into sRGB colour space and converted to CIE Lab. Sixteen segments of equal height were separated over whole length of root image. The colour difference metric was determined to present how colour of each segment differs from the mean colour of whole root. The root section was considered to be representative for whole root if colour difference metric was the least. The analysis of results confirmed a research hypothesis and allowed for finding representative section which was located at 10⁄16 of total root length measuring from the carrot root head.