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Expertomica Fishgui: comparison of fish skin colour
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SYSNO ASEP 0424486 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Expertomica Fishgui: comparison of fish skin colour Author(s) Urban, J. (CZ)
Štys, D. (CZ)
Sergejevova, Magda (MBU-M)
Masojídek, Jiří (MBU-M) RID, ORCIDSource Title Journal of Applied Ichthyology. - : Wiley - ISSN 0175-8659
Roč. 29, č. 1 (2013), s. 172-180Number of pages 9 s. Language eng - English Country DE - Germany Keywords CARASSIUS-AURATUS ; IMAGE-ANALYSIS ; DIETARY SUPPLEMENTATION Subject RIV EE - Microbiology, Virology R&D Projects GA521/09/0656 GA ČR - Czech Science Foundation (CSF) Institutional support MBU-M - RVO:61388971 UT WOS 000313553400023 DOI 10.1111/jai.12011 Annotation The colour hue and saturation of the fish skin are important factors in fish breeding, reflecting the momentary physiological status of the fish. Algorithms evaluating fish colour were created in the MATLAB environment and compiled in the stand-alone application, Expertomica Fishgui. Fish groups fed on several diets (varying in carotenoid supplements) were compared as concerns image analysis methods on colour changes. Images were processed and evaluated to locate body positions, areas and colour saturation. Conversion from the Red-Green-Blue (RGB) colour space to chromatic colours was carried out to reduce the colour space. The threshold of skin chromatic colour was set on basis of the chromatic histograms using Otsu automatic bimodal segmentation. The average colour was calculated through all pixels of the selected area in the original image and through all images of the group. Colour conversion to the Hue-Saturation-Value (HSV) colour space was also carried out. Relative deviation between the saturation of samples in the control and the experimental groups provided a means of judgement. The dominant wavelength was also determined Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2014
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