Abstract
In the framework of variety testing, evaluation of the flower of Begonia x tuberhybrida Voss. is done by experts. The colours of the flowers are compared with the RHS colour chart. For each flower colour a code is given. This method has several disadvantages (data cannot be statistically analyzed with standard ANOVA techniques, bias by the expert is possible, difficult measurement depending on the light environment, ...) that can be overcome with image analysis. In this study several parameters were tested to distinguish the different varieties. Varieties were split in different colour groups (white, red and yellow–orange) and parameters were analyzed. Parameters based on the green colour plain of the RGB colour space resulted in the largest discriminating power. Parameters based on the HSV colour space performed less well.
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Acknowledgements
The authors thank Luc Van Gyseghem and Christian Hendrickx for the cultivation and maintenance of the plants, Laurent Gevaert for the help with photography and for making time for practical discussions, and Frank Lunn for the linguistic corrections. The authors are very grateful to ir. Camille Vanslembrouck (Intellectual Property Office) for her support and for discussing various problem. This research was funded by the Intellectual Property Office of the Belgian Federal Public Service Economy, SMEs, Self-employed and Energy.
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Lootens, P., Van Waes, J. & Carlier, L. Evaluation of the tepal colour of Begonia x tuberhybrida Voss. for DUS testing using image analysis. Euphytica 155, 135–142 (2007). https://doi.org/10.1007/s10681-006-9315-0
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DOI: https://doi.org/10.1007/s10681-006-9315-0