Acta Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(1), 9-14 | DOI: 10.11118/actaun201159010009

Contour determination and shape characteristics of different varieties of potato tubers

Aneta Bubeníčková, Jana Simeonovová
Ústav technologie potravin, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

Precise determination of potato tubers' shape and variability existing among individual potato varieties is necessary e.g. for modeling of handling and transport processes. The procedures described in the work are used for determination and evaluation of potato tubers shape variability and proportional importance of four main principal components. Ten different potato varieties were analyzed (Karin, Karlena, Krasa, Marilyn, Princess, Red Anna, Rosara, Sazava, Vendula, and Vera) and elliptic Fourier descriptors employed for description of tubers shape. Following principal components were quantified: height to width ratio, position of the center of gravity, curvature, and degree of roundness. The scores of the resulting components were used in subsequent analysis as tuber shape characteristic. The first four principal components covered almost 100 % of the total variance in both, front and side-view shape and 97 % in top-view shape. Height to width ratio was evaluated as the determining parameter with contribution of 70.58-74.02 % of the total shape variation (front-view) for Karin and Vendula varieties respectively. The other principal components were significantly less affecting the overall variability. It was confirmed that described approach is precise and usable procedure for potato tubers shape analysis.

Keywords: shape classification, potato tubers, image analysis, Fourier descriptors
Grants and funding:

The research has been supported by the IGA 234/2101/SP2100321 and Grant Agency of the Czech Academy of Sciences under Contract No. IAA201990701.

Received: August 12, 2010; Published: July 10, 2014  Show citation

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Bubeníčková, A., & Simeonovová, J. (2011). Contour determination and shape characteristics of different varieties of potato tubers. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 59(1), 9-14. doi: 10.11118/actaun201159010009
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